| Document and Entity Information | Jun. 23, 2023 |
| Cover [Abstract] | |
| Entity Registrant Name | Strategic Student & Senior Housing Trust, Inc. |
| Document Type | 8-K |
| Amendment Flag | false |
| Entity Central Index Key | 0001698538 |
| Document Period End Date | Jun. 23, 2023 |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | true |
| Securities Act File Number | 333-220646 |
| Entity Incorporation, State or Country Code | MD |
| Entity Tax Identification Number | 81-4112948 |
| Entity Address, Address Line One | 19900 MacArthur Blvd |
| Entity Address, Address Line Two | Suite 250 |
| Entity Address, City or Town | Irvine |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 92612 |
| City Area Code | 877 |
| Local Phone Number | 327-3485 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
