Schedule III - Real Estate and Accumulated Depreciation

12 Months Ended

Dec. 31, 2012

Real Estate and Accumulated Depreciation Disclosure [Abstract]

Real Estate and Accumulated Depreciation Disclosure [Text Block]



								Gross Amount at Which Carried
				Initial Cost				December 31, 2012
Property Name	City	State	Encumberances at December 31, 2012 (a)	Land	Building and Improvements	Net Improvements (Retirements) Since Acquisition		Land	Building and Improvements	Total (b)	Accumulated Depreciation at December 31, 2012 (c)	Year of Construction	Year Acquired	Depreciable Life
PENNSYLVANIA SUBURBS
400 Berwyn Park	Berwyn	PA	—	2,657	4,462	13,975		2,657	18,438	21,094	5,183	1999	1999	40
300 Berwyn Park	Berwyn	PA	—	2,206	13,422	4,080		2,206	17,502	19,708	7,213	1989	1997	40
1050 Westlakes Drive	Berwyn	PA	—	2,611	10,445	5,046		2,611	15,491	18,102	6,542	1984	1999	40
1200 Swedesford Road	Berwyn	PA	—	2,595	11,809	3,472		2,595	15,281	17,876	4,483	1994	2001	40
200 Berwyn Park	Berwyn	PA	—	1,533	9,460	1,734		1,533	11,193	12,727	4,829	1987	1997	40
1180 Swedesford Road	Berwyn	PA	—	2,086	8,342	1,653		2,086	9,995	12,081	2,896	1987	2001	40
100 Berwyn Park	Berwyn	PA	—	1,180	7,290	2,019		1,180	9,309	10,489	3,977	1986	1997	40
1160 Swedesford Road	Berwyn	PA	—	1,781	7,124	1,006		1,781	8,130	9,911	2,922	1986	2001	40
1100 Cassett Road	Berwyn	PA	—	1,695	6,779	102		1,695	6,882	8,576	1,999	1997	2001	40
980 Harvest Drive	Blue Bell	PA	—	3,304	16,960	(541	)	3,304	16,420	19,723	5,838	1988	2002	40
925 Harvest Drive	Blue Bell	PA	—	1,671	6,606	771		1,671	7,377	9,048	3,071	1990	1998	40
920 Harvest Drive	Blue Bell	PA	—	1,209	6,595	(310	)	1,208	6,286	7,494	2,876	1990	1998	40
426 Lancaster Avenue	Devon	PA	—	1,689	6,756	396		1,689	7,152	8,841	3,067	1990	1998	40
52 Swedesford Square	East Whiteland Twp.	PA	—	4,241	16,579	1,676		4,241	18,255	22,496	6,912	1988	1998	40
100 Arrandale Boulevard	Exton	PA	—	970	3,878	—		970	3,878	4,848	1,139	1997	2001	40
One Progress Drive	Horsham	PA	—	1,399	5,629	5,107		1,399	10,736	12,135	3,301	1986	1996	40
500 Enterprise Drive	Horsham	PA	—	1,303	5,188	3,229		1,303	8,416	9,720	3,071	1990	1996	40
640 Freedom Business Center	King Of Prussia	PA	—	4,222	16,891	3,338		4,222	20,229	24,451	8,279	1991	1998	40
555 Croton Road	King of Prussia	PA	—	4,486	17,943	1,325		4,486	19,268	23,754	5,807	1999	2001	40
630 Allendale Road	King of Prussia	PA	—	2,836	4,028	12,025		2,636	16,253	18,889	4,769	2000	2000	40
620 Freedom Business Center	King Of Prussia	PA	—	2,770	11,014	3,415		2,770	14,430	17,199	6,750	1986	1998	40
1000 First Avenue	King Of Prussia	PA	—	2,772	10,936	3,230		2,772	14,166	16,938	6,046	1980	1998	40
1060 First Avenue	King Of Prussia	PA	—	2,712	10,953	2,459		2,712	13,412	16,124	5,510	1987	1998	40
630 Freedom Business Center	King Of Prussia	PA	—	2,773	11,144	1,787		2,773	12,931	15,704	5,365	1989	1998	40
1040 First Avenue	King Of Prussia	PA	—	2,860	11,282	839		2,860	12,121	14,981	4,608	1985	1998	40
1020 First Avenue	King Of Prussia	PA	—	2,168	8,576	3,885		2,168	12,461	14,629	5,426	1984	1998	40
610 Freedom Business Center	King Of Prussia	PA	—	2,017	8,070	1,730		2,017	9,800	11,817	3,911	1985	1998	40
650 Park Avenue	King Of Prussia	PA	—	1,916	4,378	2,192		1,916	6,570	8,486	3,122	1968	1998	40
500 North Gulph Road	King Of Prussia	PA	—	1,303	5,201	1,652		1,303	6,853	8,156	3,088	1979	1996	40
741 First Avenue	King Of Prussia	PA	—	1,287	5,151	12		1,287	5,162	6,450	2,117	1966	1998	40
875 First Avenue	King Of Prussia	PA	—	618	2,473	3,239		618	5,712	6,330	2,688	1966	1998	40
751-761 Fifth Avenue	King Of Prussia	PA	—	1,097	4,391	31		1,097	4,422	5,519	1,813	1967	1998	40
600 Park Avenue	King Of Prussia	PA	—	1,012	4,048	385		1,012	4,434	5,445	1,804	1964	1998	40
620 Allendale Road	King Of Prussia	PA	—	1,020	3,839	503		1,020	4,342	5,362	1,776	1961	1998	40



