BALANCE SHEETS (USD $)	Dec. 31, 2012	Dec. 31, 2011
Real Estate at 250-264 West 57th Street, New York, N.Y. :
Total real estate, net	$ 44,396,866	$ 39,151,553
Cash and cash equivalents:
Cash in banks	936,593	402,600
Fidelity U.S. treasury income portfolio	2,384,006	1,922,424
Total cash and cash equivalents	3,320,599	2,325,024
Due from Supervisor, a related party	60,000	60,000
Other assets	45,956
Deferred costs	1,752,344	790,019
Leasing commissions, less accumulated amortization of $996,614 and $740,183 in 2012 and 2011, respectively	1,400,573	795,274
Mortgage refinancing costs, less accumulated amortization of $1,580,197 and $1,263,152 in 2012 and 2011, respectively	647,623	964,668
Total assets	51,623,961	44,086,538
Liabilities:
Mortgage payable	52,900,635	44,935,520
Accrued mortgage interest	230,972	201,523
Payable to Lessee, a related party	3,322,181	3,576,129
Accrued supervisory fees, a related party		20,000
Accrued expenses	7,470	55,901
Due to Supervisor, a related party	621,233	153,445
Total liabilities	57,082,491	48,942,518
Commitments and contingencies
Members' deficiency	(5,458,530)	(4,855,980)
Total liabilities and members' deficiency	51,623,961	44,086,538
Building [Member]
Real Estate at 250-264 West 57th Street, New York, N.Y. :
Real estate	4,940,682	4,940,682
Less: Accumulated depreciation	(4,940,682)	(4,940,682)
Building Improvements [Member]
Real Estate at 250-264 West 57th Street, New York, N.Y. :
Real estate	44,256,841	41,215,430
Less: Accumulated depreciation	(7,423,289)	(6,334,722)
Total real estate, net	36,833,552	34,880,708
Tenant improvements [Member]
Real Estate at 250-264 West 57th Street, New York, N.Y. :
Real estate	6,733,105	2,702,193
Less: Accumulated depreciation	(1,287,226)	(548,783)
Total real estate, net	5,445,879	2,153,410
Land [Member]
Real Estate at 250-264 West 57th Street, New York, N.Y. :
Total real estate, net	$ 2,117,435	$ 2,117,435