Consolidated Statements of Operations (UNITED DOMINION REALTY, L.P) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
REVENUES
Rental income	$ 187,320	$ 150,139	$ 521,679	$ 435,152
Total revenues	192,549	152,331	534,299	440,871
Rental expenses:
Real estate taxes and insurance	22,548	17,832	63,040	53,933
Personnel	14,575	13,945	44,131	39,855
Utilities	10,185	8,537	28,014	24,268
Repair and maintenance	10,575	9,211	28,807	24,663
Administrative and marketing	3,684	3,904	11,773	11,182
Property management	5,152	4,129	14,347	11,967
Other operating expenses	1,539	1,403	4,540	4,342
Real estate depreciation and amortization	95,436	70,880	265,184	207,061
Interest expenses:
Interest on secured debt	39,617	36,129	112,281	105,678
General and administrative	11,919	11,994	35,512	31,927
Total expenses	216,565	180,138	615,770	522,506
Loss from continuing operations	(25,596)	(28,642)	(85,731)	(84,392)
Income/(loss) from discontinued operations	11,810	4,037	58,198	7,121
Consolidated net income/(loss)	(13,786)	(24,605)	(27,533)	(77,271)
Net loss attributable to UDR, Inc.	(13,251)	(23,766)	(26,475)	(74,443)
Loss per OP unit- basic and diluted:
Income from discontinued operations	$ 0.00	$ 0.00
United Dominion Reality L.P [Member]
REVENUES
Rental income	99,833	84,131	281,461	249,175
Total revenues	99,833	84,131	281,461	249,175
Rental expenses:
Real estate taxes and insurance	10,845	10,216	31,996	30,840
Personnel	7,451	7,183	22,828	20,544
Utilities	5,367	4,564	14,750	13,091
Repair and maintenance	5,370	4,879	14,597	13,080
Administrative and marketing	2,026	1,785	5,961	5,117
Property management	2,745	2,314	7,740	6,853
Other operating expenses	1,398	1,179	4,203	3,940
Real estate depreciation and amortization	51,906	39,637	141,725	118,661
Interest expenses:
Interest on secured debt	13,700	12,360	38,233	36,653
Interest on note payable due to General Partner	248	106	694	318
General and administrative	5,394	6,629	16,268	14,123
Total expenses	106,450	90,852	298,995	263,220
Loss from continuing operations	(6,617)	(6,721)	(17,534)	(14,045)
Income/(loss) from discontinued operations	17	(115)	16,438	1,724
Consolidated net income/(loss)	(6,600)	(6,836)	(1,096)	(12,321)
Net loss attributable to non-controlling interests	(32)	(9)	(91)	(44)
Net loss attributable to UDR, Inc.	$ (6,632)	$ (6,845)	$ (1,187)	$ (12,365)
Loss per OP unit- basic and diluted:
Loss from continuing operations attributable to OP unitholders	$ (0.04)	$ (0.04)	$ (0.10)	$ (0.08)
Income from discontinued operations			$ 0.09	$ 0.01
Net loss attributable to OP unitholders	$ (0.04)	$ (0.04)	$ (0.01)	$ (0.07)
Weighted average OP units outstanding	183,086	179,909	181,837	179,909