								Gross Amount at Which Carried
				Initial Cost				December 31, 2012
Property Name	City	State	Encumberances at December 31, 2012 (a)	Land	Building and Improvements	Net Improvements (Retirements) Since Acquisition		Land	Building and Improvements	Total (b)	Accumulated Depreciation at December 31, 2012 (c)	Year of Construction	Year Acquired	Depreciable Life
660 Allendale Road	King Of Prussia	PA	—	396	948	2,898		1,085	3,156	4,242	327	2011	1998	40
640 Allendale Road	King of Prussia	PA	—	439	432	1,579		439	2,012	2,450	643	2000	2000	40
101 Lindenwood Drive	Malvern	PA	—	4,152	16,606	3,554		4,152	20,161	24,312	5,712	1988	2001	40
301 Lindenwood Drive	Malvern	PA	—	2,729	10,915	1,398		2,729	12,313	15,042	3,941	1984	2001	40
300 Lindenwood Drive	Malvern	PA	—	848	3,394	1,266		849	4,659	5,508	1,679	1991	2001	40
1700 Paoli Pike	Malvern	PA	—	458	559	3,018		488	3,547	4,035	1,091	2000	2000	40
100 Lindenwood Drive	Malvern	PA	—	473	1,892	188		473	2,080	2,553	650	1985	2001	40
200 Lindenwood Drive	Malvern	PA	—	324	1,295	339		324	1,634	1,958	468	1984	2001	40
14 Campus Boulevard	Newtown Square	PA	—	2,244	4,217	1,516		2,244	5,733	7,977	2,642	1998	1998	40
11 Campus Boulevard	Newtown Square	PA	—	1,112	4,067	740		1,112	4,807	5,919	1,760	1998	1999	40
17 Campus Boulevard	Newtown Square	PA	—	1,108	5,155	(397	)	1,108	4,758	5,866	1,311	2001	N/A	40
15 Campus Boulevard	Newtown Square	PA	—	1,164	3,896	229		1,164	4,125	5,289	1,142	2002	N/A	40
18 Campus Boulevard	Newtown Square	PA	—	787	3,312	(183	)	787	3,129	3,916	1,421	1990	1996	40
401 Plymouth Road	Plymouth Meeting	PA	—	6,198	16,131	16,100		6,199	32,230	38,429	9,259	2001	N/A	40
4000 Chemical Road	Plymouth Meeting	PA	—	4,373	24,546	4,370		4,373	28,916	33,289	5,424	2006	N/A	40
610 West Germantown Pike	Plymouth Meeting	PA	—	3,651	14,514	3,231		3,651	17,745	21,396	4,757	1987	2002	40
600 West Germantown Pike	Plymouth Meeting	PA	—	3,652	15,288	2,252		3,652	17,540	21,192	5,361	1986	2002	40
630 West Germantown Pike	Plymouth Meeting	PA	—	3,558	14,743	2,204		3,558	16,947	20,505	5,248	1988	2002	40
620 West Germantown Pike	Plymouth Meeting	PA	—	3,572	14,435	1,621		3,572	16,056	19,628	4,557	1990	2002	40
660 West Germantown Pike(d)	Plymouth Meeting	PA	—	—	—	11,097		—	11,097	11,097	112	1987	2012	30
2240/2250 Butler Pike	Plymouth Meeting	PA	—	1,104	4,627	1,216		1,104	5,843	6,947	3,075	1984	1996	40
2260 Butler Pike	Plymouth Meeting	PA	—	661	2,727	1,195		662	3,922	4,583	1,864	1984	1996	40
120 West Germantown Pike	Plymouth Meeting	PA	—	685	2,773	823		685	3,596	4,281	1,656	1984	1996	40
140 West Germantown Pike	Plymouth Meeting	PA	—	481	1,976	428		482	2,404	2,885	1,198	1984	1996	40
351 Plymouth Road	Plymouth Meeting	PA	—	1,043	555	—		1,043	555	1,598	108	N/A	2000	40
150 Radnor Chester Road	Radnor	PA	—	11,925	36,986	12,134		11,897	49,148	61,045	14,336	1983	2004	29
One Radnor Corporate Center	Radnor	PA	—	7,323	28,613	23,071		7,323	51,684	59,007	13,046	1998	2004	29
201 King of Prussia Road	Radnor	PA	—	8,956	29,811	4,762		8,949	34,579	43,529	12,390	2001	2004	25



