XML 17 R1.htm IDEA: XBRL DOCUMENT v3.21.2
Cover
 9 Months Ended
Sep. 30, 2021
Entity Addresses [Line Items]  
Document Type S-11/A
Amendment Flag true
Amendment Description AMENDMENT NO. 1
Entity Registrant Name Presidio Property Trust, Inc.
Entity Central Index Key 0001080657
Entity Address, Address Line One 4995 Murphy Canyon Road
Entity Address, Address Line Two Suite 300
Entity Address, Address Line Three San Diego
Entity Address, State or Province CA
Entity Address, Postal Zip Code 92123
City Area Code (760)
Local Phone Number 471-8536
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company false
Business Contact [Member]  
Entity Addresses [Line Items]  
Entity Address, Address Line One 4995 Murphy Canyon Road
Entity Address, Address Line Two Suite 300
Entity Address, Address Line Three San Diego
Entity Address, State or Province CA
Entity Address, Postal Zip Code 92123
City Area Code (760)
Local Phone Number 471-8536