PROPERTY CO-TENANCY
                       OWNERSHIP AGREEMENT
                Champps Restaurant - Columbus, OH


THIS CO-TENANCY AGREEMENT,

Made  and  entered  into as of the 24 day of May,  2001,  by  and
between Walter L. Schrock (hereinafter called "Schrock"), and AEI
Real  Estate  Fund XVIII Limited Partnership (hereinafter  called
"Fund XVIII"). Wood, Fund XVIII (and any other Owner in Fee where
the   context   so   indicates)   being   hereinafter   sometimes
collectively  called "Co-Tenants" and referred to in  the  neuter
gender).

WITNESSETH:

WHEREAS,  Fund XVIII presently owns an undivided 5.0132% interest
in  and  to,  and  Schrock presently owns  an  undivided  6.5437%
interest  in and to, and Donald B. Wood and Sue D. Wood presently
owns  an  undivided 5.3418% interest in and to, and Lynn  Bushman
and  Camille Bushman presently owns an undivided 2.6709% interest
in  and to, and Patrick J. Devlin and Dolores A. Devlin presently
owns  an undivided 7.2676% interest in and to, and James  D.  Rea
and  Mary M. Rea presently owns an undivided 6.3701% interest  in
and to, and Tall Pines Farm Limited Partnership presently owns an
undivided 6.4252% interest in and to, and Carlos W. Appleton  and
Mary V. Appleton presently owns an undivided 6.2036% interest  in
and  to,  and  Edward C. Thulin and Virginia L. Thulin  presently
owns  an  undivided 4.9629% interest in and to, and James  Edward
Amend presently owns an undivided 7.0899% interest in and to, and
Ernest  E.  Ainslie  and  Marion B.  Ainslie  presently  owns  an
undivided  8.9900%  interest in and to, and  Richard  Abbott  and
Marjorie  Abbott presently owns an undivided 7.0899% interest  in
and  to, and Calderwood Investments Limited Partnership presently
owns  an  undivided 11.8514% interest in and to,  and  Gerald  E.
Adamson  and  Barbara  J.  Adamson presently  owns  an  undivided
7.0899%  interest in and to, and Wayne K. Adamson presently  owns
an  undivided 7.0899% interest in and to, and the land,  situated
in  the City of Columbus, County of Franklin, and State of  Ohio,
(legally described upon Exhibit A attached hereto and hereby made
a  part  hereof)  and in and to the improvements located  thereon
(hereinafter called "Premises");

WHEREAS,  The  parties  hereto wish to provide  for  the  orderly
operation  and management of the Premises and Schrock's  interest
by  Fund  XVIII;  the  continued  leasing  of  space  within  the
Premises;  for the distribution of income from and  the  pro-rata
sharing in expenses of the Premises.

NOW THEREFORE, in consideration of the purchase by Schrock of  an
undivided  interest  in and to the Premises,  for  at  least  One
Dollar  ($1.00) and other good and valuable consideration by  the
parties  hereto  to  one another in hand paid,  the  receipt  and
sufficiency of which are hereby acknowledged, and of  the  mutual
covenants and agreements herein contained, it is hereby agreed by
and between the parties hereto, as follows:


Co-Tenant Initial:  /s/ WLS
Co-Tenancy Agreement for Champps, Columbus, OH (Crosswoods)



1.    The  operation  and  management of the  Premises  shall  be
delegated  to Fund XVIII, or its designated agent, successors  or
assigns. Provided, however, if Fund XVIII shall sell all  of  its
interest  in  the  Premises, the duties and obligations  of  Fund
XVIII  respecting management of the Premises as set forth herein,
including but not limited to paragraphs 2, 3, and 4 hereof, shall
be  exercised  by  the holder or holders of  a  majority  of  the
undivided   co-tenancy  interest  in  the  Premises.  Except   as
hereinafter  expressly  provided to the  contrary,  each  of  the
parties hereto agrees to be bound by the decisions of Fund  XVIII
with  respect  to all administrative, operational and  management
matters  of  the property comprising the Premises, including  but
not  limited to the management of the net lease agreement for the
Premises. The parties hereto hereby designate Fund XVIII as their
sole and exclusive agent to deal with, and Fund XVIII retains the
sole  right  to  deal with, any property agent or tenant  and  to
negotiate and enter into, on terms and provisions satisfactory to
Fund  XVIII,  and to monitor, execute and enforce  the  terms  of
leases of space within the Premises, including but not limited to
any  amendments,  consents  to assignment,  sublet,  releases  or
modifications  to  leases or guarantees  of  lease  or  easements
affecting  the Premises, on behalf of Schrock. As  long  as  Fund
XVIII  owns  an  interest in the Premises, only  Fund  XVIII  may
obligate Schrock with respect to any expense for the Premises.