555 Lancaster Avenue	Radnor	PA	—	8,014	16,508	18,744	8,609	34,657	43,266	11,048	1973	2004	24
Four Radnor Corporate Center	Radnor	PA	—	5,406	21,390	11,971	5,705	33,061	38,767	11,026	1995	2004	30
Five Radnor Corporate Center	Radnor	PA	—	6,506	25,525	1,906	6,578	27,359	33,937	6,368	1998	2004	38
Three Radnor Corporate Center	Radnor	PA	—	4,773	17,961	2,449	4,791	20,392	25,183	6,212	1998	2004	29
Two Radnor Corporate Center	Radnor	PA	—	3,937	15,484	2,816	3,942	18,295	22,237	5,111	1998	2004	29
130 Radnor Chester Road	Radnor	PA	—	2,573	8,338	3,531	2,567	11,875	14,442	3,322	1983	2004	25
170 Radnor Chester Road	Radnor	PA	—	2,514	8,147	3,285	2,509	11,437	13,946	3,758	1983	2004	25
101 West Elm Street	W. Conshohocken	PA	—	6,251	25,209	2,685	6,251	27,894	34,145	5,524	1999	2005	40



								Gross Amount at Which Carried
				Initial Cost				December 31, 2012
Property Name	City	State	Encumberances at December 31, 2012 (a)	Land	Building and Improvements	Net Improvements (Retirements) Since Acquisition		Land	Building and Improvements	Total (b)	Accumulated Depreciation at December 31, 2012 (c)	Year of Construction	Year Acquired	Depreciable Life
1 West Elm Street	W. Conshohocken	PA	—	3,557	14,249	1,128		3,557	15,377	18,934	3,068	1999	2005	40
595 East Swedesford Road	Wayne	PA	—	2,729	10,917	2,076		2,729	12,992	15,722	3,441	1998	2003	40
575 East Swedesford Road	Wayne	PA	—	2,178	8,712	1,888		2,178	10,600	12,778	3,017	1985	2003	40
565 East Swedesford Road	Wayne	PA	—	1,872	7,489	1,610		1,872	9,099	10,971	2,435	1984	2003	40
585 East Swedesford Road	Wayne	PA	—	1,350	5,401	358		1,350	5,758	7,109	1,536	1998	2003	40
1336 Enterprise Drive	West Goshen	PA	—	731	2,946	47		731	2,993	3,724	1,346	1989	1997	40
PHILADELPHIA CBD
2970 Market Street	Philadelphia	PA	197,111	22,430	217,763	10,375		22,430	228,138	250,568	14,793	2010	2007	40
2929 Arch Street	Philadelphia	PA	—	—	208,570	17,566		—	226,136	226,136	65,488	2005	N/A	40
130 North 18th Street	Philadelphia	PA	—	14,496	107,736	9,692		14,473	117,451	131,924	32,765	1998	2004	23
100 North 18th Street	Philadelphia	PA	89,340	16,066	100,255	5,079		16,066	105,334	121,400	29,007	1988	2004	33
1717 Arch Street	Philadelphia	PA	—	—	98,188	14,286		—	112,474	112,474	7,266	1990	2010	40
2930 Chestnut Street	Philadelphia	PA	42,303	—	76,008	2,570		—	78,578	78,578	4,576	2010	N/A	40
1900 Market Street	Philadelphia	PA	—	7,768	17,263	1		7,768	17,264	25,032	52	1981	2012	30
3020 Market Street	Philadelphia	PA	—	—	21,417	310		—	21,727	21,727	1,177	1959	2011	26
101 - 103 Juniper Street	Philadelphia	PA	—	—	14,401	283		—	14,684	14,684	578	2010	2006	40
Philadelphia Marine Center	Philadelphia	PA	—	532	2,196	3,175		628	5,275	5,903	1,943	Various	1998	40
METROPOLITAN WASHINGTON, D.C.
11720 Beltsville Drive	Beltsville	MD	—	3,831	16,661	3,916		3,904	20,504	24,408	4,991	1987	2006	46
11700 Beltsville Drive	Beltsville	MD	—	2,808	12,081	161		2,863	12,187	15,050	2,131	1981	2006	46
11710 Beltsville Drive	Beltsville	MD	—	2,278	11,100	(814	)	2,321	10,243	12,564	1,821	1987	2006	46
6600 Rockledge Drive	Bethesda	MD	—	—	37,421	11,158		—	48,579	48,579	10,486	1981	2006	50
11740 Beltsville Drive	Bethesda	MD	—	198	870	42		202	908	1,111	168	1987	2006	46
12015 Lee Jackson Memorial Highway	Fairfax	VA	—	3,770	22,895	3,042		3,842	25,866	29,707	4,930	1985	2006	42
11781 Lee Jackson Memorial Highway	Fairfax	VA	—	3,246	19,836	(886	)	3,307	18,889	22,196	3,580	1982	2006	40
4401 Fair Lakes Court	Fairfax	VA	—	1,569	11,982	224		1,599	12,177	13,776	1,925	1988	2006	52
3141 Fairview Park Drive (e)	Falls Church	VA	22,000	5,918	40,981	10,297		7,081	50,116	57,196	7,598	1988	2006	51
2340 Dulles Corner Boulevard	Herndon	VA	—	16,345	65,379	18,364		16,129	83,959	100,088	21,130	1987	2006	40
2291 Wood Oak Drive	Herndon	VA	—	8,243	52,413	13,489		8,782	65,364	74,145	9,097	1999	2006	55
2355 Dulles Corner Boulevard	Herndon	VA	—	10,365	43,876	4,585		10,365	48,462	58,826	9,474	1988	2006	40
2251 Corporate Park Drive	Herndon	VA	—	11,472	45,893	717		11,472	46,610	58,082	7,131	2000	2006	40
196/198 Van Buren Street	Herndon	VA	—	7,931	43,812	6,076		8,348	49,471	57,819	8,695	1991	2006	53
2411 Dulles Corner Park	Herndon	VA	—	7,279	46,340	3,712		7,417	49,915	57,331	9,208	1990	2006	50
2121 Cooperative Way	Herndon	VA	—	5,598	38,639	2,193		5,795	40,635	46,430	5,685	2000	2006	54
13880 Dulles Corner Lane	Herndon	VA	—	7,236	39,213	(1,132	)	7,373	37,944	45,317	5,598	1997	2006	55
2201 Cooperative Way	Herndon	VA	—	4,809	34,093	1,476		4,809	35,569	40,378	4,856	1990	2006	54



