UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549   FORM 10-K   (Mark One) ☒
ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 or  ☐
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from
 to 333-207132-13 (Commission File Number of issuing entity) 0001713393 (Central Index Key Number of issuing entity) Citigroup Commercial Mortgage Trust 2017-B1 (Exact name of issuing entity as specified in its charter) 333-207132 (Commission File Number of depositor) 0001258361 (Central
Index Key Number of depositor) Citigroup Commercial Mortgage Securities Inc. (Exact name of depositor as specified in its charter) Citi Real Estate Funding Inc. (Central Index Key Number: 0001701238) Morgan Stanley Mortgage Capital Holdings LLC (Central Index Key Number: 0001541557) Bank of America, National Association (Central Index Key Number: 0001102113) Citigroup Global Markets Realty Corp. (Central Index Key Number: 0001541001) (Exact name of sponsor as specified in its charter)  New York

82-2624993
82-2680021
82-6550935(State or other jurisdiction of
organization of the issuing entity)

(I.R.S. Employer
Identification No.) c/o Citibank, N.A. 388 Greenwich Street, 14th Floor New York, New York 10013 (Address of principal executive offices of issuing entity) (212) 816-5614 Registrants telephone number, including area code Securities registered pursuant to Section 12(b) of the Act: None Securities registered pursuant to section 12(g) of the Act: None   Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities
Act.    ☐  Yes    ☒  No Indicate by check mark if the registrant is not required
to file reports pursuant to Section 13 or Section 15(d) of the Act.    ☐  Yes    ☒  No Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act
of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90
days.    ☒  Yes    ☐  No Indicate by check mark whether the registrant has
submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period
that the registrant was required to submit such files). Not Applicable Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405 of
this chapter) is not contained herein, and will not be contained, to the best of registrants knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form
10-K or any amendment to this Form 10-K. Not Applicable Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a
non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of large accelerated filer, accelerated filer, smaller reporting
company, and emerging growth company in Rule 12b-2 of the Exchange Act.   Large accelerated filer

☐

Accelerated filer

☐Non-accelerated filer

☒  (Do not check if a smaller reporting company)

Smaller reporting company

☐Emerging growth company

☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period
for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.    ☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the
Act).    ☐  Yes    ☒  No State the aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common
equity, as of the last business day of the registrants most recently completed second fiscal quarter. Not Applicable Indicate by check mark whether the registrant has filed all documents and reports required to be filed by Section 12, 13 or 15(d) of the Securities
Exchange Act of 1934 subsequent to the distribution of securities under a plan confirmed by a court. Not Applicable Indicate the number of shares outstanding of each of the registrants classes of common stock, as of the latest practicable date. Not Applicable




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DOCUMENTS INCORPORATED BY REFERENCE List hereunder the following documents if incorporated by reference and the Part of the Form 10-K (e.g., Part I, Part
II, etc.) into which the document is incorporated: (1) Any annual report to security holders; (2) Any proxy or information statement; and (3) Any prospectus filed pursuant to Rule 424(b) or (c) under the Securities Act of 1933.
The listed documents should be clearly described for identification purposes (e.g., annual report to security holders for fiscal year ended December 24, 1980). Not Applicable. PART I Item 1. Business. Omitted. Item 1A. Risk Factors. Omitted. Item 1B. Unresolved Staff Comments. None. Item 2. Properties. Omitted. Item 3. Legal Proceedings. Omitted. Item 4. Mine Safety Disclosures. Not applicable. PART II Item 5. Market for
Registrants Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities. Omitted. Item 6. Selected Financial Data. Omitted. Item 7. Managements Discussion and Analysis of Financial Condition and Results of Operations. Omitted.




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Item 7A. Quantitative and Qualitative Disclosures About Market Risk. Omitted. Item 8. Financial Statements and Supplementary
Data. Omitted. Item 9. Changes in and Disagreements
With Accountants on Accounting and Financial Disclosure. Omitted. Item 9A. Controls and Procedures. Omitted. Item 9B. Other Information. None. PART III Item 10. Directors,
Executive Officers and Corporate Governance. Omitted. Item 11. Executive Compensation. Omitted. Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters. Omitted. Item 13. Certain Relationships and Related
Transactions, and Director Independence. Omitted. Item 14. Principal Accounting Fees and Services. Omitted. ADDITIONAL DISCLOSURE ITEMS REQUIRED
BY GENERAL INSTRUCTION J(2) Item 1112(b) of Regulation AB No mortgage loan in the pool assets for Citigroup Commercial Mortgage Trust 2017-B1 constitutes a significant obligor
within the meaning of Item 1101(k)(2) of Regulation AB. Item 1114(b)(2) and Item 1115(b) of Regulation AB No entity or group of affiliated entities provides any external credit enhancement, uses any derivative instruments or other support for the certificates
within this transaction. Item 1117 of Regulation AB Disclosure from Citibank, N.A., as Certificate Administrator:




