Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2019	Mar. 12, 2020	May 30, 2018
Cover page.
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	000-53673
Entity Registrant Name	Presidio Property Trust, Inc.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	33-0841255
Entity Address, Address Line One	4995 Murphy Canyon Road
Entity Address, Address Line Two	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
Title of 12(g) Security	Common Stock, Series A, $.01 par value
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		17,763,683
Documents Incorporated by Reference	Part III, Items 10, 11, 12, 13 and 14 incorporate by reference certain specific portions of the definitive Proxy Statement for Presidio Property Trust’s Annual Meeting currently scheduled to be held on May 20, 2020 to be filed pursuant to Regulation 14A. Only those portions of the proxy statement which are specifically incorporated by reference herein shall constitute a part of this annual report.
Entity Public Float			$ 0
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Entity Central Index Key	0001080657
Amendment Flag	false
Document Fiscal Period Focus	FY
No Trading Symbol Flag	true