								Gross Amount at Which Carried
				Initial Cost				December 31, 2012
Property Name	City	State	Encumberances at December 31, 2012(a)	Land	Building and Improvements	Net Improvements (Retirements) Since Acquisition		Land	Building and Improvements	Total (b)	Accumulated Depreciation at December 31, 2012 (c)	Year of Construction	Year Acquired	Depreciable Life
13825 Sunrise Valley Drive	Herndon	VA	—	3,794	19,365	368		3,866	19,662	23,527	2,968	1989	2006	46
1676 International Drive	Mclean	VA	60,869	18,437	97,538	1,698		18,785	98,888	117,673	15,357	1999	2006	55
8260 Greensboro Drive	Mclean	VA	32,319	7,952	33,964	692		8,102	34,506	42,608	5,393	1980	2006	52
1880 Campus Commons Drive	Reston	VA	—	6,164	28,114	5,606		6,281	33,603	39,884	4,634	1985	2006	52
2273 Research Boulevard	Rockville	MD	—	5,167	31,110	3,334		5,237	34,374	39,611	7,419	1999	2006	45
2275 Research Boulevard	Rockville	MD	—	5,059	29,668	2,421		5,154	31,994	37,148	6,500	1990	2006	45
2277 Research Boulevard	Rockville	MD	—	4,649	26,952	1,659		4,733	28,526	33,260	5,330	1986	2006	45
1900 Gallows Road	Vienna	VA	—	7,797	47,817	6,537		7,944	54,207	62,151	7,639	1989	2006	52
8521 Leesburg Pike	Vienna	VA	—	4,316	30,885	(713	)	4,397	30,091	34,488	4,656	1984	2006	51
NEW JERSEY/DELAWARE
457 Haddonfield Road	Cherry Hill	NJ	—	2,142	9,120	1,190		2,142	10,310	12,452	4,491	1990	1996	40
220 Lake Drive East	Cherry Hill	NJ	—	2,144	8,798	735		2,144	9,533	11,677	2,954	1988	2001	40
200 Lake Drive East	Cherry Hill	NJ	—	2,069	8,275	1,281		2,069	9,556	11,625	2,901	1989	2001	40
210 Lake Drive East	Cherry Hill	NJ	—	1,645	6,579	1,067		1,645	7,646	9,291	2,288	1986	2001	40
6 East Clementon Road	Gibbsboro	NJ	—	1,345	5,366	682		1,345	6,048	7,393	2,498	1980	1997	40
20 East Clementon Road	Gibbsboro	NJ	—	769	3,055	499		769	3,554	4,323	1,460	1986	1997	40
10 Foster Avenue	Gibbsboro	NJ	—	244	971	113		244	1,084	1,328	476	1983	1997	40
7 Foster Avenue	Gibbsboro	NJ	—	231	921	91		231	1,011	1,243	400	1983	1997	40
50 East Clementon Road	Gibbsboro	NJ	—	114	964	3		114	967	1,081	406	1986	1997	40
2 Foster Avenue	Gibbsboro	NJ	—	185	730	16		185	746	931	316	1974	1997	40
4 Foster Avenue	Gibbsboro	NJ	—	183	726	5		183	732	914	307	1974	1997	40
1 Foster Avenue	Gibbsboro	NJ	—	93	364	76		93	440	533	202	1972	1997	40
5 U.S. Avenue	Gibbsboro	NJ	—	21	81	3		21	84	105	35	1987	1997	40
5 Foster Avenue	Gibbsboro	NJ	—	9	32	26		9	58	67	25	1968	1997	40



