v3.25.2
Cover - shares
 6 Months Ended
Jun. 30, 2025
Aug. 01, 2025
Entity Listings [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2025  
Document Transition Report false  
Entity File Number 001-41917  
Entity Registrant Name Smith Douglas Homes Corp.  
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 Yes  
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  
Entity Central Index Key 0001982518  
Amendment Flag false  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Current Fiscal Year End Date --12-31  
Class A Common Stock    
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   9,017,152
Class B Common Stock    
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   42,435,897