Complete Guide to Building an ADU in Sacramento County: Permits, Costs & Design
By Justen Pressler |
Why Sacramento County Homeowners Are Building ADUs
Accessory Dwelling Units (ADUs) have become one of the most popular home improvement projects in Sacramento County. Whether you're in Sacramento, Folsom, Elk Grove, or Citrus Heights, an ADU can provide:
- Rental income: Average rents of $1,500-$2,500/month in Sacramento County
- Multi-generational living: Keep aging parents close while maintaining independence
- Home office or studio space: Perfect for the remote work era
- Increased property value: ADUs can add 20-30% to your home's value
Sacramento County ADU Regulations in 2025
California's ADU laws have made it easier than ever to build. Here's what Sacramento County homeowners need to know:
Size Allowances:
- Detached ADUs: Up to 1,200 sq ft
- Attached ADUs: Up to 50% of primary dwelling or 1,200 sq ft (whichever is less)
- Junior ADUs (JADUs): Up to 500 sq ft within existing home
Setback Requirements:
- Rear and side setbacks: 4 feet for units under 800 sq ft
- No setback required for garage conversions
Parking:
- No additional parking required for ADUs near public transit
- One space may be required in other areas (varies by city)
ADU Costs in Sacramento, Folsom & Elk Grove
Building an ADU in Sacramento County typically costs:
| ADU Type | Cost Range | Timeline |
|---|---|---|
| Garage Conversion | $80,000 - $150,000 | 3-5 months |
| Detached New Build | $150,000 - $300,000 | 6-10 months |
| Attached Addition | $100,000 - $200,000 | 4-7 months |
*Costs vary based on size, finishes, and site conditions specific to Folsom, Elk Grove, Rancho Cordova, and other Sacramento County cities.*
The ADU Building Process
Step 1: Feasibility Assessment
Our team visits your Sacramento County property to assess:
- Available space and setbacks
- Utility connections
- Soil conditions
- Access requirements
Step 2: Design & Permits
We handle all permit applications with:
- City of Sacramento Building Department
- Folsom Planning Division
- Elk Grove Development Services
- Other Sacramento County jurisdictions
Step 3: Construction
Our experienced crews manage every aspect:
- Foundation and framing
- Electrical and plumbing
- HVAC installation
- Interior finishing
Popular ADU Designs in Sacramento County
The Folsom Family Suite: 800 sq ft one-bedroom with full kitchen, ideal for aging parents
The Elk Grove Rental: 600 sq ft studio optimized for rental income
The Fair Oaks Office: 400 sq ft detached workspace with half bath
Start Your Sacramento County ADU Project
Pressler Properties & Construction specializes in ADU construction throughout Sacramento County. From initial design through final inspection, our family-owned team ensures a smooth building experience.
Contact us for a free ADU consultation and site assessment at your Sacramento, Folsom, Elk Grove, or Citrus Heights property.