Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2024	Aug. 09, 2024
Entity Listings [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Document Transition Report	false
Entity File Number	001-41917
Entity Registrant Name	Smith Douglas Homes Corp.
Entity Central Index Key	0001982518
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	93-1969003
Entity Address, Address Line One	110 Village Trail, Suite 215
Entity Address, City or Town	Woodstock
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30188
City Area Code	770
Local Phone Number	213-8067
Title of 12(b) Security	Class A common Stock, $0.0001 par value per share
Trading Symbol	SDHC
Security Exchange Name	NYSE
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Shell Company	false
Class A Common Stock [Member]
Entity Listings [Line Items]
Entity Common Stock, Shares Outstanding		8,846,154
Class B Common Stock [Member]
Entity Listings [Line Items]
Entity Common Stock, Shares Outstanding		42,435,897