Annual report pursuant to Section 13 and 15(d)

Schedule III - Real Estate and Accumulated Depreciation

v3.19.3.a.u2
Schedule III - Real Estate and Accumulated Depreciation
12 Months Ended
Dec. 31, 2019
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]  
Schedule III-Real Estate and Accumulated Depreciation
Schedule III—Real Estate and Accumulated Depreciation
December 31, 2019
(Dollars in thousands)
 
 
 
Initial Cost
 
Gross Amounts Carried
At Close of Period
 
 
 
Property (Type) (1)
Location
Encumbrances (2)
Land
Building and Land Improvements
Costs Capitalized Subsequent to Acquisition
Land
Building and Land Improvements
Total (3)
Accumulated Depreciation (4)
Year Built or Renovated
Date Acquired (5)
100 Light Street (O)
Baltimore, MD
$
47,529

$
26,715

$
59,177

$
12,989

$
26,715

$
72,166

$
98,881

$
(16,790
)
1973/2011
8/7/2015
100 Secured Gateway (O)
Huntsville, AL


25,763



25,763

25,763


(7)
3/23/2010
1000 Redstone Gateway (O)
Huntsville, AL
10,035


20,533

5


20,538

20,538

(3,492
)
2013
3/23/2010
1100 Redstone Gateway (O)
Huntsville, AL
10,598


19,593

6


19,599

19,599

(2,926
)
2014
3/23/2010
114 National Business Parkway (O)
Annapolis Junction, MD

364

3,109

223

364

3,332

3,696

(1,491
)
2002
6/30/2000
1200 Redstone Gateway (O)
Huntsville, AL
12,242


22,389



22,389

22,389

(3,384
)
2013
3/23/2010
1201 M Street (O)
Washington, DC


49,785

8,879


58,664

58,664

(16,924
)
2001
9/28/2010
1201 Winterson Road (O)
Linthicum, MD

2,130

17,007

669

2,130

17,676

19,806

(5,073
)
1985/2017
4/30/1998
1220 12th Street, SE (O)
Washington, DC


42,464

8,093


50,557

50,557

(15,746
)
2003
9/28/2010
1243 Winterson Road (L)
Linthicum, MD

630



630


630


(6)
12/19/2001
131 National Business Parkway (O)
Annapolis Junction, MD

1,906

7,623

4,120

1,906

11,743

13,649

(7,074
)
1990
9/28/1998
132 National Business Parkway (O)
Annapolis Junction, MD

2,917

12,259

4,669

2,917

16,928

19,845

(9,958
)
2000
5/28/1999
133 National Business Parkway (O)
Annapolis Junction, MD

2,517

10,068

5,607

2,517

15,675

18,192

(10,005
)
1997
9/28/1998
134 National Business Parkway (O)
Annapolis Junction, MD

3,684

7,517

4,952

3,684

12,469

16,153

(6,727
)
1999
11/13/1998
1340 Ashton Road (O)
Hanover, MD

905

3,620

1,821

905

5,441

6,346

(3,100
)
1989
4/28/1999
13450 Sunrise Valley Road (O)
Herndon, VA

1,386

5,576

4,591

1,386

10,167

11,553

(5,741
)
1998
7/25/2003
13454 Sunrise Valley Road (O)
Herndon, VA

2,847

11,986

8,670

2,847

20,656

23,503

(11,121
)
1998
7/25/2003
135 National Business Parkway (O)
Annapolis Junction, MD

2,484

9,750

6,196

2,484

15,946

18,430

(9,584
)
1998
12/30/1998
1362 Mellon Road (O)
Hanover, MD

950

3,864

271

950

4,135

5,085

(578
)
2006
2/10/2006
13857 McLearen Road (O)
Herndon, VA

3,507

30,177

4,142

3,507

34,319

37,826

(11,745
)
2007
7/11/2012
140 National Business Parkway (O)
Annapolis Junction, MD

3,407

24,167

1,734

3,407

25,901

29,308

(10,247
)
2003
12/31/2003
141 National Business Parkway (O)
Annapolis Junction, MD

