Condensed Balance Sheets (USD $)	Mar. 31, 2013	Dec. 31, 2012
Building One Grand Central Place, located at 60 East 42nd Street and 301 Madison Avenue, New York, N.Y.
Total real estate, net	$ 66,808,107	$ 67,615,604
Cash and cash equivalents	899,242	2,095,727
Due from Supervisor, a related party	87,202	87,202
Receivable from Participants-NYS estimated tax	10,513
Prepaid insurance	1,971	15,764
Deferred costs	3,453,410	3,310,685
Leasing costs, less accumulated amortization of $1,669,186 in 2013 and $1,749,117 in 2012	2,922,361	3,043,218
Mortgage refinancing costs, less accumulated amortization of $2,279,752 in 2013 and $2,188,848 in 2012	655,379	684,783
Total assets	74,838,185	76,852,983
Liabilities:
Mortgages payable	88,496,496	89,109,449
Accrued mortgage interest	414,716	417,546
Payable to Lessee, a related party	21,951	21,951
Due to Supervisor, a related party	424,614	789,033
Accrued expenses	168	4,415
Total liabilities	89,357,945	90,342,394
Commitments and contingencies
Members' deficiency (at March 31, 2013 and December 31, 2012, there were 700 units (at $10,000 per unit) of participation units outstanding)	(14,519,760)	(13,489,411)
Total liabilities and members' deficiency	74,838,185	76,852,983
Building [Member]
Building One Grand Central Place, located at 60 East 42nd Street and 301 Madison Avenue, New York, N.Y.
Real estate	16,960,000	16,960,000
Less: accumulated depreciation	(16,960,000)	(16,960,000)
Total real estate, net
Building improvements and equipment [Member]
Building One Grand Central Place, located at 60 East 42nd Street and 301 Madison Avenue, New York, N.Y.
Real estate	68,039,708	68,039,708
Less: accumulated depreciation	(14,353,739)	(13,918,390)
Total real estate, net	53,685,969	54,121,318
Tenant improvements [Member]
Building One Grand Central Place, located at 60 East 42nd Street and 301 Madison Avenue, New York, N.Y.
Real estate	8,779,779	8,779,779
Less: accumulated depreciation	(2,897,641)	(2,525,493)
Total real estate, net	5,882,138	6,254,286
Land [Member]
Building One Grand Central Place, located at 60 East 42nd Street and 301 Madison Avenue, New York, N.Y.
Total real estate, net	$ 7,240,000	$ 7,240,000