Exhibit 21.1

Entity Name

State of Incorporation1 Madison Residential Holdings B LLC

Delaware100 Church Fee Owner LLC

Delaware1010 Washington SLG Owner LLC

Delaware107-30 Rockaway Blvd LLC

Delaware108-01 Rockaway Blvd LLC

Delaware11W34 Investor LLC

Delaware125 Park Owner LLC (f/k/a SLG 125 Park LLC)

Delaware150 Grand Owner LLC

Delaware1515 Office TRS Corp.

Delaware1515 Promote LLC

Delaware1515 SLG Optionee LLC

Delaware1515 SLG Private REIT LLC

Delaware1775 Broadway Member LLC

Delaware2 Herald Owner LLC

Delaware292 Madison Owner LLC

Delaware300 Main Lessee LLC

Delaware333W34 SLG Owner LLC

Delaware673 Interest Holder LLC

Delaware750 Third Owner LLC

Delaware885 Third Fee LLC

Delaware885 Third Lot A Owner LLC

Delaware885 Third Owner LLC

Delaware919 Ground Lease Member LLC

DelawareBelmont Insurance Company

New YorkConcept Space LLC

DelawareeEmerge, Inc

Delaware, New YorkGKK Manager Member Corp.

DelawareGreater New York Property LLC

DelawareGreen 1250 Broadway Acquisition LLC

Delaware, New YorkGreen 1250 Broadway LLC

Delaware, New YorkGreen 141 Fifth Investment LLC

DelawareGreen 141 Fifth Participation Corp.

DelawareGreen 1604 Investment LLC

DelawareGreen 28W44 LLC

DelawareGreen 28W44 Mezz LLC

DelawareGreen 317 Madison LLC

Delaware, New YorkGreen 379 Broadway LLC

DelawareGreen 461 Fifth Lessee LLC

Delaware, New YorkGreen 485 Holdings LLC

DelawareGreen 521 Fifth Mezz LLC

DelawareGreen 625 Mezz Lessee LLC

DelawareGreen 673 SPE Member Inc.

New YorkGreen 711 Fee Manager LLC

DelawareGreen 711 LM LLC

New YorkGreen 711 Mortgage Manager LLC

DelawareGreen 711 Sublease Manager LLC

DelawareGreen 800 Third Holdings LLC

DelawareGreen 800 Third LLC

DelawareGreen Broadway Nassau LLC

DelawareGreen Broadway/34 Investment LLC

DelawareGreen Hill Acquisition LLC

Delaware, New York


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Entity Name

State of IncorporationGreen Jericho Member LLC

DelawareGreen Loan Services LLC

DelawareGreen Meadows Member LLC

DelawareGreen W 57TH ST LLC

New YorkJericho Promote Member LLC

DelawareLandmark Square 1-6 LLC

DelawareNew Green 28W44 LLC

DelawareNew Green 673 Realty LLC

New YorkNorth 3rd Acquisition LLC

DelawareOS MEADOWS MEMBER II, LLC

DelawareReckson Operating Partnership, L.P.

DelawareS.L. Green Management Corp.

New YorkSL Green 100 Park LLC

New YorkSL Green 800 JV Member LLC

DelawareSL Green Capital Trust I

DelawareSL Green Funding LLC*

New YorkSL Green Management LLC

Delaware, New YorkSL Green Realty Acquisition LLC

Delaware, New YorkSL Green Servicing Corp.

DelawareSLG 1330 AOA LLC

DelawareSLG 1372 BROADWAY GP LLC

DelawareSLG 1372 Broadway Limited Partner LLC

DelawareSLG 1515 Broadway Finance LLC

DelawareSLG 16 Court Street LLC

DelawareSLG 1745 GP LLC

DelawareSLG 1745 LP LLC

DelawareSLG 2 Herald LLC

DelawareSLG 2 Herald Manager LLC

DelawareSLG 220 News MZ LLC

Delaware, New YorkSLG 220 News Owner LLC

Delaware, New YorkSLG 331 Madison LLC

DelawareSLG 388 Greenwich Promote LLC

DelawareSLG 388 Greenwich Shareholder LLC

DelawareSLG 48 E. 43rd LLC

DelawareSLG 500 West Putnam Owner LLC

DelawareSLG 600 Lexington Promote LLC

DelawareSLG 600 Lexington SH LLC

DelawareSLG 609 Fifth LLC

DelawareSLG 625 Lessee LLC

DelawareSLG 7 Renaissance Member LLC

DelawareSLG 711 Fee LLC

New YorkSLG 711 Third LLC

New YorkSLG 711 Third Sublandlord LLC

DelawareSLG 717 Fifth Member LLC

DelawareSLG 885 Third Manager LLC

DelawareSLG Asset Management Fee LLC

Delaware, New YorkSLG Elevator Holdings LLC

New YorkSLG Gramercy Services LLC

DelawareSLG Graybar Mesne Lease Corp

New YorkSLG Graybar Mesne Lease I LLC

DelawareSLG Graybar Mesne Lease LLC

New YorkSLG Graybar New Ground Lessee LLC

DelawareSLG Graybar New Lessee LLC

Delaware


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Entity Name

State of IncorporationSLG Graybar Sublease Corp

New YorkSLG Graybar Sublease LLC

New YorkSLG IRP Realty LLC

New YorkSLG LeaseCo Member LLC

DelawareSLG Lightpath LLC

DelawareSLG Madison Investment LLC

DelawareSLG One Park Shareholder II LLC

DelawareSLG One Park Shareholder LLC

DelawareSLG OpCo Holdings LLC

DelawareSLG OpCo Member LLC

DelawareSLG Protective TRS Corp

Delaware, New YorkSLG RSVP Member LLC

DelawareSLG Tower 45 LLC

DelawareStructured Finance TRS Corp.

Delaware


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