2,398

9,538

4,828

2,398

14,366

16,764

(8,605
)
1990
9/28/1998
14280 Park Meadow Drive (O)
Chantilly, VA

3,731

15,953

4,809

3,731

20,762

24,493

(8,630
)
1999
9/29/2004
1460 Dorsey Road (L)
Hanover, MD

1,577

75


1,577

75

1,652


(6)
2/28/2006
14840 Conference Center Drive (O)
Chantilly, VA

1,572

8,175

5,060

1,572

13,235

14,807

(6,626
)
2000
7/25/2003
14850 Conference Center Drive (O)
Chantilly, VA

1,615

8,358

3,781

1,615

12,139

13,754

(6,788
)
2000
7/25/2003
14900 Conference Center Drive (O)
Chantilly, VA

3,436

14,402

7,880

3,436

22,282

25,718

(12,059
)
1999
7/25/2003
1501 South Clinton Street (O)
Baltimore, MD

27,964

51,990

18,470

27,964

70,460

98,424

(25,079
)
2006
10/27/2009
15049 Conference Center Drive (O)
Chantilly, VA

4,415

20,365

16,525

4,415

36,890

41,305

(15,930
)
1997
8/14/2002
15059 Conference Center Drive (O)
Chantilly, VA

5,753

13,615

4,190

5,753

17,805

23,558

(9,374
)
2000
8/14/2002
1550 West Nursery Road (O)
Linthicum, MD

14,071

16,930


14,071

16,930

31,001

(5,942
)
2009
10/28/2009
1560 West Nursery Road (O)
Linthicum, MD

1,441

113


1,441

113

1,554

(16
)
2014
10/28/2009
1610 West Nursery Road (O)
Linthicum, MD

259

246


259

246

505

(17
)
2016
4/30/1998
 
 
 
Initial Cost
 
Gross Amounts Carried
At Close of Period
 
 
 
Property (Type) (1)
Location
Encumbrances (2)
Land
Building and Land Improvements
Costs Capitalized Subsequent to Acquisition
Land
Building and Land Improvements
Total (3)
Accumulated Depreciation (4)
Year Built or Renovated
Date Acquired (5)
1616 West Nursery Road (O)
Linthicum, MD

