Permit fee range estimator
Pick a state and a project to see the permit fee range we have on record, linked to its official source. Unlike a single national average, every figure here traces back to the issuing authority.
Exact permit fees are set by the local building department. WikEst shows the published or code-based range where one exists, linked to its official source — verify the final amount at the source before budgeting.
🏠 Accessory Dwelling Unit (ADU) permit fee in California
Exempt criteria: None — ADUs always require a building permit.
Representative cities for California: Los Angeles, San Francisco, San Diego.
All 20 project fee ranges in California
Official-source ranges where published; “By local jurisdiction” means no flat fee is published and the amount is set case by case.
| Project | Permit? | Authority | Fee range | Go / no-go |
|---|---|---|---|---|
| 🏠 Accessory Dwelling Unit (ADU) | yes | city | Permit and plan-check fees set by the local jurisdiction; state law limits impact fees on ADUs. Verify with the city building department. | allowed |
| 🪵 Deck / Porch | conditional | city | Set by the city — typically a flat fee plus a valuation-based fee. Verify with the city building department. | allowed |
| 🧱 Fence / Wall | conditional | city | Usually no building permit under the height threshold; zoning setback rules apply. Verify locally. | allowed |
| 🛖 Shed / Outbuilding | conditional | city | No fee under the exemption; a permit fee applies if over the threshold. | allowed |
| 🪜 Basement Finish | yes | city | Valuation-based building permit fee. Verify with the city building department. | allowed |
| 🚗 Garage / Carport | yes | city | Valuation-based fee; flat plus per-square-foot. Verify with the city building department. | allowed |
| ☀️ Rooftop Solar PV | yes | city | Electrical permit fee set by the city; state law requires streamlined review for agencies above 50,000 population. | allowed |
| 🌡️ HVAC Replacement | yes | city | Mechanical permit fee set by the city. Verify with the city building department. | allowed |
| 🍳 Kitchen Remodel | yes | city | Building + electrical + plumbing permit fees. Verify with the city building department. | allowed |
| 🛁 Bathroom Remodel | yes | city | Building + plumbing + electrical fees. Verify with the city building department. | allowed |
| 🏗️ Room Addition | yes | city | Valuation-based building permit; impact fees may apply. Verify with the city building department. | allowed |
| 🪟 Window / Door Replacement | conditional | city | Permit fee if changing the opening; in-kind swap is often Over-the-Counter. | allowed |
| 🏘️ Roof Replacement | conditional | city | Roofing permit fee set by the city; in-kind shingle re-roof may be Over-the-Counter. | allowed |
| 🅿️ Driveway / Parking Pad | conditional | city | No building permit for private flatwork; a right-of-way/curb cut needs a separate permit. | allowed |
| 🏊 Swimming Pool / Spa | yes | city | Building permit + electrical; fee set by the city. Verify with the city building department. | allowed |
| 🧱 Retaining Wall | conditional | city | No fee under the exemption; a permit applies if over the threshold. | allowed |
| 💥 Demolition / Teardown | yes | city | Demolition permit fee set by the city/county building department; verify locally. | allowed |
| 🚰 Septic System | yes | county | Septic permit fees set by the local environmental health / wastewater agency; verify locally. | allowed |
| 🔌 EV Charger | conditional | city | Electrical permit fee set by the city; California law requires an expedited review process for EV charging stations. | allowed |
| ⚡ Standby Generator | yes | city | Electrical (and often mechanical/gas) permit fee set by the city; verify locally. | allowed |
Permit fee questions
Are these permit fee numbers official?
Where a flat fee or a published fee schedule exists, we show that range and link to the issuing authority. Where no flat fee is published, the permit cost is set case by case and we say so rather than invent a number. Always confirm the final amount with your local building department.
Why does the same project cost differently by city?
Permit fees are set locally — by city, county, or state depending on the project and location — and often scale with project valuation or square footage. That is why WikEst shows the official source for each state and points you to the local office to verify.
What fees are not included in the permit fee?
Permit fees usually exclude separate costs such as impact fees, school/district assessments, utility connection charges, plan-review or expedite fees, and contractor labor. Those are set by different agencies and vary widely, so budget for them separately and verify locally.
Do I need a permit if the project is small?
Many projects are exempt below a size or valuation threshold (for example a short fence or a small shed), but thresholds differ by state and city. Check the project page for your state and confirm with the local authority before starting.
This is guidance, not legal or tax advice. Check a specific project →