1009 Lenox Drive	Lawrenceville	NJ	—	4,876	19,284	3,866		5,118	22,909	28,026	9,337	1989	1998	40
989 Lenox Drive	Lawrenceville	NJ	—	3,701	14,802	1,494		3,850	16,147	19,997	4,038	1984	2003	40
2000 Lenox Drive	Lawrenceville	NJ	—	2,291	12,221	2,384		2,684	14,212	16,896	4,097	2000	2000	40
1200 Lenox Drive	Lawrenceville	NJ	—	1,071	12,967	2,500		1,071	15,467	16,538	2,656	2007	N/A	40
997 Lenox Drive	Lawrenceville	NJ	—	2,410	9,700	4,323		2,540	13,893	16,433	5,267	1987	1998	40
993 Lenox Drive	Lawrenceville	NJ	—	2,811	17,996	(4,571	)	2,960	13,276	16,236	5,124	1985	1998	40
100 Lenox Drive	Lawrenceville	NJ	—	—	—	12,114		1,134	10,980	12,114	2,471	1977	1999	40
1000 Lenox Drive	Lawrenceville	NJ	—	1,174	4,696	2,180		1,244	6,806	8,050	2,999	1982	2002	40
1120 Executive Boulevard	Marlton	NJ	—	2,074	8,415	1,971		2,074	10,386	12,460	4,540	1987	1997	40
Two Eves Drive	Marlton	NJ	—	818	3,461	278		818	3,738	4,557	1,713	1987	1997	40
Five Eves Drive	Marlton	NJ	—	703	2,819	582		703	3,401	4,104	1,520	1986	1997	40
Four B Eves Drive	Marlton	NJ	—	588	2,369	348		588	2,717	3,305	1,224	1987	1997	40
Four A Eves Drive	Marlton	NJ	—	539	2,168	137		539	2,305	2,844	1,081	1987	1997	40