393

3,323


393

3,323

3,716

(183
)
2017
4/30/1998
1622 West Nursery Road (O)
Linthicum, MD

393

2,542


393

2,542

2,935

(180
)
2016
4/30/1998
16442 Commerce Drive (O)
Dahlgren, VA

613

2,582

960

613

3,542

4,155

(1,735
)
2002
12/21/2004
16480 Commerce Drive (O)
Dahlgren, VA

1,856

7,425

1,894

1,856

9,319

11,175

(3,928
)
2000
12/28/2004
16501 Commerce Drive (O)
Dahlgren, VA

522

2,090

1,033

522

3,123

3,645

(1,255
)
2002
12/21/2004
16539 Commerce Drive (O)
Dahlgren, VA

688

2,860

2,188

688

5,048

5,736

(2,692
)
1990
12/21/2004
16541 Commerce Drive (O)
Dahlgren, VA

773

3,094

2,367

773

5,461

6,234

(2,408
)
1996
12/21/2004
16543 Commerce Drive (O)
Dahlgren, VA

436

1,742

802

436

2,544

2,980

(1,131
)
2002
12/21/2004
1751 Pinnacle Drive (O)
McLean, VA

10,486

42,339

33,115

10,486

75,454

85,940

(35,552
)
1989/1995
9/23/2004
1753 Pinnacle Drive (O)
McLean, VA

8,275

34,353

22,407

8,275

56,760

65,035

(22,899
)
1976/2004
9/23/2004
206 Research Boulevard (O)
Aberdeen, MD








2012
9/14/2007
209 Research Boulevard (O)
Aberdeen, MD

134

1,711

276

134

1,987

2,121

(487
)
2010
9/14/2007
210 Research Boulevard (O)
Aberdeen, MD

113

1,402

204

113

1,606

1,719

(400
)
2010
9/14/2007
2100 L Street (O)
Washington, DC
47,068

19,024

60,822


19,024

60,822

79,846


(7)
8/11/2015
2100 Rideout Road (O)
Huntsville, AL


6,951

2,881


9,832

9,832

(1,304
)
2016
3/23/2010
22289 Exploration Drive (O)
Lexington Park, MD

1,422

5,719

1,924

1,422

7,643

9,065

(3,869
)
2000
3/24/2004
22299 Exploration Drive (O)
Lexington Park, MD

1,362

5,791

2,911

1,362

8,702

10,064

(4,357
)
1998
3/24/2004
22300 Exploration Drive (O)
Lexington Park, MD

1,094

5,038

2,729

1,094

7,767

8,861

(3,115
)
1997
11/9/2004
22309 Exploration Drive (O)
Lexington Park, MD

2,243

10,419

7,986

2,243

18,405

20,648

(7,511
)
1984/1997
3/24/2004
23535 Cottonwood Parkway (O)
California, MD

692

3,051

648

692

3,699

4,391

(1,861
)
1984
3/24/2004
250 W Pratt St (O)
Baltimore, MD

8,057

34,588

14,833

8,057

49,421

57,478

(12,629
)
1985
3/19/2015
2500 Riva Road (O)
Annapolis, MD

2,791

12,146

1

2,791

12,147

14,938

(12,146
)
2000
3/4/2003
2600 Park Tower Drive (O)
Vienna, VA

20,293

34,443

1,859

20,293

36,302

56,595

(5,932
)
1999
4/15/2015
2691 Technology Drive (O)
Annapolis Junction, MD

2,098

17,334

5,565

2,098

22,899

24,997

(11,271
)
2005
5/26/2000
2701 Technology Drive (O)
Annapolis Junction, MD

1,737

15,266

5,530

1,737

20,796

22,533

(11,505
)
2001
5/26/2000
2711 Technology Drive (O)
Annapolis Junction, MD

2,251

21,611

2,847

2,251

24,458

26,709

(12,920
)
2002
11/13/2000
2720 Technology Drive (O)
Annapolis Junction, MD

3,863

29,272

2,167

3,863

31,439

35,302

(12,354
)
2004
1/31/2002
2721 Technology Drive (O)
Annapolis Junction, MD

4,611

14,597

3,205

4,611

17,802

22,413

(9,741
)
2000
10/21/1999
2730 Hercules Road (O)
Annapolis Junction, MD

8,737

31,612

8,709

8,737

40,321

49,058

(21,502
)
1990
9/28/1998
30 Light Street (O)
Baltimore, MD
3,998


12,101

867


12,968

12,968

(1,503
)
2009
8/7/2015
300 Sentinel Drive (O)
Annapolis Junction, MD

1,517

59,165

1,756

1,517

60,921

62,438

(14,803
)
2009
11/14/2003
302 Sentinel Drive (O)
Annapolis Junction, MD

2,648

29,687

901

2,648

30,588

33,236

(9,224
)
2007
11/14/2003
304 Sentinel Drive (O)
Annapolis Junction, MD

3,411

24,917

1,966

3,411

26,883

30,294

(9,807
)
2005
11/14/2003
306 Sentinel Drive (O)
Annapolis Junction, MD

3,260

22,592

2,487

3,260

25,079

28,339

(8,174
)
2006
11/14/2003
308 Sentinel Drive (O)
Annapolis Junction, MD

1,422

26,208

2,354

1,422

28,562

29,984

(6,123
)
2010
11/14/2003
310 Sentinel Way (O)
Annapolis Junction, MD

2,372

41,160


2,372

41,160

43,532

(3,968
)
2016
11/14/2003
310 The Bridge Street (O)
Huntsville, AL

261

26,531

4,916

261

31,447

31,708

(9,962
)
2009
8/9/2011
312 Sentinel Way (O)
Annapolis Junction, MD

3,138

27,797


3,138

27,797

30,935

(3,694
)
2014
11/14/2003
 
 
 
Initial Cost
 
Gross Amounts Carried
At Close of Period
 
 
 
Property (Type) (1)
Location
Encumbrances (2)
Land
Building and Land Improvements
Costs Capitalized Subsequent to Acquisition
Land
Building and Land Improvements
Total (3)
Accumulated Depreciation (4)
Year Built or Renovated
Date Acquired (5)
314 Sentinel Way (O)
Annapolis Junction, MD

