Exhibit 21.1
CORPORATE OFFICE PROPERTIES TRUST
SUBSIDIARIES OF REGISTRANT
Delaware
Airport Square Holdings I, LLC
Airport Square Holdings VI and VII, LLC
Blue Bell Investment Company, LP
Comcourt Investors, LP
COPT Acquisitions, Inc.
COPT Concourse, LLC
Corporate Office Properties, LP
Corporate Office Properties Holdings, Inc.
Crown Point, L.L.C.
Delaware Airport III, LLC
Delaware Airport VIII, LLC
Delaware Airport IX, 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.
Sterling York, LLC
South Brunswick Investors, LP
11800 Tech Road, LLC
Maryland
Airport Square, LLC
Airport Square II, LLC
Airport Square IV, LLC
Airport Square V, LLC
Airport Square X, LLC
Airport Square XI, LLC
Airport Square XIII, LLC
Airport Square XIV, LLC
Airport Square XV, LLC
Airport Square XIX, LLC
Airport Square XX, LLC
Airport Square XX Parking, LLC
Airport Square XXI, LLC
Airport Square Partners, LLC
Airport Square Storms, LLC
Atrium Building, LLC
Browns Wharf, LLC
Commons Office Research, LLC
Concourse 1304, LLC
COPT Gate 63, LLC
COPT Gate 6700-6708-6724, LLC
COPT Gateway, LLC
COPT Montpelier, LLC
COPT T-11, LLC
Corporate Cooling & Controls, LLC
Corporate Development Services, LLC
Corporate Gatespring, LLC
Corporate Gatespring II, LLC
Corporate Management Services, LLC
Corporate Office Management, Inc.
Corporate Office Services, LLC
Corporate Paragon, LLC
Corporate Property, LLC
Corporate Realty Management, LLC
Corporate Realty Advisors, LLC
Cornucopia Holdings, LLC
Cornucopia Holdings II, LLC
Enterprise Campus Developer, LLC
Fourth Exploration, L.L.C.
Fifth Exploration, L.L.C.
Gateway 44, LLC
Gateway 67, LLC
Gateway 70, LLC
Honeyland 108, LLC
Jolly COPT I, LLC
Jolly COPT II, LLC
Lakeview at the Greens, LLC
M Square NOAA, LLC
MOR Forbes, LLC
MOR Forbes 2, LLC
MOR Montpelier 3, LLC
NBP One, LLC
NBP Huff & Puff, LLC
NBP Lot 3-A, LLC
NBP Retail, LLC
NBP 131-133-141, LLC
NBP 132, LLC
NBP 134, LLC
NBP 135, LLC
NBP 140, LLC
NBP 140 Holdings, LLC
NBP 191, LLC
NBP 201, LLC
NBP 201 Holdings, LLC
NBP 211, LLC
NBP 211 Holdings, LLC
NBP 220, LLC
NBP 220 Holdings, LLC
NBP 221, LLC
NBP 302, LLC
NBP 304, LLC
NBP 306, LLC
NBP 318, LLC
NBP 320, LLC
NBP 322, LLC
Pecan Court, L.L.C.
Red Cedar Building, LLC
RIVA Trustee, LLC
Tech Park I, LLC
Tech Park II, LLC
Tech Park IV, LLC
Third Exploration, L.L.C.
2500 Riva Trust
67 Financing, LLC
6711 Gateway Funding, LLC
6731 Gateway, LLC
7000 Honeys, LLC
7200 Riverwood, LLC
7240 Parkway Drive Enterprises, LLC
7318 Parkway Drive Enterprises, LLC
7320 Parkway Drive Enterprises, LLC
7321 Parkway Drive Enterprises, LLC
8681 Robert Fulton Drive, LLC
9690 Deereco Road, LLC
New Jersey
COPT Princeton South, LLC
Cuaba Associates, L.L.C.
Princeton Executive, LLC
68 Culver, LLC
Route 46 Partners, L.L.C.
Pennsylvania
Bolivar Associates, LLC
Corporate Gateway General Partnership
COPT Gateway, LP
COPT Pennlyn, L.P.
Gateway Central Limited Partnership
6385 Flank Drive, LP
Virginia
COPT Chantilly, LLC
COPT Chantilly II, LLC
COPT Dahlgren, LLC
COPT Dahlgren I, LLC
COPT Dahlgren IV, LLC
COPT Greens I, LLC
COPT Greens II, LLC
COPT Greens III, LLC
COPT Park Meadow, LLC
COPT Ridgeview I, LLC
COPT Ridgeview II & III, LLC
COPT Stonecroft, LLC
COPT Sunrise, LLC
COPT Waterview I, LLC
COPT Waterview III, LLC
TRC Pinnacle Towers, L.L.C.