								Gross Amount at Which Carried
				Initial Cost				December 31, 2012
Property Name	City	State	Encumberances at December 31, 2012 (a)	Land	Building and Improvements	Net Improvements (Retirements) Since Acquisition		Land	Building and Improvements	Total (b)	Accumulated Depreciation at December 31, 2012(c)	Year of Construction	Year Acquired	Depreciable Life
308 Harper Drive	Moorestown	NJ	—	1,643	6,663	1,070		1,644	7,732	9,376	2,993	1976	1998	40
700 East Gate Drive	Mt. Laurel	NJ	—	3,569	14,436	2,094		3,569	16,530	20,099	6,720	1984	1998	40
10000 Midlantic Drive	Mt. Laurel	NJ	—	3,206	12,857	2,066		3,206	14,923	18,129	6,542	1990	1997	40
15000 Midlantic Drive	Mt. Laurel	NJ	—	3,061	12,254	1,403		3,061	13,657	16,718	5,770	1991	1997	40
1000 Atrium Way	Mt. Laurel	NJ	—	2,061	8,180	5,015		2,061	13,195	15,256	5,540	1989	1997	40
1000 Howard Boulevard	Mt. Laurel	NJ	—	2,297	9,288	3,015		2,297	12,303	14,600	4,712	1988	1997	40
2000 Midlantic Drive	Mt. Laurel	NJ	—	2,202	8,823	1,898		2,203	10,720	12,923	4,236	1989	1997	40
701 East Gate Drive	Mt. Laurel	NJ	—	1,736	6,877	1,480		1,736	8,358	10,093	3,094	1986	1998	40
9000 Midlantic Drive	Mt. Laurel	NJ	—	1,472	5,895	1,830		1,472	7,725	9,197	2,919	1989	1997	40
307 Fellowship Drive	Mt. Laurel	NJ	—	1,565	6,342	1,226		1,565	7,568	9,133	2,891	1981	1998	40
309 Fellowship Drive	Mt. Laurel	NJ	—	1,518	6,154	596		1,518	6,750	8,268	2,702	1982	1998	40
303 Fellowship Drive	Mt. Laurel	NJ	—	1,493	6,055	638		1,494	6,692	8,186	2,652	1979	1998	40
305 Fellowship Drive	Mt. Laurel	NJ	—	1,421	5,768	978		1,421	6,745	8,167	2,661	1980	1998	40
1000 Bishops Gate	Mt. Laurel	NJ	—	934	6,287	413		934	6,700	7,634	2,028	2005	2000	40
161 Gaither Drive	Mt. Laurel	NJ	—	1,016	4,064	654		1,016	4,718	5,734	1,602	1987	2001	40
4000 Midlantic Drive	Mt. Laurel	NJ	—	714	5,085	(1,819	)	714	3,265	3,980	1,528	1998	1997	40
815 East Gate Drive	Mt. Laurel	NJ	—	636	2,584	200		636	2,783	3,420	1,130	1986	1998	40
817 East Gate Drive	Mt. Laurel	NJ	—	611	2,426	360		611	2,785	3,397	1,200	1986	1998	40
400 Commerce Drive	Newark	DE	—	2,528	9,220	1,198		2,528	10,418	12,946	3,382	1997	2002	40
100 Commerce Drive	Newark	DE	—	1,160	4,633	716		1,160	5,350	6,509	2,209	1989	1997	40
200 Commerce Drive	Newark	DE	—	911	4,414	1,018		911	5,432	6,343	1,844	1998	2002	40
Main Street - Plaza 1000	Voorhees	NJ	—	2,732	10,942	3,402		2,732	14,344	17,076	6,730	1988	1997	40
Main Street - Piazza	Voorhees	NJ	—	696	2,802	28		696	2,831	3,526	1,269	1990	1997	40
Main Street - Promenade	Voorhees	NJ	—	531	2,052	339		532	2,391	2,922	990	1988	1997	40
920 North King Street	Wilmington	DE	—	6,141	21,140	1,083		6,141	22,223	28,364	6,120	1989	2004	30
300 Delaware Avenue	Wilmington	DE	—	6,368	13,739	2,615		6,369	16,354	22,722	5,432	1989	2004	23
Two Righter Parkway	Wilmington	DE	—	2,802	11,217	6,190		2,802	17,407	20,209	3,253	1987	2001	40
One Righter Parkway	Wilmington	DE	—	2,545	10,195	4,478		2,545	14,673	17,218	7,235	1989	1996	40
RICHMOND
4364 South Alston Avenue	Durham	NC	—	1,622	6,419	844		1,581	7,304	8,885	2,712	1985	1998	40
4805 Lake Brooke Drive	Glen Allen	VA	—	1,640	6,567	1,661		1,640	8,227	9,868	3,496	1996	1998	40
Overlook II	Glen Allen	VA	—	748	4,492	147		791	4,595	5,386	444	2000	2011	40
Overlook I	Glen Allen	VA	—	748	3,976	149		791	4,081	4,872	406	1998	2011	40
2812 Emerywood Parkway	Henrico	VA	—	1,069	4,281	1,048		1,069	5,329	6,398	2,342	1980	1998	40
300 Arboretum Place	Richmond	VA	—	5,450	21,892	3,707		5,450	25,599	31,049	10,276	1988	1998	40
7501 Boulders View Drive	Richmond	VA	—	4,669	19,699	2,057		4,925	21,500	26,425	3,285	1990	2007	40