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On June 18, 2014, a civil action was filed against Citibank in the Supreme Court of the State of New
York by a group of investors in 48 private-label RMBS trusts for which Citibank allegedly serves or did serve as trustee, asserting claims for purported violations of the Trust Indenture Act of 1939 (the Trust Indenture Act), breach of
contract, breach of fiduciary duty and negligence based on Citibanks alleged failure to perform its duties as trustee for the 48 RMBS trusts. On November 24, 2014, plaintiffs sought leave to withdraw this action. On the same day, a
smaller subset of similar plaintiff investors in 27 private-label RMBS trusts for which Citibank allegedly serves or did serve as trustee, filed a new civil action against Citibank in the United States District Court for the Southern District of New
York asserting similar claims as the prior action filed in state court. In January 2015, the court closed plaintiffs original state court action. On September 8, 2015, the federal court dismissed all claims as to 24 of the 27 trusts
and allowed certain of the claims to proceed as to the other three trusts. Subsequently, plaintiffs voluntarily dismissed all claims with respect to two of the three trusts. On April 7, 2017, Citibank filed a motion for summary judgment.
Plaintiffs filed its consolidated opposition brief and cross motion for partial summary judgment on May 22, 2017. Briefing on those motions was completed on August 4, 2017. On March 22, 2018, the court granted Citibanks motion
for summary judgment in its entirety, denied Plaintiffs motion for summary judgment and ordered the clerk to close the case. On April 20, 2018, plaintiffs filed a notice of appeal. Plaintiffs opening brief was filed on
August 3, 2018. Citibank filed its opposition on November 2, 2018. Plaintiffs filed their reply on November 16, 2018. On
November 24, 2015, the same investors that brought the federal case brought a new civil action in the Supreme Court of the State of New York related to 25 private-label RMBS trusts for which Citibank allegedly serves or did serve as trustee.
This case includes the 24 trusts previously dismissed in the federal action, and one additional trust. The investors assert claims for breach of contract, breach of fiduciary duty, breach of duty to avoid conflicts of interest, and violation of New
Yorks Streit Act (the Streit Act). Following oral argument on Citibanks motion to dismiss, plaintiffs filed an amended complaint on August 5, 2016. On June 27, 2017, the state court issued a decision, dismissing the
event of default claims, mortgage-file-related claims, the fiduciary duty claims, and the conflict of interest claims. The decision sustained certain breach of contract claims including the claim alleging discovery of breaches of representations and
warranties, a claim related to robo-signing, and the implied covenant of good faith claim. Citibank appealed the lower courts decision, and on January 16, 2018, the Appellate Division, First Department, dismissed the claims related to
robo-signing and the implied covenant of good faith, but allowed plaintiffs claim alleging discovery of breaches of representations and warranties to proceed. On August 19, 2015, the Federal Deposit Insurance Corporation (FDIC) as receiver for a failed financial institution filed a civil action
against Citibank in the Southern District of New York. This action relates to one private-label RMBS trust for which Citibank formerly served as trustee. FDIC asserts claims for breach of contract, violation of the Streit Act, and violation of the
Trust Indenture Act. Citibank jointly briefed a motion to dismiss with The Bank of New York Mellon and U.S. Bank, N.A., entities that have also been sued by FDIC in their capacity as trustee, and these cases have all been consolidated in front of
Judge Carter. On September 30, 2016, the court granted the motion to dismiss without prejudice for lack of subject matter jurisdiction. On October 14, 2016, FDIC filed a motion for reargument or relief from judgment from the courts
dismissal order. On July 11, 2017, Judge Carter ruled on the motion for reconsideration regarding his dismissal of the action. He denied reconsideration of his decision on standing, but granted leave to amend the complaint by October 9,
2017. The FDIC subsequently requested an extension of time to file its amended complaint, which was granted. The FDIC filed its amended complaint on December 8, 2017. Defendants jointly filed a motion to dismiss the amended complaint on
March 13, 2018. On April 18, 2018, plaintiff filed its opposition. Defendants filed their joint reply on May 3, 2018. There can be no
assurances as to the outcome of litigation or the possible impact of litigation on the trustee or the RMBS trusts. However, Citibank denies liability and continues to vigorously defend against these litigations. Furthermore, neither the
above-disclosed litigations nor any other pending legal proceeding involving Citibank will materially affect Citibanks ability to perform its duties as Certificate Administrator under the pooling and servicing agreement for this CMBS
transaction. Disclosure from Deutsche Bank Trust Company Americas, as Trustee: Deutsche Bank Trust Company Americas (DBTCA) and Deutsche Bank National Trust Company (DBNTC) have been sued by investors in civil
litigation concerning their role as trustees of certain residential mortgage-backed securities (RMBS) trusts. On June 18, 2014, a group of
investors, including funds managed by Blackrock Advisors, LLC, PIMCO-Advisors, L.P., and others, filed an action against DBNTC and DBTCA in New York State Supreme Court alleging that DBNTC and DBTCA failed to perform purported duties, as trustees
for 544 private-label RMBS trusts, to enforce breaches of representations and warranties as to mortgage loans held by the trusts and to enforce breaches by servicers of their mortgage loan servicing obligations for the trusts. During the course of
the litigation, plaintiffs dismissed the case from New York State Supreme Court and refiled two separate cases, one in the