1,254

7,741


1,254

7,741

8,995

(1,014
)
2008
11/14/2003
316 Sentinel Way (O)
Annapolis Junction, MD

2,748

38,156

157

2,748

38,313

41,061

(7,446
)
2011
11/14/2003
318 Sentinel Way (O)
Annapolis Junction, MD

2,185

28,426

560

2,185

28,986

31,171

(9,949
)
2005
11/14/2003
320 Sentinel Way (O)
Annapolis Junction, MD

2,067

21,623

65

2,067

21,688

23,755

(6,482
)
2007
11/14/2003
322 Sentinel Way (O)
Annapolis Junction, MD

2,605

22,827

1,900

2,605

24,727

27,332

(7,808
)
2006
11/14/2003
324 Sentinel Way (O)
Annapolis Junction, MD

1,656

23,018


1,656

23,018

24,674

(5,380
)
2010
6/29/2006
4000 Market Street (O)
Huntsville, AL


9,187



9,187

9,187

(162
)
2018
3/23/2010
410 National Business Parkway (O)
Annapolis Junction, MD

1,831

23,257

1,705

1,831

24,962

26,793

(4,101
)
2012
6/29/2006
4100 Market Street (O)
Huntsville, AL


7,998



7,998

7,998

(102
)
2019
3/23/2010
420 National Business Parkway (O)
Annapolis Junction, MD

2,370

27,751

132

2,370

27,883

30,253

(4,046
)
2013
6/29/2006
430 National Business Parkway (O)
Annapolis Junction, MD

1,852

21,563

396

1,852

21,959

23,811

(4,265
)
2011
6/29/2006
44408 Pecan Court (O)
California, MD

817

1,583

1,706

817

3,289

4,106

(1,374
)
1986
3/24/2004
44414 Pecan Court (O)
California, MD

405

1,619

1,071

405

2,690

3,095

(1,328
)
1986
3/24/2004
44417 Pecan Court (O)
California, MD

434

3,822

180

434

4,002

4,436

(1,815
)
1989/2015
3/24/2004
44420 Pecan Court (O)
California, MD

344

890

291

344

1,181

1,525

(486
)
1989
11/9/2004
44425 Pecan Court (O)
California, MD

1,309

3,506

2,217

1,309

5,723

7,032

(3,068
)
1997
5/5/2004
45310 Abell House Lane (O)
California, MD

2,272

13,808

533

2,272

14,341

16,613

(2,848
)
2011
8/30/2010
4600 River Road (O)
College Park, MD

30

8,345


30

8,345

8,375


(7)
1/29/2008
46579 Expedition Drive (O)
Lexington Park, MD

1,406

5,796

2,145

1,406

7,941

9,347

(3,931
)
2002
3/24/2004
46591 Expedition Drive (O)
Lexington Park, MD

1,200

7,199

2,112

1,200

9,311

10,511

(3,443
)
2005
3/24/2004
4851 Stonecroft Boulevard (O)
Chantilly, VA

1,878

11,558

38

1,878

11,596

13,474

(4,407
)
2004
8/14/2002
540 National Business Parkway (O)
Annapolis Junction, MD

2,035

31,249


2,035

31,249

33,284

(1,723
)
2017
6/29/2006
5520 Research Park Drive (O)
Catonsville, MD


20,072

1,530


21,602

21,602

(5,549
)
2009
4/4/2006
5522 Research Park Drive (O)
Catonsville, MD


4,550

836


5,386

5,386

(1,456
)
2007
3/8/2006
5801 University Research Court (O)
College Park, MD
11,200


17,429



17,429

17,429

(706
)
2018
1/29/2008
5825 University Research Court (O)
College Park, MD
20,450


22,771

1,329


24,100

24,100

(6,399
)
2008
1/29/2008
5850 University Research Court (O)
College Park, MD
21,636


