Cover Page - shares	6 Months Ended
	Jun. 30, 2021	Aug. 13, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Entity Registrant Name	HMG COURTLAND PROPERTIES INC
Entity Central Index Key	0000311817
Current Fiscal Year End Date	--12-31
Entity File Number	1-7865
Entity Tax Identification Number	59-1914299
Entity Common Stock, Shares Outstanding		1,016,848
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	1870 S. Bayshore Drive
Entity Address, Address Line Two	Coconut Grove
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33133
City Area Code	305
Local Phone Number	854-6803
Entity Filer Category	Non-accelerated Filer
Entity Shell Company	false
Entity Small Business	true
Entity Emerging Growth Company	false
Title of 12(b) Security	Common Stock
Trading Symbol	HMG
Security Exchange Name	NYSE
Document Quarterly Report	true
Document Transition Report	false