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U.S. District Court for the Southern District of New York (the BlackRockSDNY Case) and the other in the Superior Court of California, Orange County (the BlackRockCalifornia Case). Pursuant to a settlement among the parties, the BlackRockSDNY Case was dismissed on December 6, 2018 and the BlackRockCalifornia Case was dismissed on January 11, 2019. On September 27, 2017, DBTCA was added as a defendant to a case brought by certain special purpose entities including Phoenix Light SF Limited in the U.S.
District Court for the Southern District of New York, in which the plaintiffs previously alleged incorrectly that DBNTC served as trustee for all 43 of the trusts at issue. On September 27, 2017, plaintiffs filed a third amended complaint that names
DBTCA as a defendant in addition to DBNTC. DBTCA serves as trustee for one of the 43 trusts at issue. DBNTC serves as trustee for the other 42 trusts at issue. Plaintiffs third amended complaint brings claims for violation of the U.S. Trust
Indenture Act of 1939 (TIA); breach of contract; breach of fiduciary duty; negligence and gross negligence; violation of New Yorks Streit Act (the Streit Act); and breach of the covenant of good faith. However, in the
third amended complaint, plaintiffs acknowledge that, before DBTCA was added to the case, the court dismissed plaintiffs TIA Act claims, negligence and gross negligence claims, Streit Act claims, claims for breach of the covenant of good
faith, and certain theories of plaintiffs breach of contract claims, and plaintiffs only include these claims to preserve any rights on appeal. Plaintiffs allege damages of hundreds of millions of dollars. On November 13, 2017,
DBNTC and DBTCA filed an answer to the third amended complaint. On December 7, 2018, DBNTC and DBTCA filed a motion for summary judgment. Also on December 7, 2018, plaintiffs, jointly with Commerzbank AG (see description of Commerzbank
case below), filed a motion for partial summary judgment. On November 30, 2017, DBTCA was added as a defendant to a case brought by Commerzbank AG
(Commerzbank) in the U.S. District Court for the Southern District of New York, in which Commerzbank previously alleged incorrectly that DBNTC served as trustee for all 50 of the trusts at issue. On November 30, 2017, Commerzbank filed a
second amended complaint that names DBTCA as a defendant in addition to DBNTC. DBTCA serves as trustee for one of the 50 trusts at issue. DBNTC serves as trustee for the other 49 trusts at issue. Commerzbanks second amended complaint brings
claims for violation of the TIA; breach of contract; breach of fiduciary duty; negligence; violation of the Streit Act; and breach of the covenant of good faith. However, in the second amended complaint, Commerzbank acknowledges that, before DBTCA
was added to the case, the court dismissed Commerzbanks TIA claims for the trusts governed by pooling and servicing agreements, as well as its Streit Act claims and claims for breach of the covenant of good faith, and Commerzbank only includes
these claims to preserve any rights on appeal. The second amended complaint alleges that DBNTC and DBTCA caused Commerzbank to suffer hundreds of millions of dollars in losses, but the complaint does not include a demand for money
damages in a sum certain. On January 29, 2018, DBNTC and DBTCA filed an answer to the second amended complaint. On December 7, 2018, DBNTC and DBTCA filed a motion for summary judgment. Also on December 7, 2018, Commerzbank, jointly with the
Phoenix Lightplaintiffs, filed a motion for partial summary judgment. On December 30, 2015, IKB International, S.A. in Liquidation and IKB
Deutsche Industriebank A.G. (collectively, IKB), as an investor in 37 RMBS trusts, filed a summons with notice in the Supreme Court of the State of New York, New York County, against DBNTC and DBTCA as trustees of the trusts. On May 27,
2016, IKB served its complaint asserting claims for breach of contract, breach of fiduciary duty, breach of duty to avoid conflicts of interest, violation of the Streit Act, violation of the TIA, violation of Regulation AB, and violation of Section
9 of the Uniform Commercial Code. IKB alleges that DBNTC and DBTCA are liable for over U.S. $268 million in damages. On October 5, 2016, DBNTC and DBTCA, together with several other trustees defending lawsuits by IKB, filed a joint motion to
dismiss. On January 6, 2017 and June 20, 2017, IKB voluntarily dismissed with prejudice all claims as to seven trusts. As of March 1, 2019, DBNTC and DBTCAs motion to dismiss has been briefed and is awaiting decision by the court. It is DBTCAs belief that it has no pending legal proceedings (including, based on DBTCAs present evaluation, the litigation disclosed in the
foregoing paragraphs) that would materially affect its ability to perform its duties under the related servicing agreement for this transaction. Disclosure from Wells Fargo Bank, National Association, as certificate administrator and as custodian for the General Motors Building mortgage loan under the
BXP 2017-GM TSA, the Del Amo Fashion Center mortgage loan under the DAFC 2017-AMO TSA and the Crossgates Commons mortgage loan under the BANK 2017-BNK5 PSA: Since June 18, 2014, a group of institutional investors have filed civil complaints in the Supreme Court of the State of New York, New York County, and later
the U.S. District Court for the Southern District of New York against Wells Fargo Bank, N.A., (Wells Fargo Bank) in its capacity as trustee for certain residential mortgage backed securities (RMBS) trusts. The complaints
against Wells Fargo Bank alleged that the trustee caused losses to investors and asserted causes of action based upon, among other things, the trustees alleged failure to: (i) notify and enforce repurchase obligations of mortgage loan sellers
for purported breaches of representations and warranties, (ii) notify investors of alleged events of default, and (iii) abide by appropriate standards of care following alleged events of default. Relief sought included money damages in an
unspecified amount, reimbursement of expenses, and equitable relief. Wells Fargo Bank has reached an agreement, in which it denies any wrongdoing, to resolve these claims on a classwide basis for the 271 RMBS trusts currently at issue. The
settlement agreement is subject to court approval. Separate lawsuits against Wells Fargo Bank making similar allegations filed by certain other institutional investors concerning 57 RMBS trusts in New York federal and state court are not covered by
the agreement. With respect to the foregoing litigations, Wells Fargo Bank believes plaintiffs claims are without merit and intends to contest the claims vigorously, but there can be no assurances as to the outcome of the litigations or the
possible impact of the litigations on Wells Fargo Bank or the RMBS trusts.




