Guide
What homeowners need to know.
Use official fee resources
San Jose points homeowners to fee schedule and estimator resources. Permit cost is not one flat magic number.
Plans affect cost indirectly
Incomplete plans create correction cycles, and correction cycles cost time. Good permit drawings are not glamorous, but they save pain.
School and utility questions matter
San Jose's FAQ references school fee considerations and PG&E metering policy. Confirm current requirements with the relevant agencies.
Cost table
Use ranges until scope is real.
| Item | Planning range | Why it moves |
|---|---|---|
| Building permit fees | Use city schedule | Depends on size, valuation, and current city fee rules. |
| School fees | Confirm by project | San Jose FAQ points homeowners to school district impact fee requirements for certain ADUs. |
| Plan corrections | Variable | Can affect design fees and timeline more than the permit fee itself. |
Mistakes
Avoid these expensive shortcuts.
- Budgeting only the permit fee and forgetting drawings, engineering, and corrections.
- Ignoring utility metering and service requirements.
- Assuming a fee estimate from last year still applies.
FAQ
Fast answers.
How do I estimate San Jose ADU permit cost?
Use San Jose's official fee resources and confirm with the city or relevant districts because fees depend on size, valuation, and project conditions.
Sources