Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2023	Aug. 14, 2023
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2023
Document Transition Report	false
Entity File Number	001-08546
Entity Registrant Name	TRINITY PLACE HOLDINGS INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	22-2465228
Entity Address, Address Line One	340 Madison Avenue
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10173
City Area Code	212
Local Phone Number	235-2190
Title of 12(b) Security	Common Stock $0.01 Par Value Per Share
Trading Symbol	TPHS
Security Exchange Name	NYSEAMER
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
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000724742
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		38,103,800