Exhibit 21.1
CORPORATE OFFICE PROPERTIES TRUST
 
 
 
SUBSIDIARIES OF REGISTRANT
 
 
 
 
 
 
 
Alabama
 
 
 
COPT Bridge Street Office, LLC
 
 
 
 
 
 
 
Delaware
 
 
 
2100 L Holdings, LLC
 
 
 
2100 L Subsidiary LLC
 
 
 
Advanced Gateway 7500, LLC
 
 
 
Advanced Gateway 7600, LLC
 
 
 
Advanced Gateway 7700-7800, LLC
 
 
 
Advanced Gateway 8600, LLC
 
 
 
Airport Square Holdings I, LLC
 
 
 
Airport Square Holdings VI and VII, LLC
 
 
 
Blue Bell Investment Company, L.P.
 
 
 
COPT Acquisitions, Inc.
 
 
 
COPT BK Holdco, LLC
 
 
 
COPT DC-6, LLC
 
 
 
COPT Maritime I & II, LLC
 
 
 
COPT Stevens Place, LLC
 
 
 
Corporate Office Properties Holdings, Inc.
 
 
 
Corporate Office Properties, L.P.
 
 
 
DC-11 DE, LLC
 
 
 
DC-12-14 DE, LLC
 
 
 
DC-8-9-10 DE, LLC
 
 
 
Delaware Airport IX, LLC
 
 
 
Delaware Airport VIII, LLC
 
 
 
GI-COPT DC Partnership LLC
 
 
 
Great Mills I, L.L.C.
 
 
 
Great Mills II, L.L.C.
 
 
 
Great Mills III, L.L.C.
 
 
 
Great Mills IV, L.L.C.
 
 
 
Great Mills V, L.L.C.
 
 
 
LW Redstone Company, LLC
 
 
 
Powerloft Holdings, LLC
 
 
 
Profit Interest Holding LLC
 
 
 
Redstone Gateway 100, LLC
 
 
 
Redstone Gateway 1000, LLC
 
 
 
Redstone Gateway 1100, LLC
 
 
 
Redstone Gateway 1200, LLC
 
 
 
Redstone Gateway 2100, LLC
 
 
 
Redstone Gateway 2400, LLC
 
 
 
Redstone Gateway 4000, LLC
 
 
 
Redstone Gateway 4100, LLC
 
 
 
Redstone Gateway 6500, LLC
 
 
 
Redstone Gateway 7100, LLC
 
 
 
Redstone Gateway 7200, LLC
 
 
 
Redstone Gateway 8000, LLC
 
 
 
Redstone Gateway 8800, LLC
 
 
 
Stevens Investors, LLC
 
 
 
Stevens School Holdings, LLC
 
 
 
 
 
 
 





Maryland
 
 
 
100 Charm City, LLC
 
 
 
100 LS Borrower, LLC
 
 
 
1460 Dorsey Road, LLC
 
 
 
1550 Nursery, LLC
 
 
 
250 Charm City, LLC
 
 
 
2500 Riva Trust
 
 
 
30 Charm City, LLC
 
 
 
30 LS Borrower, LLC
 
 
 
45310 Abell House, LLC
 
 
 
6711 Gateway, LLC
 
 
 
6721 Gateway, LLC
 
 
 
6731 Gateway, LLC
 
 
 
6741 Gateway, LLC
 
 
 
7000 Honeys, LLC
 
 
 
7005 Columbia Gateway, LLC
 
 
 
7015 Albert Einstein Drive, L.L.C.
 
 
 
7200 Riverwood, LLC
 
 
 
7205 Riverwood, LLC
 
 
 
7318 Parkway Drive Enterprises, LLC
 
 
 
7740 Milestone, LLC
 
 
 
7760 Milestone Parkway, LLC
 
 
 
7780 Milestone Parkway, LLC
 
 
 
7874 Milestone Parkway, LLC
 
 
 
7876 Milestone Parkway, LLC
 
 
 
7878 Milestone Parkway, LLC
 
 
 
7880 Milestone Parkway, LLC
 
 
 