As  further set forth in paragraph 2 hereof, Fund XVIII agrees to
require  any lessee of the Premises to name Schrock as an insured
or  additional insured in all insurance policies provided for, or
contemplated by, any lease on the Premises. Fund XVIII shall  use
its best efforts to obtain endorsements adding Co-Tenants to said
policies  from  lessee  within 30 days of  commencement  of  this
agreement.  In  any  event,  Fund  XVIII  shall  distribute   any
insurance proceeds it may receive, to the extent consistent  with
any  lease  on  the Premises, to the Co-Tenants in proportion  to
their respective ownership of the Premises.

2.   Income  and expenses shall be allocated among the Co-Tenants
     in proportion to their respective share(s) of ownership. Shares
     of net income shall be pro-rated for any partial calendar years
     included within the term of this Agreement. Fund XVIII may offset
     against, pay to itself and deduct from any payment due to Schrock
     under  this Agreement, and may pay to itself the  amount  of
     Schrock's share of any reasonable expenses of the Premises which
     are not paid by Schrock to Fund XVIII or its assigns, within ten
     (10) days after demand by Fund XVIII. In the event there  is
     insufficient operating income from which to deduct Schrock's
     unpaid share of operating expenses, Fund XVIII may pursue any and
     all legal remedies for collection.

Operating  Expenses  shall include all normal operating  expense,
including  but not limited to: maintenance, utilities,  supplies,
labor, management, advertising and promotional expenses, salaries
and wages of rental and management personnel, leasing commissions
to  third  parties, a monthly accrual to pay insurance  premiums,
real  estate taxes, installments of special assessments  and  for
structural repairs and replacements, management fees, legal  fees
and accounting fees, but excluding all operating expenses paid by
tenant under terms of any lease agreement of the Premises.

Wood  has  no  requirement to, but has,  nonetheless  elected  to
retain,  and  agrees to annually reimburse,  Fund  XVIII  in  the
amount of $686.00 for the expenses, direct and indirect, incurred
by  Fund XVIII in providing Schrock with quarterly accounting and
distributions of Schrock's share of net income and for  tracking,
reporting  and  assessing the calculation of Schrock's  share  of
operating  expenses  incurred from  the  Premises.  This  invoice
amount   shall  be  pro-rated  for  partial  years  and   Schrock
authorizes Fund XVIII to deduct such amount from Schrock's  share
of   revenue  from  the  Premises.  Schrock  may  terminate  this
agreement   in   this   paragraph   respecting   accounting   and
distributions  at any time and attempt to collect  its  share  of
rental  income directly from the tenant; however, enforcement  of
all  other provisions of the lease remains the sole right of Fund
XVIII pursuant to Section 1 hereof.  Fund XVIII may terminate its
obligation  under this paragraph upon 30 days notice  to  Schrock
prior  to  the end of each anniversary hereof, unless  agreed  in
writing to the contrary.

3.    Full, accurate and complete books of account shall be  kept
in  accordance  with generally accepted accounting principles  at
Fund  XVIII's  principal office, and each  Co-Tenant  shall  have
access  to  such books and may inspect and copy any part  thereof
during  normal business hours. Within ninety (90) days after  the
end  of  each  calendar year during the term hereof,  Fund  XVIII
shall  prepare an accurate income statement for the ownership  of
the  Premises for said calendar year and shall furnish copies  of
the  same  to  all Co-Tenants. Quarterly, as its  share,  Schrock
shall  be entitled to receive 6.5437% of all items of income  and
expense  generated  by  the  Premises.   Upon  receipt  of   said
accounting,  if the payments received by each Co-Tenant  pursuant
to  this  Paragraph 3 do not equal, in the aggregate, the amounts
which  each are entitled to receive proportional to its share  of
ownership  with  respect  to  said  calendar  year  pursuant   to
Paragraph  2 hereof, an appropriate adjustment shall be  made  so
that each Co-Tenant receives the amount to which it is entitled.