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Item 1119 of Regulation AB Provided previously in the prospectus of the Registrant relating to the issuing entity and filed on August 29, 2017 pursuant to Rule 424(b)(2) of the
Securities Act of 1933, as amended. Item 1122 of Regulation AB The reports on assessment of compliance with servicing criteria for asset-backed securities and related attestation reports are attached hereto under Item 15. Item 1123 of Regulation AB The servicer
compliance statements are attached hereto under Item 15. PART IV Item 15. Exhibits, Financial Statement Schedules.  (a)
List the following documents filed as a part of the report:  (1)
Not Applicable  (2)
Not Applicable  (3)
Exhibits listed below are either included or incorporated by reference as indicated below:  Exhibit
Number

Description4.1

Pooling and Servicing Agreement, dated as of August 
1, 2017, by and among Citigroup Commercial Mortgage Securities Inc., as depositor, Wells Fargo Bank, National Association, as master servicer, LNR Partners, LLC, as special servicer, Trimont Real Estate Advisors, LLC, as operating advisor and asset representations
 reviewer, Citibank, N.A., as certificate administrator, and Deutsche Bank Trust Company Americas, as trustee (filed as Exhibit 4.1 to the registrants Current Report on Form 8-K dated August 29,
2017, and filed by the registrant on August 29, 2017 under Commission File No. 333-207132-13, and is incorporated by reference herein).4.2

Trust and Servicing Agreement, dated as of June 
9, 2017 (the BXP 2017-GM TSA), by and among Morgan Stanley Capital I Inc., as depositor, Wells Fargo Bank, National Association, as servicer, AEGON USA Realty Advisors, LLC, as special servicer, Wells
 Fargo Bank, National Association, as certificate administrator and custodian, and Wilmington Trust, National Association, as trustee (filed as Exhibit 4.2 to the registrants Current Report on Form 8-K
dated August 29, 2017, and filed by the registrant on August 29, 2017 under Commission File No. 333-207132-13, and is incorporated by reference herein)1.  1
The General Motors Building mortgage loan, which represented approximately 9.8% of the initial pool balance of
the issuing entity, is part of a loan combination comprised of the subject mortgage loan included in the issuing entity and one or more companion loan(s) that are held outside the issuing entity. The General Motors Building mortgage loan
and the related companion loan(s) are serviced pursuant to the BXP 2017-GM TSA.