31,906

405


32,311

32,311

(8,025
)
2008
1/29/2008
6000 Redstone Gateway (O)
Huntsville, AL


508



508

508


(7)
3/23/2010
6700 Alexander Bell Drive (O)
Columbia, MD

1,755

7,019

8,186

1,755

15,205

16,960

(8,193
)
1988
5/14/2001
6708 Alexander Bell Drive (O)
Columbia, MD

897

12,644

1,618

897

14,262

15,159

(4,393
)
1988/2016
5/14/2001
6711 Columbia Gateway Drive (O)
Columbia, MD

2,683

23,239

1,557

2,683

24,796

27,479

(8,399
)
2006-2007
9/28/2000
6716 Alexander Bell Drive (O)
Columbia, MD

1,242

4,969

4,544

1,242

9,513

10,755

(5,829
)
1990
12/31/1998
6721 Columbia Gateway Drive (O)
Columbia, MD

1,753

34,090

131

1,753

34,221

35,974

(9,234
)
2009
9/28/2000
6724 Alexander Bell Drive (O)
Columbia, MD

449

5,039

2,165

449

7,204

7,653

(3,200
)
2001
5/14/2001
6731 Columbia Gateway Drive (O)
Columbia, MD

2,807

19,098

5,340

2,807

24,438

27,245

(12,123
)
2002
3/29/2000
6740 Alexander Bell Drive (O)
Columbia, MD

1,424

5,696

3,441

1,424

9,137

10,561

(6,055
)
1992
12/31/1998
6741 Columbia Gateway Drive (O)
Columbia, MD

675

1,711

169

675

1,880

2,555

(580
)
2008
9/28/2000
6750 Alexander Bell Drive (O)
Columbia, MD

1,263

12,461

4,976

1,263

17,437

18,700

(10,076
)
2001
12/31/1998
 
 
 
Initial Cost
 
Gross Amounts Carried
At Close of Period
 
 
 
Property (Type) (1)
Location
Encumbrances (2)
Land
Building and Land Improvements
Costs Capitalized Subsequent to Acquisition
Land
Building and Land Improvements
Total (3)
Accumulated Depreciation (4)
Year Built or Renovated
Date Acquired (5)
6760 Alexander Bell Drive (O)
Columbia, MD

