Consolidated Balance Sheets - USD ($)		Dec. 31, 2020	Dec. 31, 2019
Real Estate Investment Property, Net [Abstract]
Property		$ 56,294,000	$ 55,861,000
Accumulated depreciation		(7,180,000)	(5,522,000)
Total real estate assets		49,114,000	50,339,000
Cash and cash equivalents		5,109,000	4,624,000
Escrows and utility deposits		1,449,000	566,000
Accrued rents and accounts receivable, net of allowance for doubtful accounts		1,273,000	1,421,000
Receivable due from related party		132,000	184,000
Unamortized lease commissions and deferred legal cost, net		490,000	685,000
Prepaid expenses and other assets	[1]	89,000	62,000
Total assets		57,656,000	57,881,000
Liabilities:
Notes payable		15,185,000	15,434,000
Accounts payable and accrued expenses	[2]	2,506,000	2,344,000
Payable due to related party		335,000	346,000
Convertible notes payable - related parties		197,780	197,780
Accrued interest payable		165,000	148,000
Tenants' security deposits		825,000	881,000
Total liabilities		19,214,000	19,351,000
Commitments and contingencies:		0	0
Shareholders' Equity:
Common Shares - $0.01 par value, 400,000,000 authorized: 633,130 shares issued and 595,000 outstanding at December 31, 2020 and 443,299 shares issued and 405,169 outstanding at December 31, 2019		6,000	4,000
Additional paid-in capital		28,494,000	28,203,000
Accumulated deficit		(23,623,000)	(23,252,000)
Treasury stock, at cost, 38,130 shares		(801,000)	(801,000)
Total Pillarstone Capital REIT shareholders' equity		4,081,000	4,159,000
Noncontrolling interest in subsidiary		34,361,000	34,371,000
Total equity		38,442,000	38,530,000
Total liabilities and equity		57,656,000	57,881,000
Operating lease right of use assets		7,000	7,000
Operating lease liabilities		7,000	7,000
Preferred A Shares
Shareholders' Equity:
Preferred shares		3,000	3,000
Preferred C Shares
Shareholders' Equity:
Preferred shares		2,000	2,000
Variable Interest Entity
Real Estate Investment Property, Net [Abstract]
Property		56,290,000	55,857,000
Accumulated depreciation		(7,177,000)	(5,519,000)
Total real estate assets		49,113,000	50,338,000
Cash and cash equivalents		4,321,000	3,331,000
Escrows and utility deposits		1,449,000	566,000
Accrued rents and accounts receivable, net of allowance for doubtful accounts		1,201,000	1,360,000
Receivable due from related party		132,000	184,000
Unamortized lease commissions and deferred legal cost, net		490,000	685,000
Prepaid expenses and other assets		37,000	35,000
Total assets		56,743,000	56,499,000
Liabilities:
Notes payable		15,185,000	15,434,000
Accounts payable and accrued expenses		2,333,000	2,164,000
Payable due to related party		319,000	344,000
Accrued interest payable		63,000	67,000
Tenants' security deposits		825,000	881,000
Total liabilities		$ 18,725,000	$ 18,890,000

[1] Operating lease right of use assets (net) (related to adoption of Topic 842)

[2] Operating lease liabilities (related to adoption of Topic 842)