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4.3

Pooling and Servicing Agreement, dated as of August 
1, 2017 (the CD 2017-CD5 PSA), by and among Citigroup Commercial Mortgage Securities Inc., as depositor, Wells Fargo Bank, National Association, as master servicer, Rialto Capital Advisors, LLC, as special
 servicer, Park Bridge Lender Services LLC, as operating advisor and asset representations reviewer, Citibank, N.A., as certificate administrator, and Wilmington Trust, National Association, as trustee (filed as Exhibit 4.3 to the registrants
Current Report on Form 8-K dated August 29, 2017, and filed by the registrant on August 29, 2017 under Commission File
No. 333-207132-13, and is incorporated by reference herein)2.4.4

Trust and Servicing Agreement, dated as of June 
20, 2017 (the DAFC 2017-AMO TSA), by and among Banc of America Merrill Lynch Large Loan, Inc., as depositor, KeyBank National Association, as servicer, Cohen Financial, a Division of SunTrust Bank, as
 special servicer, Park Bridge Lender Services LLC, as operating advisor, Wells Fargo Bank, National Association, as certificate administrator, and Wilmington Trust, National Association, as trustee (filed as Exhibit 4.4 to the registrants
Current Report on Form 8-K dated August 29, 2017, and filed by the registrant on August 29, 2017 under Commission File
No. 333-207132-13, and is incorporated by reference herein)3.4.5

Pooling and Servicing Agreement, dated as of June 
1, 2017 (the BANK 2017-BNK5 PSA), by and among Morgan Stanley Capital I Inc., as depositor, Wells Fargo Bank, National Association, as general master servicer, CWCapital Asset Management LLC, as general special servicer, National Cooperative
 Bank, N.A., as NCB master servicer and NCB special servicer, Park Bridge Lender Services LLC, as operating advisor and asset representations reviewer, Wells Fargo Bank, National Association, as certificate administrator, and Wilmington Trust,
National Association, as trustee (filed as Exhibit 4.5 to the registrants Current Report on Form 8-K dated August 29, 2017, and filed by the registrant on August 29, 2017 under Commission File No. 333-207132-13, and is incorporated by reference herein)4.31

Rule 15d-14(d) Certification33

Reports on assessment of compliance with servicing criteria for asset-backed securities.533.1

Report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as master servicer33.2

Report on assessment of compliance with servicing criteria for asset-backed securities, LNR Partners, LLC, as special servicer33.3

Report on assessment of compliance with servicing criteria for asset-backed securities, Trimont Real Estate Advisors, LLC, as operating advisor  2
The Brookwood Self Storage LA-MS Portfolio mortgage loan, which represented approximately 4.2% of the initial
pool balance of the issuing entity, is part of a loan combination comprised of the subject mortgage loan included in the issuing entity and one or more companion loan(s) that are held outside the issuing entity. The IGT Reno mortgage loan, which
represented approximately 1.1% of the initial pool balance of the issuing entity, is part of a loan combination comprised of the subject mortgage loan included in the issuing entity and one or more companion loan(s) that are held outside the issuing
entity. The Brookwood Self Storage LA-MS Portfolio mortgage loan, the IGT Reno mortgage loan, and each of the related companion loan(s) are serviced pursuant to the CD 2017-CD5 PSA. 3
The Del Amo Fashion Center mortgage loan, which represented approximately 2.2% of the initial pool balance of
the issuing entity, is part of a loan combination comprised of the subject mortgage loan included in the issuing entity and one or more companion loan(s) that are held outside the issuing entity. The Del Amo Fashion Center mortgage loan and the
related companion loan(s) are serviced pursuant to the DAFC 2017-AMO TSA. 4
The Crossgates Commons mortgage loan, which represented approximately 1.3% of the initial pool balance of the
issuing entity, is part of a loan combination comprised of the subject mortgage loan included in the issuing entity and one or more companion loan(s) that are held outside the issuing entity. The Crossgates Commons mortgage loan and the related
companion loan(s) are serviced pursuant to the BANK 2017-BNK5 PSA. 5
Pursuant to Instruction 3 to Item 1122 of Regulation AB, the reports on assessment of compliance with servicing
criteria and attestation reports on assessment of compliance with servicing criteria of (i) KeyBank National Association, as master servicer for the Del Amo Fashion Center mortgage loan under the DAFC 2017-AMO TSA, (ii) Cohen Financial, a Division
of SunTrust Bank, as special servicer for the Del Amo Fashion Center mortgage loan under the DAFC 2017-AMO TSA, and (iii) CWCapital Asset Management LLC, as general special servicer for the Crossgates Commons mortgage loan under the BANK 2017-BNK5
PSA, are not included in this report on Form 10-K because each of KeyBank National Association, Cohen Financial, a Division of SunTrust Bank and CWCapital Asset Management LLC performed activities that address the servicing criteria specified in
Item 1122(d) of Regulation AB with respect to 5% or less of the pool assets of the issuing entity.




