| Document And Entity Information | Jun. 17, 2021 |
| Document Information [Line Items] | |
| Entity, Registrant Name | Presidio Property Trust, Inc. |
| Document, Type | 8-K |
| Document, Period End Date | Jun. 17, 2021 |
| Entity, Incorporation, State or Country Code | MD |
| Entity, File Number | 001-34049 |
| Entity, Tax Identification Number | 33-0841255 |
| Entity, Address, Address Line One | 4995 Murphy Canyon Road, Suite 300 |
| Entity, Address, City or Town | San Diego |
| Entity, Address, State or Province | CA |
| Entity, Address, Postal Zip Code | 92123 |
| City Area Code | 760 |
| Local Phone Number | 471-8536 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Security Exchange Name | NASDAQ |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0001080657 |
| SeriesACommonStock001ParValuePerShare Custom [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Series A Common Stock, $0.01 par value per share |
| Sqft Custom [Member] | |
| Document Information [Line Items] | |
| Trading Symbol | SQFT |
| SeriesDCumulativeRedeemablePerpetualPreferredStock001ParValuePerShare9375 Custom [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 9.375% Series D Cumulative Redeemable Perpetual Preferred Stock, $0.01 par value per share |
| Sqftp Custom [Member] | |
| Document Information [Line Items] | |
| Trading Symbol | SQFTP |
| TheNasdaqStockMarketLlc Custom [Member] | |
| Document Information [Line Items] | |
| Security Exchange Name | NASDAQ |