4.    If  Net Income from the Premises is less than $0.00  (i.e.,
the  Premises  operates  at a loss), or if capital  improvements,
repairs, and/or replacements, for which adequate reserves do  not
exist,  need  to  be made to the Premises, the  Co-Tenants,  upon
receipt  of  a  written request therefor from Fund XVIII,  shall,
within  fifteen (15) business days after receipt of notice,  make
payment to Fund XVIII sufficient to pay said net operating losses
and  to provide necessary operating capital for the premises  and
to   pay   for   said   capital  improvements,   repairs   and/or
replacements, all in proportion to their undivided  interests  in
and to the Premises.

5.    Co-Tenants  may, at any time, sell, finance,  or  otherwise
create  a lien upon their interest in the Premises but only  upon
their  interest  and not upon any part of the interest  held,  or
owned, by any other Co-Tenant.  All Co-Tenants reserve the  right
to escrow proceeds from a sale of their interests in the Premises
to obtain tax deferral by the purchase of replacement property.

6.    If any Co-Tenant shall be in default with respect to any of
its  obligations hereunder, and if said default is not  corrected
within  thirty  (30)  days after receipt by said  defaulting  Co-
Tenant  of written notice of said default, or within a reasonable
period  if  said default does not consist solely of a failure  to
pay money, the remaining Co-Tenant(s) may resort to any available
remedy to cure said default at law, in equity, or by statute.

7.    This co-tenancy agreement shall continue in full force  and
effect  and shall bind and inure to the benefit of the  Co-Tenant
and  their respective heirs, executors, administrators,  personal
representatives,  successors and permitted assigns  until  August
29,  2031  or upon the sale of the entire Premises in  accordance
with  the  terms hereof and proper disbursement of  the  proceeds

Co-Tenant Initial:  /s/ WLS
Co-Tenancy Agreement for Champps, Columbus, OH (Crosswoods)



thereof,   whichever  shall  first  occur.   Unless  specifically
identified  as  a  personal contract right or obligation  herein,
this  agreement shall run with any interest in the  Premises  and
with  the  title thereto. Once any person, party  or  entity  has
ceased to have an interest in fee in any portion of the Premises,
it  shall  not be bound by, subject to or benefit from the  terms
hereof;   but  its  heirs,  executors,  administrators,  personal
representatives, successors or assigns, as the case may be, shall
be substituted for it hereunder.

8.    Any notice or election required or permitted to be given or
served by any party hereto to, or upon any other, shall be  given
to  all known Co-Tenants and deemed given or served in accordance
with  the  provisions  of  this  Agreement,  if  said  notice  or
elections addressed as follows;

If to Fund XVIII:

AEI Real Estate Fund XVIII Limited Partnership
30 E. Seventh Street, Suite 1300
St. Paul, Minnesota 55101

If to Fund XXI:

AEI Income and Growth Fund XXI Limited Partnership
1300 Minnesota World Trade Center
30 E. Seventh Street
St. Paul, Minnesota 55101

If to Schrock:

Walter L. Schrock
6385 West 330 North
Shipshewana, IN  46565

If to Wood:

Donald B. Wood, Trustee
Sue D. Wood, Trustee
280 Canon Drive
Santa Barbara, CA  93105

If to Bushman:

Lynn Bushman
Camille Bushman
4752 South Ichabod Place
Holladay, UT  84117

Co-Tenant Initial:  /s/ WLS
Co-Tenancy Agreement for Champps, Columbus, OH (Crosswoods)



If to Devlin:

Patrick J. Devlin
Dolores A. Devlin
1902 Lindamoor Drive
Annapolis, MD  21401

If to Rea:

James D. Rea
Mary M. Rea
4712 West Main Street
Northville, MI  48167

If to Tall Pines Farm Limited Partnership:

Fred White, member
E. Louise White, member
Fred V. White, member
Pamela W. Proctor, member
9316 Brandy Wine Lane
Cincinnati, OH  45241

If to Appleton:

Carlos W. Appleton
Mary V. Appleton
101 Meadow Lane
Abilene, TX  79606

If to Thulin:

Edward C. Thulin
Virginia L. Thulin
3309 Hollow Creek Road
Arlington, TX  76001

If to Amend:

James Edward Amend
PO Box 261
Amarillo, TX  79105


Co-Tenant Initial:  /s/ WLS
Co-Tenancy Agreement for Champps, Columbus, OH (Crosswoods)



