Exhibit 21.1


Subsidiary		Jurisdiction of Organization
1 Ellis St, LLC		Delaware
101 OLD WINDSOR ROAD, LLC		Delaware
1038 W 35TH ST., LLC		Delaware
10400 Riverside Drive, LLC		Delaware
1053 CROMWELL AVENUE, LLC		Delaware
1074 Raritan Road, LLC		Delaware
111 Cedar Street Investors, LLC		Delaware
115 Cedar Street Investors, LLC		Delaware
12250 El Dorado Parkway, LLC		Delaware
12902 South 301 Highway, LLC		Delaware
1518 S Washington Ave, LLC		Delaware
1575 NORTH BLAIRS BRIDGE ROAD, LLC		Delaware
1830 E ROOSEVELT RD., LLC		Delaware
186 JAMAICA AVE, LLC		Delaware
191 III CUBE GA SUB LLC		Delaware
191 IV 225 LORDSHIP BLVD, LLC		Delaware
191 IV 9199 RED BRANCH ROAD, LLC		Delaware
191 IV CUBE LLC		Delaware
191 V 1500 NORTHPARK DRIVE, LLC		Delaware
191 V CUBE LLC		Delaware
2225 46TH ST, LLC		Delaware
2301 TILLOTSON AVE, LLC		Delaware
251 JAMAICA AVE, LLC		Delaware
2701 S. CONGRESS AVENUE, LLC		Delaware
2880 Exterior St, LLC		Delaware
2880 EXTERIOR STREET TRS, LLC		Delaware
295 E. Ocotillo Road, LLC		Delaware
300 E IL ROUTE 22, LLC		Delaware
3068 CROPSEY AVENUE, LLC		Delaware
3103 N. Decatur Road, LLC		Delaware
33-24 Woodside Avenue, LLC		Delaware
3437 Astoria LLC		Delaware
3437 Astoria TRS, LLC		Delaware
350 Main Street, LLC		Delaware
3526 OAKTON ST., LLC		Delaware
38-01 47TH Avenue, LLC		Delaware
38300 North Gantzel Road, LLC		Delaware
41-06 Delong Street - Retail, LLC		Delaware
41-06 Delong Street, LLC		Delaware
4211 BELLAIRE BLVD., LLC		Delaware
430 1ST AVENUE SOUTH, LLC		Delaware
4370 Fountain Hills Drive NE, LLC		Delaware
444 55TH STREET, LLC		Delaware
4441 Alma Road, LLC		Delaware
5 Old Lancaster Associates, LLC		Pennsylvania
500 MILDRED AVENUE PRIMOS, LLC		Delaware
5505 Maple Ave, LLC		Delaware
5700 WASHINGTON AVENUE, LLC		Delaware
5715 BURNET ROAD, LLC		Delaware
610 SAWDUST ROAD, LLC		Delaware
619 Somerset St, LLC		Delaware
7205 Vanderbilt Way, LLC		Delaware
7605-7645 QUINCY AVE, LLC		Delaware
8 Breiderhoft Rd, LLC		Delaware
8552 BAYMEADOWS ROAD, LLC		Delaware
9641 Annapolis Road, LLC		Delaware
Astoria Investors, LLC		Delaware
California Yacht Club		California