Airport Square IV, LLC
 
 
 
Airport Square Partners, LLC
 
 
 
Airport Square Storms, LLC
 
 
 
Airport Square V, LLC
 
 
 
Airport Square XI, LLC
 
 
 
Airport Square XIII, LLC
 
 
 
Airport Square XXII, LLC
 
 
 
Airport Square, LLC
 
 
 
AP#5 Lot A, LLC
 
 
 
AP#5 Lot B, LLC
 
 
 
AP#5 Lot C, LLC
 
 
 
Arundel Preserve #5, LLC
 
 
 
Clarks Hundred II, LLC
 
 
 
Clarks Hundred, LLC
 
 
 
Colgatedrive Associates, LLC
 
 
 
Columbia Equity Finance, LLC
 
 
 
Columbia Gateway S-28, L.L.C.
 
 
 
COMI Investments, LLC
 
 
 
Commons Office 6-B, LLC
 
 
 
Commons Office Research, LLC
 
 
 
COPT Aberdeen, LLC
 
 
 
COPT AP 9, LLC
 
 
 
COPT Arundel Preserve, LLC
 
 
 
COPT Baltimore County I, LLC
 
 
 
COPT Baltimore County II, LLC
 
 
 
COPT Brock Bridge, LLC
 
 
 
COPT CC 1600, LLC
 
 
 





COPT CC Bulkhead, LLC
 
 
 
COPT CC D1, LLC
 
 
 
COPT CC Holding, LLC
 
 
 
COPT CC Parking, LLC
 
 
 
COPT CC Tower, LLC
 
 
 
COPT CCW I, LLC
 
 
 
COPT CCW II, LLC
 
 
 
COPT CCW III, LLC
 
 
 
COPT Data Management, LLC
 
 
 
COPT Development & Construction Services, LLC
 
 
 
COPT Frederick, LLC
 
 
 
COPT Gate 63, LLC
 
 
 
COPT Gate 6700-6708-6724, LLC
 
 
 
COPT General, LLC
 
 
 
COPT Harbour's Edge, LLC
 
 
 
COPT Huntsville, LLC
 
 
 
COPT Northgate A, LLC
 
 
 
COPT Northgate B, LLC
 
 
 
COPT Northgate C, LLC
 
 
 
COPT Northgate D, LLC
 
 
 
COPT Northgate H, LLC
 
 
 
COPT Northgate I, LLC
 
 
 
COPT Powerhouse, LLC
 
 
 
COPT Pres Investment, LLC
 
 
 
COPT Property Management Services, LLC
 
 
 
COPT Renovation, LLC
 
 
 
COPT Riverwood, LLC
 
 
 
COPT T-11, LLC
 
 
 
COPT Virtru, LLC
 
 
 
COPT-Kirk AP#5, LLC
 
 
 
Corporate Development Services, LLC
 
 
 
Corporate Gatespring II, LLC
 
 
 
Corporate Gatespring, LLC
 
 
 
Corporate Office Management, Inc.
 
 
 
Corporate Office Services, LLC
 
 
 
Enterprise Campus Developer, LLC
 
 
 
Fifth Exploration, L.L.C.
 
 
 
Fourth Exploration, L.L.C.
 
 
 
Gateway 44, LLC
 
 
 
Gateway 67, LLC
 
 
 
Gateway 70, LLC
 
 
 
Gateway Crossing 95, LLC
 
 
 
Honeyland 108, LLC
 
 
 
Huntsville Holdings, LLC
 
 
 
Jolly COPT I, LLC
 
 
 
Jolly COPT II, LLC
 
 
 
M Square 4600, LLC
 
 
 
M Square 5801, LLC
 
 
 
M Square 5825, LLC
 
 
 
M Square 5850, LLC
 
 
 
M Square Associates, LLC
 
 
 
M Square Park, LLC
 
 
 
Maritime Holdings, LLC
 
 
 
MOR Forbes, LLC
 
 
 





NBP 131, LLC
 
 
 
NBP 132, LLC
 
 
 
NBP 133, LLC
 
 
 