							Gross Amount at Which Carried
				Initial Cost			December 31, 2012
Property Name	City	State	Encumberances at December 31, 2012(a)	Land	Building and Improvements	Net Improvements (Retirements) Since Acquisition	Land	Building and Improvements	Total (b)	Accumulated Depreciation at December 31, 2012 (c)	Year of Construction	Year Acquired	Depreciable Life
7300 Beaufont Springs Drive	Richmond	VA	—	4,672	19,689	1,517	4,922	20,956	25,878	2,858	2000	2007	40
6800 Paragon Place	Richmond	VA	—	4,552	18,414	1,918	4,552	20,332	24,884	3,705	1986	2006	40
6802 Paragon Place	Richmond	VA	—	2,917	11,454	2,644	2,917	14,098	17,015	4,032	1989	2002	40
1025 Boulders Parkway	Richmond	VA	—	2,574	11,297	1,390	2,824	12,437	15,261	1,770	1994	2007	40
2100-2116 West Laburnam Avenue	Richmond	VA	—	2,482	8,846	3,046	2,482	11,892	14,374	4,783	1976	1998	40
7401 Beaufont Springs Drive	Richmond	VA	—	2,349	10,396	921	2,599	11,067	13,666	1,545	1998	2007	40
7325 Beaufont Springs Drive	Richmond	VA	—	2,344	10,377	503	2,594	10,630	13,224	1,470	1999	2007	40
9011 Arboretum Parkway	Richmond	VA	—	1,857	7,702	871	1,857	8,573	10,430	3,324	1991	1998	40
6806 Paragon Place	Richmond	VA	—	—	10,288	106	403	9,992	10,394	2,185	2007	2005	40
9100 Arboretum Parkway	Richmond	VA	—	1,362	5,489	669	1,362	6,158	7,520	2,359	1988	1998	40
2511 Brittons Hill Road	Richmond	VA	—	1,202	4,820	1,472	1,202	6,292	7,494	2,698	1987	1998	40
100 Gateway Centre Parkway	Richmond	VA	—	391	5,410	511	391	5,921	6,312	1,595	2001	1998	40
9200 Arboretum Parkway	Richmond	VA	—	985	3,973	1,242	985	5,216	6,200	1,931	1988	1998	40
9210 Arboretum Parkway	Richmond	VA	—	1,110	4,474	527	1,110	5,001	6,111	1,997	1988	1998	40
2201-2245 Tomlynn Street	Richmond	VA	—	1,020	4,067	685	1,020	4,752	5,772	1,780	1989	1998	40
9211 Arboretum Parkway	Richmond	VA	—	582	2,433	827	582	3,261	3,842	1,053	1991	1998	40
2212-2224 Tomlynn Street	Richmond	VA	—	502	2,014	364	502	2,378	2,880	857	1985	1998	40
2244 Dabney Road	Richmond	VA	—	550	2,203	37	550	2,240	2,790	892	1993	1998	40
2221-2245 Dabney Road	Richmond	VA	—	530	2,123	73	530	2,196	2,726	857	1994	1998	40
2248 Dabney Road	Richmond	VA	—	512	2,049	132	512	2,181	2,693	835	1989	1998	40
2277 Dabney Road	Richmond	VA	—	507	2,034	61	507	2,095	2,602	811	1986	1998	40
2246 Dabney Road	Richmond	VA	—	455	1,822	18	455	1,840	2,295	726	1987	1998	40
2161-2179 Tomlynn Street	Richmond	VA	—	423	1,695	100	423	1,795	2,218	697	1985	1998	40
2130-2146 Tomlynn Street	Richmond	VA	—	353	1,416	354	353	1,769	2,123	750	1988	1998	40
2251 Dabney Road	Richmond	VA	—	387	1,552	153	387	1,705	2,092	703	1983	1998	40
2256 Dabney Road	Richmond	VA	—	356	1,427	218	356	1,645	2,001	684	1982	1998	40
2120 Tomlynn Street	Richmond	VA	—	281	1,125	196	281	1,321	1,602	525	1986	1998	40
2240 Dabney Road	Richmond	VA	—	264	1,059	11	264	1,069	1,333	422	1984	1998	40
Boulders Land	Richmond	VA	—	1,256	—	28	1,259	25	1,284	—	N/A	2007	N/A



