San Jose Home Addition Permits 2026
San Jose home addition permit fees, plan review, and required inspections for 2026.
San Jose Home Addition permit basics
- Building department: City of San Jose Development Services
- Department URL: https://www.sanjoseca.gov/your-government/departments-offices/planning-building-code-enforcement
- Permit fee typical: $400 - $3,500 permit fee
- Plan review + approval: 7-25 business days; plan check 8-16 weeks
- Inspections required: 6-12 inspections (footing, framing, electrical, plumbing, mechanical, insulation, drywall, final)
San Jose Home Addition common issues
Setback compliance, FAR (floor-area ratio), structural review required, sewer/water capacity may need upgrade.
San Jose-specific permitting context
San Jose has the highest permit costs in the US. Title 24 energy compliance is strict. ADU permits streamlined. Most jobs require licensed CSLB contractor.
Climate factors: Mild Mediterranean; earthquake retrofit common; high-end residential market
California licensing for Home Addition contractors
Contractors State License Board (CSLB) - required: $450 application + $25K bond. Board: https://www.cslb.ca.gov.
Mechanics lien deadline in California: 90 days from completion (60 days if notice of completion recorded). Preliminary notice: 20-day preliminary notice REQUIRED for all parties except direct contractors.
San Jose Home Addition sales tax
California sales tax: 7.25% + local (~8.7% combined avg). Construction labor is NOT subject to sales tax. Repair labor on TPP may be taxable depending on transaction structure.
Verify with the California Department of Tax and Fee Administration (CDTFA).
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