ADU Permit & Soft-Cost Estimator
Estimate the permit fees, design, engineering, and other soft costs for your ADU project in Southern California.
What Are ADU Soft Costs?
Soft costs are all the non-construction expenses that go into building an ADU. They typically add 10–20% to total project cost and include:
- Architectural plans & design: $3,000–$12,000 depending on project complexity
- Structural engineering: $1,500–$5,000 for most ADUs
- Title 24 energy report: $500–$1,500
- City plan check fees: $2,000–$15,000+ (varies significantly by jurisdiction)
- Building permit fees: $1,500–$8,000
- Utility connection fees: $2,000–$10,000 if new services are needed
- School district fees: $0–$5,000 depending on jurisdiction (many are waived for ADUs)
Soft Costs by City
| City/Area | Typical Soft Costs |
|---|---|
| Unincorporated LA County | $8,000–$18,000 |
| City of LA / LADBS | $10,000–$22,000 |
| Anaheim / Orange County cities | $7,000–$15,000 |
| Irvine | $12,000–$25,000 |
| Inland Empire cities | $6,000–$14,000 |
Estimates only. Actual fees depend on project scope, jurisdiction, and current fee schedules. Vision ADU handles all permitting — we guide you through every fee.
Get exact permit costs for your project
Our in-house permit team will calculate the exact fees for your city and project type.
Book Free Consultation (866) 668-4264