												Gross Amount at Which Carried
					Initial Cost							December 31, 2012
Property Name	City	State	Encumberances at December 31, 2012 (a)		Land		Building and Improvements		Net Improvements (Retirements) Since Acquisition			Land		Building and Improvements		Total (b)		Accumulated Depreciation at December 31, 2012 (c)		Year of Construction	Year Acquired	Depreciable Life
CALIFORNIA
5900 & 5950 La Place Court	Carlsbad	CA	—		3,706		11,185		3,123			3,954		14,059		18,014		2,451		1988	2006	48
5963 La Place Court	Carlsbad	CA	—		2,824		9,413		2,069			2,998		11,307		14,306		1,840		1987	2006	55
5973 Avenida Encinas	Carlsbad	CA	—		2,121		8,361		1,433			2,255		9,659		11,915		1,942		1986	2006	45
2035 Corte Del Nogal	Carlsbad	CA	—		3,261		6,077		1,140			3,498		6,980		10,478		1,656		1991	2006	39
1200 Concord Avenue	Concord	CA	—		6,395		24,664		708			6,514		25,251		31,766		5,438		1984	2006	34
1220 Concord Avenue	Concord	CA	—		6,476		24,966		156			6,475		25,122		31,597		5,130		1984	2006	34
155 Grand Avenue	Oakland	CA	—		13,556		54,266		5,016			13,555		59,284		72,839		9,841		1990	2007	40
Two Kaiser Plaza	Oakland	CA	—		7,841		—		—			7,840		—		7,841		—		N/A	2006	N/A
Oakland Lot B	Oakland	CA	—		4,342		—		—			4,341		—		4,342		—		N/A	2006	N/A
16870 W Bernardo Drive	San Diego	CA	—		2,979		15,896		1,762			3,153		17,484		20,638		2,871		2002	2006	56
AUSTIN
1250 Capital of Texas Hwy South	Austin	TX	—		5,152		37,928		6,240			5,249		44,072		49,321		8,644		1984	2006	52
1301 Mopac Expressway	Austin	TX	—		4,188		41,229		(761		)	4,249		40,407		44,657		5,765		2001	2006	55
1601 Mopac Expressway	Austin	TX	—		3,538		34,346		871			3,604		35,149		38,754		5,512		2000	2006	54
7000 West at Lantana	Austin	TX	—		4,651		20,897		1			4,650		20,898		25,549		—		N/A	2012	40
3711 South Mopac Expressway - II	Austin	TX	—		1,688		19,229		4,317			1,687		23,546		25,233		4,807		2007	2006	40
3711 South Mopac Expressway - I	Austin	TX	—		1,688		21,011		2,464			1,687		23,477		25,163		3,395		2007	2006	40
1501 South Mopac Expressway	Austin	TX	—		3,698		34,912		(2,190		)	3,767		32,653		36,419		4,556		1999	2006	53
1221 Mopac Expressway	Austin	TX	—		3,291		31,548		5,411			3,368		36,882		40,249		5,169		2001	2006	55
	Total:		$	443,942	$	651,264	$	3,533,200	$	541,708		$	662,107	$	4,064,062	$	4,726,169	$	954,665


(a)	Excludes the effect of any net interest premium/(discount).


(b)	Reconciliation of Real Estate:

The following table reconciles the real estate investments from January 1, 2010 to December 31, 2012 (in thousands):



	2012			2011			2010
Balance at beginning of year	$	4,793,080		$	4,834,111		$	4,512,618
Additions:
Acquisitions	50,579			31,454			102,475
Capital expenditures and assets placed into service	90,619			133,550			336,281
Less:
Dispositions	(208,109		)	(206,035		)	(117,263		)
Balance at end of year	$	4,726,169		$	4,793,080		$	4,834,111

The aggregate cost for federal income tax purposes is $4.0 billion as of December 31, 2012.


(c)	Reconciliation of Accumulated Depreciation:

The following table reconciles the accumulated depreciation on real estate investments from January 1, 2010 to December 31, 2012 (in thousands):



	2012			2011			2010
Balance at beginning of year	$	865,710		$	776,078		$	716,957
Additions:
Depreciation expense — continuing operations	154,095			157,691			133,740
Depreciation expense — discontinued operations	2,143			1,185			1,554
Less:
Dispositions	(67,283		)	(69,244		)	(76,173		)
Balance at end of year	$	954,665		$	865,710		$	776,078

(d) Total net improvements since acquisition for this redevelopment property do not include amounts allocated to construction-in-progress, as shown within the Company's consolidated balance sheet as of December 31, 2012.

(e) This property was contributed to an unconsolidated real estate venture, however, the Company will continue to consolidate this property due to its continuing involvement in this property resulting from its ongoing lease at this property and its 50% ownership interest in the venture. Please see Note 3 to the consolidated financial financial statements for additional information.

- Definition

The entire disclosure for real estate and accumulated depreciation. This may include a schedule that describes the property and lists the initial cost of land, buildings and improvements, improvements and carrying costs capitalized after acquisition, and the total carrying cost for land, buildings and improvements for each property and in aggregate. The schedule also lists the accumulated depreciation for each property and in aggregate, the date each property was constructed and acquired, the useful life used to calculate depreciation and any encumbrances on the properties. The entity provides a reconciliation of the carrying amount of real estate from the beginning of the period to the end of the period. Any real estate investments that have been written down or reserved against are described, including the basis of the write-down. A material amount of intercompany profit in the total carrying amount of real estate is disclosed. The aggregate cost of all real estate investments for federal income tax purposes is also disclosed.

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