January 2, 2026|By One Stop Builders
Building an ADU on a budget? Explore garage conversions ($80K-$150K), prefab units, and cost-saving strategies.
Want to build an ADU but worried about cost? There are ways to reduce costs without sacrificing quality.
Cheapest ADU Types
1. Garage Conversion: $80,000-$150,000
Most affordable because the structure already exists. Shorter timeline and simpler permitting.
2. Junior ADU (JADU): $50,000-$100,000
Converting existing space within your home, max 500 sq ft.
3. Small Detached ADU: $150,000-$200,000
Compact new construction (400-600 sq ft) with simple design.
Budget ADU Rental Income
Even budget ADUs generate significant income: $1,500-$2,500/month, paying off your investment in 4-5 years.
Ready to Start Your Project?
Contact One Stop Builders for a free consultation.