Subsidiary		Jurisdiction of Organization
Club Holding Corp.		California
CONSHOHOCKEN GP II, LLC		Delaware
CS 1031 Acquisition, LLC		Delaware
CS 1158 MCDONALD AVE, LLC		Delaware
CS 160 EAST 22ND ST, LLC		Delaware
CS 2087 HEMPSTEAD TPK, LLC		Delaware
CS 750 W MERRICK RD, LLC		Delaware
CS ANNAPOLIS HOLDINGS, LLC		Delaware
CS ANNAPOLIS, LLC		Delaware
CS CAPITAL INVESTORS, LLC		Delaware
CS FLORIDA AVENUE, LLC		Delaware
CS LOCK UP ANOKA TRS, LLC		Delaware
CS LOCK UP ANOKA, LLC		Delaware
CS SDP EVERETT BORROWER, LLC		Delaware
CS SDP Everett, LLC		Delaware
CS SDP Newtonville, LLC		Delaware
CS SDP WALTHAM BORROWER, LLC		Delaware
CS SDP WALTHAM, LLC		Delaware
CS SHIRLINGTON, LLC		Delaware
CS SNL NEW YORK AVE, LLC		Delaware
CS VALLEY FORGE VILLAGE STORAGE TRS, LLC		Delaware
CS VALLEY FORGE VILLAGE STORAGE, LLC		Delaware
CS VENTURE I, LLC		Delaware
CS Vienna TRS, LLC		Delaware
CS Vienna, LLC		Delaware
CUBE HHF Limited Partnership		Delaware
CUBE HHF NORTHEAST CT, LLC		Delaware
CUBE HHF NORTHEAST MA, LLC		Delaware
CUBE HHF NORTHEAST RI, LLC		Delaware
CUBE HHF NORTHEAST SUB HOLDINGS LLC		Delaware
CUBE HHF NORTHEAST TRS, LLC		Delaware
CUBE HHF NORTHEAST VENTURE LLC		Delaware
CUBE HHF NORTHEAST VT, LLC		Delaware
CUBE HHF TRS, LLC		Delaware
CUBE IV TRS LLC		Delaware
CUBE V TRS LLC		Delaware
CUBE VENTURE GP, LLC		Delaware
CubeSmart		Maryland
CUBESMART 338 3RD AVENUE, LLC		Delaware
CUBESMART 39-25 21ST STREET, LLC		Delaware
CubeSmart Asset Management, LLC		Delaware
CUBESMART BARTOW, LLC		Delaware
CUBESMART BOSTON ROAD, LLC		Delaware
CUBESMART CLINTON, LLC		Delaware
CUBESMART EAST 135TH, LLC		Delaware
CubeSmart Management, LLC		Delaware
CUBESMART SOUTHERN BLVD, LLC		Delaware
CUBESMART TEMPLE HILLS, LLC		Delaware
CUBESMART TIMONIUM BORROWER, LLC		Delaware
CubeSmart Timonium, LLC		Delaware
CubeSmart TRS, Inc.		Ohio
CubeSmart, L.P.		Delaware
EAST COAST GP, LLC		Delaware
EAST COAST STORAGE PARTNERS, L.P.		Delaware
Fontana Self Storage TRS, LLC		Delaware
Fontana Self Storage, LLC		Delaware
FREEHOLD MT, LLC		Delaware
LAACO, Ltd.		California
LANGHORNE GP II, LLC		Delaware
Lantana Property Owner's Association, Inc.		Florida

Subsidiary		Jurisdiction of Organization
MONTGOMERYVILLE GP II, LLC		Delaware
New Rochelle Investors, LLC		Delaware
Nuvo Business Center at the Gardens Property Owners Association, Inc.		Florida
Old Lancaster Venture, L.P.		Pennsylvania
PSI Atlantic Holbrook NY, LLC		Delaware
PSI Atlantic Lithia Springs GA, LLC		Delaware
PSI Atlantic Villa Rica GA, LLC		Delaware
PSI Atlantic Villa Rica Parcel Owner, LLC		Delaware
R STREET STORAGE ASSOCIATES, LLC		Maryland
Rancho Cucamonga Self Storage TRS, LLC		Delaware
Rancho Cucamonga Self Storage, LLC		Delaware
SHIRLINGTON RD II, LLC		Delaware
SHIRLINGTON RD TRS, LLC		Delaware
SHIRLINGTON RD, LLC		Delaware
SOMERSET MT, LLC		Delaware
STORAGE PARTNERS OF CONSHOHOCKEN, L.P.		Delaware
Storage Partners of Freehold II, LLC		Delaware
Storage Partners of Langhorne II, LP		Delaware
STORAGE PARTNERS OF MONTGOMERYVILLE, L.P.		Delaware
STORAGE PARTNERS OF SOMERSET, LLC		Delaware
UNITED-HSRE I, L.P.		Delaware
U-Store-It Development LLC		Delaware
U-Store-It Trust Luxembourg S.ar.l.		Luxembourg
Valley Forge Storage Venture, LLC		Delaware
Wider Reach, LLC		Delaware
YSI HART TRS, INC		Delaware
YSI I LLC		Delaware
YSI II LLC		Delaware
YSI XXXI, LLC		Delaware
YSI XXXIII, LLC		Delaware
YSI XXXVII, LLC		Delaware