Consolidated Statement of Equity - USD ($)	Total	Common Stock Class A [Member]	Common Stock Class T [Member]	Common Stock Class W [Member]	Additional Paid-in Capital [Member]	Distributions [Member]	Accumulated Deficit [Member]	Strategic Student & Senior Housing Trust, Inc. [Member]	Noncontrolling Interests in our Operating Partnership [Member]	Preferred Equity in our Operating Partnership [Member]	Redeemable Common Stock [Member]
Beginning Balance at Dec. 31, 2017	$ 60,255,483	$ 8,948			$ 68,799,264	$ (1,379,950)	$ (6,233,945)	$ 61,194,317	$ (938,834)		$ 303,844
Beginning Balance, shares at Dec. 31, 2017		8,948,551
Gross proceeds from issuance of common stock	15,740,030	$ 1,734			15,738,296			15,740,030
Gross proceeds from issuance of common stock, shares		1,733,591
Offering costs	(1,395,269)				(1,395,269)			(1,395,269)
Changes to redeemable common stock	(531,268)				(531,268)			(531,268)			531,268
Distributions	(1,482,380)					(1,482,380)		(1,482,380)
Distributions to noncontrolling interests	(3,907)								(3,907)
Issuance of shares for distribution reinvestment plan	531,268	$ 61			531,207			531,268
Issuance of shares for distribution reinvestment plan (in shares)		60,516
Net loss attributable to Strategic Student & Senior Housing Trust, Inc.	(2,726,345)						(2,726,345)	(2,726,345)
Net loss attributable to the noncontrolling interests	(7,275)								(7,275)
Ending Balance at Mar. 31, 2018	70,380,337	$ 10,743			83,142,230	(2,862,330)	(8,960,290)	71,330,353	(950,016)		835,112
Ending Balance, shares at Mar. 31, 2018		10,742,658
Beginning Balance at Dec. 31, 2018	52,304,923	$ 11,122	$ 36	$ 44	83,533,060	(7,981,638)	(22,263,678)	53,298,946	(994,023)	$ 10,095,708	2,659,654
Beginning Balance, shares at Dec. 31, 2018		11,122,135	36,299	43,996
Gross proceeds from issuance of common stock	1,993,382	$ 160	$ 16	$ 23	1,993,183			1,993,382
Gross proceeds from issuance of common stock, shares		159,655	15,500	22,872
Offering costs	(425,357)				(425,357)			(425,357)
Reimbursement of offering costs by Advisor	6,470				6,470			6,470
Changes to redeemable common stock	(565,651)				(565,651)			(565,651)			565,651
Redemptions of common stock											(48,600)
Distributions	(1,726,681)					(1,726,681)		(1,726,681)
Distributions to noncontrolling interests	(2,690)								(2,690)
Distributions to preferred unitholders in our Operating Partnership										(238,240)
Issuance of shares for distribution reinvestment plan	565,651	$ 57			565,594			565,651
Issuance of shares for distribution reinvestment plan (in shares)		57,271	220	184
Stock based compensation expense	4,406				4,406			4,406
Net loss attributable to Strategic Student & Senior Housing Trust, Inc.	(4,740,781)						(4,740,781)	(4,740,781)		238,240
Net loss attributable to the noncontrolling interests	(9,517)								(9,517)
Accretion of non-cash preferred equity issuance costs										11,649
Ending Balance at Mar. 31, 2019	$ 47,404,155	$ 11,339	$ 52	$ 67	$ 85,111,705	$ (9,708,319)	$ (27,004,459)	$ 48,410,385	$ (1,006,230)	$ 10,107,357	$ 3,176,705
Ending Balance, shares at Mar. 31, 2019		11,339,061	52,019	67,052