890

3,561

3,901

890

7,462

8,352

(4,585
)
1991
12/31/1998
6940 Columbia Gateway Drive (O)
Columbia, MD

3,545

9,916

7,974

3,545

17,890

21,435

(9,882
)
1999
11/13/1998
6950 Columbia Gateway Drive (O)
Columbia, MD

3,596

26,846

3,220

3,596

30,066

33,662

(11,307
)
1998/2019 (7)
10/22/1998
7000 Columbia Gateway Drive (O)
Columbia, MD

3,131

12,103

7,443

3,131

19,546

22,677

(8,231
)
1999
5/31/2002
7005 Columbia Gateway Drive (L)
Columbia, MD

3,036

747


3,036

747

3,783


(6)
6/26/2014
7015 Albert Einstein Drive (O)
Columbia, MD

2,058

6,093

3,319

2,058

9,412

11,470

(4,165
)
1999
12/1/2005
7061 Columbia Gateway Drive (O)
Columbia, MD

729

3,094

2,379

729

5,473

6,202

(3,215
)
2000
8/30/2001
7063 Columbia Gateway Drive (O)
Columbia, MD

902

3,684

3,416

902

7,100

8,002

(4,004
)
2000
8/30/2001
7065 Columbia Gateway Drive (O)
Columbia, MD

919

3,763

3,095

919

6,858

7,777

(4,428
)
2000
8/30/2001
7067 Columbia Gateway Drive (O)
Columbia, MD

1,829

11,823

5,116

1,829

16,939

18,768

(8,069
)
2001
8/30/2001
7125 Columbia Gateway Drive (O)
Columbia, MD

20,487

46,994

21,053

20,487

68,047

88,534

(25,351
)
1973/1999
6/29/2006
7130 Columbia Gateway Drive (O)
Columbia, MD

1,350

4,359

2,859

1,350

7,218

8,568

(3,621
)
1989
9/19/2005
7134 Columbia Gateway Drive (O)
Columbia, MD

704

4,700

436

704

5,136

5,840

(1,666
)
1990/2016
9/19/2005
7138 Columbia Gateway Drive (O)
Columbia, MD

1,104

3,518

2,843

1,104

6,361

7,465

(3,864
)
1990
9/19/2005
7142 Columbia Gateway Drive (O)
Columbia, MD

1,342

7,148

2,608

1,342

9,756

11,098

(3,516
)
1994/2018
9/19/2005
7150 Columbia Gateway Drive (O)
Columbia, MD

1,032

3,429

813

1,032

4,242

5,274

(1,673
)
1991
9/19/2005
7150 Riverwood Drive (O)
Columbia, MD

1,821

4,388

1,854

1,821

6,242

8,063

(2,799
)
2000
1/10/2007
7160 Riverwood Drive (O)
Columbia, MD

2,732

7,006

3,124

2,732

10,130

12,862

(4,336
)
2000
1/10/2007
7170 Riverwood Drive (O)
Columbia, MD

1,283

3,096

2,243

1,283

5,339

6,622

(2,295
)
2000
1/10/2007
7175 Riverwood Drive (O)
Columbia, MD

1,788

7,269


1,788

7,269

9,057

(1,116
)
1996/2013
7/27/2005
7200 Redstone Gateway (O)
Huntsville, AL
5,932


8,348

88


8,436

8,436

(1,175
)
2013
3/23/2010
7200 Riverwood Drive (O)
Columbia, MD

4,089

22,630

4,538

4,089

27,168

31,257

(11,823
)
1986
10/13/1998
7205 Riverwood Drive (O)
Columbia, MD

1,367

21,419


1,367

21,419

22,786

(3,452
)
2013
7/27/2005
7272 Park Circle Drive (O)
Hanover, MD

1,479

6,300

4,578

1,479

10,878

12,357

(4,955
)
1991/1996
1/10/2007
7318 Parkway Drive (O)
Hanover, MD

972

3,888

1,319

972

5,207

6,179

(2,740
)
1984
4/16/1999
7400 Redstone Gateway (O)
Huntsville, AL
6,506


9,223

82


9,305

9,305

(1,044
)
2015
3/23/2010
7467 Ridge Road (O)
Hanover, MD

1,565

3,116

4,954

1,565

8,070

9,635

(3,456
)
1990
4/28/1999
7500 Advanced Gateway (O)
Huntsville, AL


7,195



7,195

7,195


(7)
3/23/2010
7600 Advanced Gateway (O)
Huntsville, AL


2,543



2,543

2,543


(7)
3/23/2010
7740 Milestone Parkway (O)
Hanover, MD
17,352

3,825

34,176

1,009

3,825

35,185

39,010

(8,311
)
2009
7/2/2007
7770 Backlick Road (O)
Springfield, VA

6,387

76,663

283

6,387

76,946

83,333

(12,966
)
2012
3/10/2010
7880 Milestone Parkway (O)
Hanover, MD

4,857

25,913

247

4,857

26,160

31,017

(2,695
)
2015
9/17/2013
8000 Rideout Road (O)
Huntsville, AL


2,564



2,564

2,564


(7)
3/23/2010
8600 Advanced Gateway (O)
Huntsville, AL


4,931



4,931

4,931


(7)
3/23/2010
8621 Robert Fulton Drive (O)
Columbia, MD

2,317

12,642

6,428

2,317

19,070

21,387

(5,755
)
2005-2006
6/10/2005
8661 Robert Fulton Drive (O)
Columbia, MD

1,510

3,764

2,956

1,510

6,720

8,230

(3,240
)
2002
12/30/2003
8671 Robert Fulton Drive (O)
Columbia, MD

1,718

4,280

4,306

1,718

8,586

10,304

(4,366
)
2002
12/30/2003
870 Elkridge Landing Road (O)
Linthicum, MD

2,003

9,442

9,333

2,003

18,775

20,778

(10,533
)
1981
8/3/2001
 
 
 
Initial Cost
 
Gross Amounts Carried
At Close of Period
 
 
 
Property (Type) (1)
Location
Encumbrances (2)
Land
Building and Land Improvements
Costs Capitalized Subsequent to Acquisition
Land
Building and Land Improvements
Total (3)
Accumulated Depreciation (4)
Year Built or Renovated
Date Acquired (5)
8800 Redstone Gateway (O)
Huntsville, AL