NBP 134, LLC
 
 
 
NBP 135, LLC
 
 
 
NBP 140, LLC
 
 
 
NBP 141, LLC
 
 
 
NBP 191, LLC
 
 
 
NBP 201, LLC
 
 
 
NBP 211, LLC
 
 
 
NBP 220, LLC
 
 
 
NBP 221, LLC
 
 
 
NBP 300 Restaurant, LLC
 
 
 
NBP 300, LLC
 
 
 
NBP 302, LLC
 
 
 
NBP 304, LLC
 
 
 
NBP 306, LLC
 
 
 
NBP 308, LLC
 
 
 
NBP 310, LLC
 
 
 
NBP 312, LLC
 
 
 
NBP 314, LLC
 
 
 
NBP 316, LLC
 
 
 
NBP 318, LLC
 
 
 
NBP 320, LLC
 
 
 
NBP 322, LLC
 
 
 
NBP 324, LLC
 
 
 
NBP 410, LLC
 
 
 
NBP 420, LLC
 
 
 
NBP 430, LLC
 
 
 
NBP 520, LLC
 
 
 
NBP 540, LLC
 
 
 
NBP Huff & Puff, LLC
 
 
 
NBP Lot 3-A, LLC
 
 
 
NBP One, LLC
 
 
 
NBP Retail, LLC
 
 
 
Nottingham Ridge Holding Corp.
 
 
 
One Sellner Road, LLC
 
 
 
Park Circle Equities, LLC
 
 
 
Pecan Court L.L.C.
 
 
 
Red Cedar Building, LLC
 
 
 
RG 2100 Restaurant, LLC
 
 
 
RIVA Trustee, LLC
 
 
 
Riverwood Business Center Equity Affiliates, LLC
 
 
 
Third Exploration L.L.C.
 
 
 
 
 
 
 
Texas
 
 
 
C Texas SG, LLC
 
 
 
COPT 8000 Potranco, L.P.
 
 
 
COPT 8030 Potranco, L.P.
 
 
 
COPT 8100 Potranco, L.P.
 
 
 
COPT SA Technology Center, L.P.
 
 
 
COPT San Antonio , L.P.
 
 
 
COPT San Antonio General, LLC
 
 
 
COPT San Antonio II, L.P.
 
 
 





COPT Westpointe 3A, L.P.
 
 
 
COPT Westpointe 4, L.P.
 
 
 
 
 
 
 
Virginia
 
 
 
Beaumeade LC Phase III, LLC
 
 
 
Cabin Branch Creek, LLC
 
 
 
COPT Connect, LLC
 
 
 
COPT Dahlgren I, LLC
 
 
 
COPT Dahlgren II, LLC
 
 
 
COPT Dahlgren IV, LLC
 
 
 
COPT Dahlgren Land, LLC
 
 
 
COPT Dahlgren, LLC
 
 
 
COPT DC Innovation, LLC
 
 
 
COPT DC Partner, LLC
 
 
 
COPT DC-21, LLC
 
 
 
COPT Greens I, LLC
 
 
 
COPT Greens II, LLC
 
 
 
COPT Greens III, LLC
 
 
 
COPT McLearen, LLC
 
 
 
COPT Metro Place II, LLC
 
 
 
COPT Park Meadow, LLC
 
 
 
COPT Parkstone, LLC
 
 
 
COPT Ridgeview I, LLC
 
 
 
COPT Ridgeview II & III, LLC
 
 
 
COPT Stonecroft, LLC
 
 
 
COPT Sunrise, LLC
 
 
 
DC-12-14, LLC
 
 
 
Maries Tech Park, LLC
 
 
 
Patriot Ridge 7770, LLC
 
 
 
Patriot Ridge Commons, LLC
 
 
 
Patriot Ridge Holdings, LLC
 
 
 
Patriot Ridge I, LLC
 
 
 
Patriot Ridge II, LLC
 
 
 
South Point Phase II, LLC
 
 
 
TRC Pinnacle Towers, L.L.C.
 
 
 
Waterside I, LLC