Cover Page - shares	9 Months Ended
	Sep. 30, 2025	Nov. 12, 2025
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2025
Document Transition Report	false
Entity File Number	000-54382
Entity Registrant Name	PACIFIC OAK STRATEGIC OPPORTUNITY REIT, INC.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	26-3842535
Entity Address, Address Line One	3200 Park Center Dr.
Entity Address, Address Line Two	Suite 800
Entity Address, City or Town	Costa Mesa
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92626
City Area Code	866
Local Phone Number	722-6257
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		102,951,395
Entity Central Index Key	0001452936
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q3
Amendment Flag	false
Current Fiscal Year End Date	--12-31