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33.4

Report on assessment of compliance with servicing criteria for asset-backed securities, Citibank, N.A., as certificate administrator33.5

Report on assessment of compliance with servicing criteria for asset-backed securities, Deutsche Bank Trust Company Americas, as custodian33.6

Report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant33.7

Report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant33.8

Report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as servicer for the General Motors Building mortgage loan under the BXP 2017-GM TSA (see Exhibit 33.1)33.9

Report on assessment of compliance with servicing criteria for asset-backed securities, AEGON USA Realty Advisors, LLC, as special servicer for the General Motors Building mortgage loan under the BXP 2017-GM TSA33.10

Report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as certificate administrator for the General Motors Building mortgage loan under
 the BXP 2017-GM TSA33.11

Report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as custodian for the General Motors Building mortgage loan under the BXP 2017-GM TSA33.12

Report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant for the General Motors Building mortgage
 loan under the BXP 2017-GM TSA (see Exhibit 33.6)33.13

Report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant for the General Motors Building mortgage loan under the BXP
 2017-GM TSA (see Exhibit 33.7)33.14

Report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as master servicer for the Brookwood Self Storage LA-MS Portfolio mortgage loan and the IGT Reno mortgage loan under the CD 2017-CD5 PSA (see Exhibit 33.1)33.15

Report on assessment of compliance with servicing criteria for asset-backed securities, Rialto Capital Advisors, LLC, as special servicer for the Brookwood Self Storage LA-MS Portfolio mortgage loan and the IGT Reno mortgage loan under the CD 2017-CD5 PSA33.16

Report on assessment of compliance with servicing criteria for asset-backed securities, Park Bridge Lender Services LLC, as operating advisor for the Brookwood Self Storage LA-MS Portfolio mortgage loan and the IGT Reno mortgage loan under the CD 2017-CD5 PSA33.17

Report on assessment of compliance with servicing criteria for asset-backed securities, Citibank, N.A., as certificate administrator for the Brookwood Self Storage LA-MS Portfolio
 mortgage loan and the IGT Reno mortgage loan under the CD 2017-CD5 PSA (see Exhibit 33.4)33.18

Report on assessment of compliance with servicing criteria for asset-backed securities, U.S. Bank National Association, as servicing function participant for the Brookwood Self Storage LA-MS Portfolio mortgage loan and the IGT Reno mortgage loan under the CD 2017-CD5 PSA




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33.19

Report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant for the Brookwood Self Storage LA-MS Portfolio mortgage loan and the IGT Reno mortgage loan under the CD 2017-CD5 PSA (see Exhibit 33.6)33.20

Report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant for the Brookwood Self Storage LA-MS Portfolio mortgage loan and the IGT Reno mortgage loan under the CD 2017-CD5 PSA (see Exhibit 33.7)33.21

Report on assessment of compliance with servicing criteria for asset-backed securities, Park Bridge Lender Services, LLC, as operating advisor for the Del Amo Fashion Center mortgage loan under the DAFC 2017-AMO TSA (see Exhibit 33.16)33.22

Report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as certificate administrator for the Del Amo Fashion Center mortgage loan under
 the DAFC 2017-AMO TSA (see Exhibit 33.10)33.23

Report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as custodian for the Del Amo Fashion Center mortgage loan under the DAFC 2017-AMO TSA (see Exhibit 33.11)33.24

Report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as general master servicer for the Crossgates Commons mortgage loan under the BANK
 2017-BNK5 PSA (see Exhibit 33.1)33.25

Report on assessment of compliance with servicing criteria for asset-backed securities, Park Bridge Lender Services LLC, as operating advisor for the Crossgates Commons mortgage loan under the BANK 2017-BNK5
 PSA (see Exhibit 33.16)33.26

Report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as certificate administrator for the Crossgates Commons mortgage loan under the
BANK 2017-BNK5 PSA (see Exhibit 33.10)33.27

Report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as custodian for the Crossgates Commons mortgage loan under the BANK 2017-BNK5
 PSA (see Exhibit 33.11)33.28

Report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant for the Crossgates Commons mortgage
 loan under the BANK 2017-BNK5 PSA (see Exhibit 33.6)33.29

Report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant for the Crossgates Commons mortgage loan under the BANK 2017-BNK5
 PSA (see Exhibit 33.7)34