If to Ainslie:

Ernest E. Ainslie
Marion B. Ainslie
27901 Via De Costa
San Juan Capistrano, CA  92675

If to Abbott:

Richard Abbott
Marjory Abbott
524 Roslyn
East Williston, NY  11596

If to Calderwood:

Calderwood Investments Limited Partnership
Vickie L. Hegebush, general partner
Mary C. Calderwood, general partner
228 E. Fleet Drive
Tempe, AZ  85283

If to Adamson:

The Wayne K. Adamson Second Family Limited Partnership
Wayne Adamson
1985 Jupiter Drive
Montrose, CO  81401

Gerald Adamson
PO Box 666
206 Palm Avenue
Bullhead City, AZ  86430



Each mailed notice or election shall be deemed to have been given
to,  or served upon, the party to which addressed on the date the
same  is  deposited in the United States certified  mail,  return
receipt  requested,  postage prepaid, or given  to  a  nationally
recognized  courier  service guaranteeing overnight  delivery  as
properly addressed in the manner above provided. Any party hereto
may  change  its address for the service of notice  hereunder  by
delivering  written notice of said change to  the  other  parties
hereunder, in the manner above specified, at least ten (10)  days
prior to the effective date of said change.

9.    This  Agreement shall not create any partnership  or  joint
venture  among or between the Co-Tenants or any of them, and  the
only  relationship  among  and between the  Co-Tenants  hereunder

Co-Tenant Initial:  /s/ WLS
Co-Tenancy Agreement for Champps, Columbus, OH (Crosswoods)



shall  be  that  of owners of the premises as tenants  in  common
subject to the terms hereof.

10.    The  unenforceability or invalidity of  any  provision  or
provisions  of  this Agreement as to any person or  circumstances
shall  not render that provision, nor any other provision hereof,
unenforceable or invalid as to any other person or circumstances,
and  all  provisions hereof, in all other respects, shall  remain
valid and enforceable.


11.   In  the  event  any litigation arises between  the  parties
hereto  relating  to  this Agreement, or any  of  the  provisions
hereof, the party prevailing in such action shall be entitled  to
receive  from the losing party, in addition to all other  relief,
remedies  and  damages  to  which it is otherwise  entitled,  all
reasonable  costs  and expenses, including reasonable  attorneys'
fees,  incurred by the prevailing party in connection  with  said
litigation.




          (REMAINDER OF PAGE INTENTIONALLY LEFT BLANK)





Co-Tenant Initial:  /s/ WLS
Co-Tenancy Agreement for Champps, Columbus, OH (Crosswoods)







IN WITNESS WHEREOF, The parties hereto have caused this Agreement
to be executed and delivered, as of the day and year first above
                            written.

          Walter L. Schrock

          By: /s/ Walter L Schrock
                  Walter L. Schrock


          WITNESS:

          /s/ Jeffrey A James

              Jeffrey A James
               (Print Name)






State of Indiana)
                         ) ss.
County of La Grange )

I,  a Notary Public in and for the state and county of aforesaid,
hereby certify there appeared before me this 17 day of May, 2001,
Walter L. Schrock, who executed the foregoing instrument in  said
capacity, on behalf of said limited partnership.


                              /s/ Ann L Pomeroy
                                  Notary Public

[notary seal]



Fund XVIII AEI Real Estate Fund XVIII Limited Partnership

            By: AEI Fund Management XVIII, Inc., its corporate
                general partner

            By: /s/ Robert P Johnson
                    Robert P. Johnson, President



Co-Tenant Initial:  /s/ WLS
Co-Tenancy Agreement for Champps, Columbus, OH (Crosswoods)



          WITNESS:

          /s/ Debra A Jochum

              Debra A Jochum
               (Print Name)




State of Minnesota )
                                   ) ss.
County of Ramsey  )

I,  a Notary Public in and for the state and county of aforesaid,
hereby certify there appeared before me this 22 day of May, 2001,
Robert P. Johnson, President of AEI Fund Management XVIII,  Inc.,
corporate  general partner of AEI Real Estate Fund XVIII  Limited
Partnership,  who  executed  the  foregoing  instrument  in  said
capacity  and  on  behalf of the corporation in its  capacity  as
corporate general partner, on behalf of said limited partnership.