17,730



17,730

17,730

(58
)
2019
3/23/2010
891 Elkridge Landing Road (O)
Linthicum, MD

1,165

4,772

3,483

1,165

8,255

9,420

(4,921
)
1984
7/2/2001
901 Elkridge Landing Road (O)
Linthicum, MD

1,156

4,437

3,864

1,156

8,301

9,457

(4,321
)
1984
7/2/2001
911 Elkridge Landing Road (O)
Linthicum, MD

1,215

4,861

2,970

1,215

7,831

9,046

(4,481
)
1985
4/30/1998
938 Elkridge Landing Road (O)
Linthicum, MD

922

4,748

1,516

922

6,264

7,186

(3,022
)
1984
7/2/2001
939 Elkridge Landing Road (O)
Linthicum, MD

939

3,756

4,438

939

8,194

9,133

(5,028
)
1983
4/30/1998
9651 Hornbaker Road (D)
Manassas, VA

6,050

250,355

5,582

6,050

255,937

261,987

(61,123
)
2010
9/14/2010
Arundel Preserve (L)
Hanover, MD

13,352

9,683


13,352

9,683

23,035


(6)
7/2/2007
BLC 1 (O)
Northern Virginia

12,026

18,175


12,026

18,175

30,201

(696
)
2018
12/28/2017
BLC 2 (O)
Northern Virginia

12,026

17,929


12,026

17,929

29,955

(655
)
2018
12/28/2017
Canton Crossing Land (L)
Baltimore, MD

17,285

8,322


17,285

8,322

25,607


(6)
10/27/2009
Canton Crossing Util Distr Ctr (O)
Baltimore, MD

6,100

10,450

1,727

6,100

12,177

18,277

(5,651
)
2006
10/27/2009
Columbia Gateway - Southridge (L)
Columbia, MD

6,387

3,722


6,387

3,722

10,109


(6)
9/20/2004
Dahlgren Technology Center (L)
Dahlgren, VA

978

178


978

178

1,156


(6)
3/16/2005
Expedition VII (L)
Lexington Park, MD

705

730


705

730

1,435


(6)
3/24/2004
IN 1 (O)
Northern Virginia

1,815

15,955


1,815

15,955

17,770

(336
)
2019
8/31/2016
IN 2 (O)
Northern Virginia

2,627

28,527


2,627

28,527

31,154

(364
)
2019
8/31/2016
M Square Research Park (L)
College Park, MD


1,632



1,632

1,632


(6)
1/29/2008
MP 1 (O)
Northern Virginia

9,426

29,508


9,426

29,508

38,934

(490
)
2019
11/20/2017
MP 2 (O)
Northern Virginia

9,426

28,843


9,426

28,843

38,269

(685
)
2018
11/20/2017
MR Land (L)
Northern Virginia

9,038

407


9,038

407

9,445


(6)
11/8/2018
National Business Park North (L)
Annapolis Junction, MD

28,843

46,879


28,843

46,879

75,722


(6)
6/29/2006
North Gate Business Park (L)
Aberdeen, MD

1,755

5


1,755

5

1,760


(6)
9/14/2007
Northwest Crossroads (L)
San Antonio, TX

7,430

847


7,430

847

8,277


(6)
1/20/2006
NOVA Office A (O) (8)
Chantilly, VA

2,096

46,849


2,096

46,849

48,945

(5,751
)
2015
7/18/2002
NOVA Office B (O) (8)
Chantilly, VA

739

38,376


739

38,376

39,115

(2,754
)
2016
7/18/2002
NOVA Office C (O) (8)
Chantilly, VA

5,604

9,191


5,604

9,191

14,795


(7)
7/18/2002
NOVA Office D (O) (8)
Chantilly, VA

6,587

40,518


6,587

40,518

47,105

(2,433
)
2017
7/2/2013
Oak Grove A (O)
Northern Virginia

12,866

16,554


12,866

16,554

29,420


(7)
11/1/2018
Oak Grove B (O)
Northern Virginia

12,866

26,518


12,866

26,518

39,384


2019
11/1/2018
Oak Grove Phase II (L)
Northern Virginia

23,483

8,942


23,483

8,942

32,425


(6)
11/1/2018
Old Annapolis Road (O)
Columbia, MD

1,637

5,500

6,710

1,637

12,210

13,847

(4,380
)
1974/1985
12/14/2000
P2 A (O)
Northern Virginia

19,514

27,096


19,514

27,096

46,610


(7)
5/2/2019
P2 B (O)
Northern Virginia

25,621

6,494


25,621

6,494

32,115


(7)
5/2/2019
P2 C (O)
Northern Virginia

17,137

1,591


17,137

1,591

18,728


(7)
5/2/2019
Paragon Park (L)
Northern Virginia


78



78

78


(6)
5/8/2017
Patriot Ridge (L)
Springfield, VA

18,517

14,530


18,517

14,530

33,047


(6)
3/10/2010
Project EX (O) (9)
Confidential-USA

8,959

16,525


8,959

16,525

25,484

(279
)
2018
7/16/2008
 
 
 
Initial Cost
 
Gross Amounts Carried
At Close of Period
 
 
 
Property (Type) (1)
Location
Encumbrances (2)
Land
Building and Land Improvements
Costs Capitalized Subsequent to Acquisition
Land
Building and Land Improvements
Total (3)
Accumulated Depreciation (4)
Year Built or Renovated
Date Acquired (5)
Redstone Gateway (L)
Huntsville, AL


