Building permits in Santa Clara County, California
Of the 10 common home projects we have verified in Santa Clara County, 5 need a permit outright and 5 depend on size or scope. Click any project for the full rule, fee, and how to apply.
By Mario Bailey Last checked · 2 official sources
Verified against official sources- Project types verified
- 10
- in Santa Clara County
Santa Clara County Department of Planning and Development, Development Services (Building Inspection Office)
- County Government Center, East Wing, 7th Floor, 70 West Hedding Street, San Jose, CA 95110
- Phone: 408-299-5700
- Official permit page
- Permit portal
Look up a permit in Santa Clara County
Santa Clara County permit records are public, and you can check a property's permit history by address or permit number online.
What needs a permit in Santa Clara County
Of the 10 common home projects we have verified in Santa Clara County, 5 need a permit outright and 5 depend on size or scope. Click any project for the full rule, fee, and how to apply.
| Project | Permit needed? | Threshold | Typical fee |
|---|---|---|---|
| Deck Permit | It depends | deck area, paired with a 30-inch height limit, no attachment to the dwelling, and no required exit door served | Decks are charged by valuation, not by a flat fee |
| Electrical Permit | Permit required | Any size | ...Schedule effective July 1, 2025 the electrical inspection hourly rate is... |
| Fence Permit | It depends | fence height at which the County Residential Code permit exemption stops applying | ...Valuation-Based Fee Schedule, effective July 1, 2025, which begins at a $249.00... |
| HVAC Permit | Permit required | Any size | ...mechanical permit fee and the mechanical inspection hourly rate are both... |
| Patio Permit | It depends | Before building a patio cover, trellis, carport or similar roofed structure over a patio | No patio-specific flat fee is published |
| Plumbing Permit | Permit required | Any size | ...plumbing permit fee and the plumbing inspection hourly rate are both $272.00, and a... |
| Pool Permit | It depends | depth of a prefabricated swimming pool | The county charges single-family residential swimming pools as flat fees |
| Roof Replacement Permit | Permit required | Any size | ...the county's Building Section Services Fee Schedule effective July 1, 2025: $479.20... |
| Shed Permit | It depends | floor area of a one-story detached tool or storage shed | No shed-specific flat fee is published |
| Solar Permit | Permit required | Any size | ...the fee package the Board adopted on April 17, 2018, lists those amounts as $375.35... |
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Santa Clara County permit fees compared with nearby California localities
| California locality | Deck Permit | HVAC Permit | Electrical Permit |
|---|---|---|---|
| Santa Clara County | Decks are charged by valuation, not by a flat fee | ...mechanical inspection hourly rate are both... | ...2025 the electrical inspection hourly rate is... |
| Alameda County | ...A building permit fee table (for example, '$381.46... | ...Permit 18% of Building Permit Fees, $140.00... | ...Permit 20% of Building Permit Fees, $140.00... |
| Contra Costa County | No deck-specific flat fee is published | ...Schedule S-002 D.6, "Mechanical Permit (Other) $75.00... | ...Schedule S-002 C.6, "Electrical Permit (Other) $75.00... |
| Fresno County | No flat deck permit fee is published | ...Code Fees, FY 2026-27: Issuing each permit... | ...Code Fees, FY 2026-27: Issuing permits $42.77... |
Each cell is the opening clause of that California jurisdiction's own fee schedule; the full wording and source sit on each permit page.
Santa Clara County permit questions, answered from the data
- Do you need a permit in Santa Clara County?
- For most projects, yes. Of the 10 permit types we have verified for Santa Clara County, 5 always require a permit (for example an electrical permit), 5 depend on size or scope (a deck permit, for instance). Each Santa Clara County permit type's page states the exact rule and its source.
- How much does a permit cost in Santa Clara County?
- Santa Clara County publishes a fee for 10 of the 10 permit types we cover, each quoted on its page from the jurisdiction's own schedule. Fees are set by Santa Clara County Department of Planning and Development, Development Services (Building Inspection Office); we do not estimate or mark them up.
- Where do you apply for a permit in Santa Clara County?
- Santa Clara County Department of Planning and Development, Development Services (Building Inspection Office) issues permits in Santa Clara County, with an online portal for applications, plan uploads and status checks, and takes questions at 408-299-5700. The Santa Clara County official page and portal are linked in the office section above.
How the Santa Clara County pages were verified. 10 permit types, 7 distinct official sources, most recently checked . Every rule is read from Santa Clara County Department of Planning and Development, Development Services (Building Inspection Office) or the applicable code and cited on its page; anything we could not confirm for Santa Clara County is marked rather than estimated. How we verify.