Document And Entity Information	12 Months Ended
	Dec. 31, 2024 employee	Feb. 21, 2025 shares	Jun. 30, 2024 USD ($)
Entity Information [Line Items]
Auditor Firm ID	49
Entity Incorporation, State or Country Code	DE
Document Transition Report	false
Document Quarterly Report	true
Entity Number of Employees | employee	650
Entity Registrant Name	Green Brick Partners, Inc.
Entity Central Index Key	0001373670
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity File Number	001-33530
Entity Tax Identification Number	20-5952523
City Area Code	(469)
Local Phone Number	573-6755
Entity Address, Address Line One	5501 Headquarters Drive, Suite 300W
Entity Address, City or Town	Plano
Entity Address, Postal Zip Code	75024
Entity Address, State or Province	TX
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Shell Company	false
Entity Public Float | $			$ 1,752,737,797
Entity Common Stock, Shares Outstanding | shares		44,498,190
Entity Small Business	false
Auditor Location	Dallas, Texas
Auditor Name	RSM US LLP
ICFR Auditor Attestation Flag	true
Current Fiscal Year End Date	--12-31
Document Financial Statement Error Correction [Flag]	false
Series A Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares (each representing a 1/1000th interest in a share of 5.75% Series A Cumulative Perpetual Preferred Stock, par value $0.01 per share)
Trading Symbol	GRBK PRA
Security Exchange Name	NYSE
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	GRBK
Security Exchange Name	NYSE