21,472



21,472

21,472


(6)
3/23/2010
Sentry Gateway (L)
San Antonio, TX

4,052

1,833


4,052

1,833

5,885


(6)
3/30/2005
Sentry Gateway - T (O)
San Antonio, TX

14,020

38,804

13

14,020

38,817

52,837

(12,502
)
1982/2008
3/30/2005
Sentry Gateway - V (O)
San Antonio, TX


1,066



1,066

1,066

(295
)
2007
3/30/2005
Sentry Gateway - W (O)
San Antonio, TX


1,884

71


1,955

1,955

(496
)
2009
3/30/2005
Sentry Gateway - X (O)
San Antonio, TX

1,964

21,178


1,964

21,178

23,142

(4,846
)
2010
1/20/2006
Sentry Gateway - Y (O)
San Antonio, TX

1,964

21,298


1,964

21,298

23,262

(4,875
)
2010
1/20/2006
Sentry Gateway - Z (O)
San Antonio, TX

1,964

30,573


1,964

30,573

32,537

(3,673
)
2015
6/14/2005
SP Manassas (L)
Manassas, VA

8,156

94


8,156

94

8,250


(6)
2/6/2015
Westfields - Park Center (L)
Chantilly, VA

10,815

6,019


10,815

6,019

16,834


(6)
7/2/2013
Westfields Corporate Center (L)
Chantilly, VA

7,141

1,576


7,141

1,576

8,717


(6)
1/27/2005
Other Developments, including intercompany eliminations (V)
Various


530

258


788

788

(79
)
Various
Various
 
 
$
214,546

$
735,948

$
3,124,706

$
487,352

$
735,948

$
3,612,058

$
4,348,006

$
(1,007,120
)
 
 
(1)
A legend for the Property Type follows: (O) = Office or Data Center Shell Property; (L) = Land held or pre-development; (D) = Wholesale Data Center; and (V) = Various.
(2)
Excludes our Revolving Credit Facility of $177.0 million, term loan facilities of $248.7 million, unsecured senior notes of $1.2 billion, unsecured notes payable of $1.0 million, and deferred financing costs, net of premiums, on the remaining loans of $3.1 million.
(3)
The aggregate cost of these assets for Federal income tax purposes was approximately $3.4 billion as of December 31, 2019.
(4)
The estimated lives over which depreciation is recognized follow: Building and land improvements: 10-40 years; and tenant improvements: related lease terms.
(5)
The acquisition date of multi-parcel properties reflects the date of the earliest parcel acquisition. The acquisition date of properties owned through real estate joint ventures reflects the date of the formation of the joint venture.
(6)
Held as of December 31, 2019.
(7)
Under development or redevelopment as of December 31, 2019.
(8)
The carrying amounts of these properties exclude allocated costs of the garage being constructed to support the properties.
(9)
This property represents land under a long-term contract.

The following table summarizes our changes in cost of properties for the years ended December 31, 2019, 2018 and 2017 (in thousands):
 
 
 
 
 
 
2019
 
2018
 
2017
 
Beginning balance
 
 
$
4,148,529

 
$
3,980,813

 
$
3,874,715

 
Improvements and other additions
 
 
480,418

 
224,524

 
259,548

 
Sales (1)
 
 
(242,497
)
 
(53,547
)
 
(138,216
)
 
Impairments
 
 
(329
)
 
(2,493
)
 
(15,116
)
 
Other dispositions
 
 
(340
)
 
(768
)
 
(118
)
 
Reclassification to right-of use asset
 
 
(37,775
)
 

 

 
Ending balance
 
 
$
4,348,006

 
$
4,148,529

 
$
3,980,813

 
 
 
 
 
 
 
 
 
 
 
The following table summarizes our changes in accumulated depreciation for the same time periods (in thousands):
 
 
 
 
 
 
2019
 
2018
 
2017
 
Beginning balance
 
 
$
897,903

 
$
801,038

 
$
715,951

 
Depreciation expense
 
 
117,973

 
112,610

 
107,772

 
Sales (1)
 
 
(8,416
)
 
(14,845
)
 
(22,567
)
 
Impairments
 
 

 
(132
)
 

 
Other dispositions
 
 
(340
)
 
(768
)
 
(118
)
 
Ending balance
 
 
$
1,007,120

 
$
897,903

 
$
801,038

 
 
 
 
 
 
 
 
 
 
 

(1)
Includes our sale, through a series of transactions, of ownership interests in data center shells through a newly-formed unconsolidated real estate joint venture in 2019, as described in Note 4 to our consolidated financial statements.