Attestation reports on assessment of compliance with servicing criteria for asset-backed securities.34.1

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as master servicer34.2

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, LNR Partners, LLC, as special servicer34.3

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Trimont Real Estate Advisors, LLC, as operating advisor




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34.4

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Citibank, N.A., as certificate administrator34.5

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Deutsche Bank Trust Company Americas, as custodian34.6

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant34.7

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant34.8

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as servicer for the General Motors Building mortgage loan under the
 BXP 2017-GM TSA (see Exhibit 34.1)34.9

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, AEGON USA Realty Advisors, LLC, as special servicer for the General Motors Building mortgage loan under the
 BXP 2017-GM TSA34.10

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as certificate administrator for the General Motors Building mortgage
 loan under the BXP 2017-GM TSA34.11

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as custodian for the General Motors Building mortgage loan under the
 BXP 2017-GM TSA34.12

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant for the General Motors Building
 mortgage loan under the BXP 2017-GM TSA (see Exhibit 34.6)34.13

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant for the General Motors Building mortgage loan under
 the BXP 2017-GM TSA (see Exhibit 34.7)34.14

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as master servicer for the Brookwood Self Storage LA-MS Portfolio mortgage loan and the IGT Reno mortgage loan under the CD 2017-CD5 PSA (see Exhibit 34.1)34.15

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Rialto Capital Advisors, LLC, as special servicer for the Brookwood Self Storage LA-MS Portfolio mortgage loan and the IGT Reno mortgage loan under the CD 2017-CD5 PSA34.16

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Park Bridge Lender Services LLC, as operating advisor for the Brookwood Self Storage LA-MS Portfolio mortgage loan and the IGT Reno mortgage loan under the CD 2017-CD5 PSA34.17

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Citibank, N.A., as certificate administrator for the Brookwood Self Storage LA-MS Portfolio mortgage loan and the IGT Reno mortgage loan under the CD 2017-CD5 PSA (see Exhibit 34.4)34.18

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, U.S. Bank National Association, as servicing function participant for the Brookwood Self Storage LA-MS Portfolio mortgage loan and the IGT Reno mortgage loan under the CD 2017-CD5 PSA




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34.19

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant for the Brookwood Self Storage
 LA-MS Portfolio mortgage loan and the IGT Reno mortgage loan under the CD 2017-CD5 PSA (see Exhibit 34.6)34.20

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant for the Brookwood Self Storage LA-MS Portfolio mortgage loan and the IGT Reno mortgage loan under the CD 2017-CD5 PSA (see Exhibit 34.7)34.21

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Park Bridge Lender Services, LLC, as operating advisor for the Del Amo Fashion Center mortgage loan under
 the DAFC 2017-AMO TSA (see Exhibit 34.16)34.22

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as certificate administrator for the Del Amo Fashion Center mortgage
 loan under the DAFC 2017-AMO TSA (see Exhibit 34.10)34.23

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as custodian for the Del Amo Fashion Center mortgage loan under the
DAFC 2017-AMO TSA (see Exhibit 34.11)34.24

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as general master servicer for the Crossgates Commons mortgage loan
 under the BANK 2017-BNK5 PSA (see Exhibit 34.1)34.25

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Park Bridge Lender Services LLC, as operating advisor for the Crossgates Commons mortgage loan under the BANK
 2017-BNK5 PSA (see Exhibit 34.16)34.26

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as certificate administrator for the Crossgates Commons mortgage loan
 under the BANK 2017-BNK5 PSA (see Exhibit 34.10)34.27

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as custodian for the Crossgates Commons mortgage loan under the BANK
2017-BNK5 PSA (see Exhibit 34.11)34.28

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant for the Crossgates Commons
 mortgage loan under the BANK 2017-BNK5 PSA (see Exhibit 34.6)34.29

Attestation report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant for the Crossgates Commons mortgage loan under
 the BANK 2017-BNK5 PSA (see Exhibit 34.7)35

Servicer compliance statements.635.1

Servicer compliance statement, Wells Fargo Bank, National Association, as master servicer35.2

Servicer compliance statement, LNR Partners, LLC, as special servicer35.3

Servicer compliance statement, Citibank, N.A., as certificate administrator35.4

Servicer compliance statement, Wells Fargo Bank, National Association, as servicer for the General Motors Building mortgage loan under the BXP 2017-GM TSA35.5

