A garage conversion is the most affordable way to add an Accessory Dwelling Unit (ADU) to your Sacramento property. Here's our complete guide to the process.
Step 1: Feasibility Assessment
Before you start, consider:
- Garage size — Minimum 150 sq ft for a JADU, most conversions are 400-600 sq ft
- Ceiling height — Must meet minimum 7'6" (some garages need floor lowering)
- Foundation — Must support residential loads
- Utilities — Access to water, sewer, and electrical
Step 2: Design & Planning
Work with a contractor (like us!) to design your ADU:
- Floor plan — Studio, 1-bed, or 2-bed layout
- Kitchen — Full kitchen or kitchenette
- Bathroom — At least one full bath required
- Parking — California law prohibits requiring replacement parking
Step 3: Permitting
- Sacramento County permitting process:
- Submit plans to Building Department
- Plan check review (4-6 weeks typical)
- Obtain building permit
- Schedule inspections during construction
- Final inspection and certificate of occupancy
Pro tip: Under SB 543 (2026), cities must determine application completeness within 15 days.
Step 4: Construction (8-16 Weeks Typical)
Phase 1: Demolition & Prep (Week 1-2) - Remove garage door, pour new wall - Excavate for foundation work if needed - Install new windows and exterior door
Phase 2: Rough-In (Week 3-6) - Framing for interior walls - Electrical rough-in - Plumbing rough-in - HVAC installation - Insulation
Phase 3: Finish Work (Week 7-12) - Drywall, tape, and texture - Flooring installation - Cabinet and countertop installation - Tile work (bathroom, kitchen backsplash) - Paint
Phase 4: Final (Week 13-16) - Fixture installation - Appliance installation - Final inspections - Cleanup and walkthrough
Costs
Typical garage conversion costs in Sacramento:
- Basic studio conversion: $80,000 - $120,000
- 1-bedroom with full kitchen: $100,000 - $150,000
- Premium finishes: $120,000 - $180,000
Return on Investment
A garage conversion ADU in Sacramento can generate:
- Rental income: $1,200 - $2,000/month
- Property value increase: 20-30% of construction cost
- Payback period: 5-8 years through rental income
Ready to Convert Your Garage?
Future Generation Construction specializes in garage conversion ADUs across Sacramento, Citrus Heights, Roseville, Elk Grove, and surrounding areas. Contact us for a free feasibility assessment and quote.