                              /s/ Heather A Garcia
                                   Notary Public

[notary seal]







Co-Tenant Initial:  /s/ WLS
Co-Tenancy Agreement for Champps, Columbus, OH (Crosswoods)



                            EXHIBIT A


     Situated in the State of Ohio, county of Franklin,  City  of
     Columbus, being located in Section 2, Township 2, Range  18,
     United  States Military Lands, and being part  of  a  43.161
     acre tract of land (Parcel No. 610-146452) conveyed to Forty-
     One  Corporation (the Grantor) by deed of record in Official
     Record  15500A-6,  all references being to  records  in  the
     Recorder's  Office, Franklin County, Ohio,  and  being  more
     particularly described as follows:

     Beginning  for reference at the intersection of  North  High
     Street (U.S. 23) and East Campus jView Boulevard (80.00 feet
     in width) as shown in Plat Book 60, page 25;

     thence  S  86 49' 53" E, along the centerline of  said  East
     Campus View boulevard, a distance of 900.00 feet to a  point
     of curvature;

     thence  along  the  centerline  of  said  East  Campus  View
     Boulevard,  with  a  curve to the left having  a  radius  of
     1350.00 feet, a chord bearing of N 89 27' 50" E, and a chord
     distance  of 174.45 feet to the intersection with centerline
     of High Cross Boulevard (80.00 feet in width);

     thence  S  1  53' 32" E, along the centerline of  said  High
     Cross Boulevard, a distance of 74.72 feet to a point;

     thence  N 88 06' 28" E, a distance of 40.00 feet to an  iron
     pin set in the easterly right of way line of said High Cross
     Boulevard,  said point being the TRUE POINT OF BEGINNING  of
     herein described tract;

     thence  along  the easterly right of way line of  said  High
     Cross  Boulevard, with a curve to the right, having a radius
     of  40.00  feet, a chord bearing of N 40 23' 34"  E,  and  a
     chord  distance  of 53.83 feet to an iron  pin  set  in  the
     southerly  right  of  way  line of  said  East  Campus  View
     Boulevard;

     thence  along the southerly right of way line of  said  East
     Campus  View  Boulevard  and the northerly  line  of  herein
     described tract, with a curve to the left, having  a  radius
     of  1390.009 feet, a chord bearing of N 82 25' 24" E, and  a
     chord distance of 12.36 feet to an iron pin set;

     thence N 82 10' 07" E, along the southerly right of way line
     of said East Campus View Boulevard and the northerly line of
     herein described tract, a distance of 209.28 feet to an iron
     pin  set  at  the  northeasterly corner of herein  described
     tract;

     thence  S  7  49' 49" E, along the easterly line  of  herein
     described  tract, a distance of 312.60 feet to an  iron  pin
     set at the southeasterly corner of herein described tract;

     thence  S  82 10' 11" W, along the southerly line of  herein
     described  tract, a distance of 918.01 feet to an  iron  pin
     set  in  the  easterly right of way line of said High  Cross
     Boulevard  at  the southwesterly corner of herein  described
     tract;

     thence along the easterly right of way line of said proposed
     High  Cross  Boulevard  and  the  westerly  line  of  herein
     described tract, with a curve to the right, having a  radius
     of  2960.00 feet, a chord bearing of N 9 21' 59"  E,  and  a
     chord distance of 10.64 feet to an iron pin set;

     thence  N 9 28' 10" E, along the easterly right of way  line
     of said High Cross Boulevard and the westerly line of herein
     described  tract, a distance of 89.24 feet to  an  iron  pin
     set;

     thence  along  the easterly right of way line of  said  High
     Cross  Boulevard  and the westerly line of herein  described
     tract,  with a curve to the left, having a radius of  390.00
     feet, a chord bearing of N 3 47' 19" E, and a chord distance
     of 77.21 feet to an  iron pin set;

     thence  N 1 53' 32" W, along the easterly right of way  line
     of said High Cross Boulevard and the westerly line of herein
     described tract, a distance of 106.36 feet to the TRUE POINT
     OF  BEGINNING,  containing 2.005 acres, more  or  less,  and
     subject to any rights of way, easements and restrictions  of
     record.

The Basis of Bearing in this description is the centerline of
East Campus View Boulevard being S 86 49' 53" E, as shown in Plat
Book 61, page 79, Recorder's Office, Franklin County, Ohio.