Servicer compliance statement, Wells Fargo Bank, National Association, as certificate administrator for the General Motors Building mortgage loan under the BXP 2017-GM TSA    6
This annual report on Form 10-K does not include the servicer compliance statements of (i) AEGON USA Realty
Advisors, LLC, as special servicer for the General Motors Building mortgage loan under the BXP 2017-GM TSA, (ii) Rialto Capital Advisors, LLC, as special servicer for the Brookwood Self Storage LA-MS Portfolio mortgage loan and the IGT Reno mortgage
loan under the CD 2017-CD5 PSA, (iii) KeyBank National Association, as master servicer for the Del Amo Fashion Center mortgage loan under the DAFC 2017-AMO TSA, (iv) Cohen Financial, a Division of SunTrust Bank, as special servicer for the Del Amo
Fashion Center mortgage loan under the DAFC 2017-AMO TSA, and (v) CWCapital Asset Management LLC, as general special servicer for the Crossgates Commons mortgage loan under the BANK 2017-BNK5 PSA, because each of AEGON USA Realty Advisors, LLC,
Rialto Capital Advisors, LLC, KeyBank National Association, Cohen Financial, a Division of SunTrust Bank and CWCapital Asset Management LLC is an unaffiliated party that services less than 10% of the pool assets of the issuing entity, and therefore
is not a servicer that meets the criteria in Item 1108(a)(2)(i) through (iii) of Regulation AB.




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35.6

Servicer compliance statement, Wells Fargo Bank, National Association, as master servicer for the Brookwood Self Storage LA-MS Portfolio mortgage loan and the IGT Reno
 mortgage loan under the CD 2017-CD5 PSA35.7

Servicer compliance statement, Citibank, N.A., as certificate administrator for the Brookwood Self Storage LA-MS Portfolio mortgage loan and the IGT Reno mortgage loan
 under the CD 2017-CD5 PSA (see Exhibit 35.3)35.8

Servicer compliance statement, Wells Fargo Bank, National Association, as certificate administrator for the Del Amo Fashion Center mortgage loan under the DAFC 2017-AMO TSA
 (see Exhibit 35.5)35.9

Servicer compliance statement, Wells Fargo Bank, National Association, as general master servicer for the Crossgates Commons mortgage loan under the BANK 2017-BNK5 PSA35.10

Servicer compliance statement, Wells Fargo Bank, National Association, as certificate administrator for the Crossgates Commons mortgage loan under the BANK 2017-BNK5 PSA (see Exhibit 35.5)99.1

Mortgage Loan Purchase Agreement, dated as of August 
1, 2017, between Citi Real Estate Funding Inc. and Citigroup Commercial Mortgage Securities Inc., pursuant to which Citi Real Estate Funding Inc. sold certain mortgage loans to Citigroup Commercial Mortgage Securities Inc. (filed as Exhibit 99.1 to the
 registrants Current Report on Form 8-K dated August 29, 2017, and filed by the registrant on August 29, 2017 under Commission File No. 333-207132-13, and is incorporated by reference herein).99.2

Mortgage Loan Purchase Agreement, dated as of August 
1, 2017, between Morgan Stanley Mortgage Capital Holdings LLC and Citigroup Commercial Mortgage Securities Inc., pursuant to which Morgan Stanley Mortgage Capital Holdings LLC sold certain mortgage loans to Citigroup Commercial Mortgage Securities Inc.
 (filed as Exhibit 99.2 to the registrants Current Report on Form 8-K dated August 29, 2017, and filed by the registrant on August 29, 2017 under Commission File
No. 333-207132-13, and is incorporated by reference herein).99.3

Mortgage Loan Purchase Agreement, dated as of August 
1, 2017, between Bank of America, National Association and Citigroup Commercial Mortgage Securities Inc., pursuant to which Bank of America, National Association sold certain mortgage loans to Citigroup Commercial Mortgage Securities Inc. (filed as Exhibit
 99.3 to the registrants Current Report on Form 8-K dated August 29, 2017, and filed by the registrant on August 29, 2017 under Commission File No. 333-207132-13, and is incorporated by reference herein).99.4

Mortgage Loan Purchase Agreement, dated as of August 
1, 2017, between Citigroup Global Markets Realty Corp. and Citigroup Commercial Mortgage Securities Inc., pursuant to which Citigroup Global Markets Realty Corp. sold certain mortgage loans to Citigroup Commercial Mortgage Securities Inc. (filed as Exhibit
 99.4 to the registrants Current Report on Form 8-K dated August 29, 2017, and filed by the registrant on August 29, 2017 under Commission File No. 333-207132-13, and is incorporated by reference herein).  (b)
The exhibits required to be filed by Registrant pursuant to Item 601of Regulation S-K are listed above.  (c)
Not Applicable




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SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.  Date: March 29, 2019Citigroup Commercial Mortgage Securities Inc.(Depositor)/s/ Richard SimpsonRichard Simpson, President