California permit requirements
We have read and dated 140 permit rules across 14 jurisdictions in California. They do not all say the same thing: patio thresholds alone run from 120 to 300 sq ft across 5 of them.
- Jurisdictions
- 14
- Verified rules
- 140
- Permit always required
- 80
- Depends on the project
- 60
Do you need a building permit in California?
Usually yes, but not from California itself: permits are issued by the city or county, not the state, so the rule that governs your project is the one your own jurisdiction publishes. 80 of those local rules require a permit outright, 60 depend on a size or scope condition the office publishes, and 0 need none. California sets the building code those local rules derive from; your city or county sets the threshold and the fee.
Do California jurisdictions agree?
Every row below is a measurement at least two California jurisdictions publish, compared against each other. This is the question a statewide answer cannot settle, because the number that governs your project is the one your own city or county publishes.
| Project | Published threshold | Jurisdictions | Agreement |
|---|---|---|---|
| Patio | 120 to 300 sq ft | 5 | 3 different numbers |
| Deck | 120 to 200 sq ft | 7 | 2 different numbers |
| Pool | 18 to 24 inches | 8 | 2 different numbers |
| Fence | 6 to 7 feet | 14 | 2 different numbers |
| Shed | 120 sq ft | 14 | Same number in all 14 |
| Deck | 30 inches | 4 | Same number in all 4 |
2 of 6 comparable measurements are uniform across California; 4 are not. Latest verification 2026-08-15.
Where California jurisdictions split
The verdict for each project across the 14 California jurisdictions we cover. On 4 of 10 projects they do not give the same answer, which is why a statewide answer is not one.
| Project | Permit required | Depends | No permit | Across the state |
|---|---|---|---|---|
| Deck | 3 | 11 | Answer varies | |
| Patio | 6 | 8 | Answer varies | |
| Pool | 5 | 9 | Answer varies | |
| Roof Replacement | 10 | 4 | Answer varies | |
| Electrical | 14 | Same answer everywhere | ||
| Fence | 14 | Same answer everywhere | ||
| HVAC | 14 | Same answer everywhere | ||
| Plumbing | 14 | Same answer everywhere | ||
| Shed | 14 | Same answer everywhere | ||
| Solar | 14 | Same answer everywhere |
Building without a permit in California
California makes it a criminal misdemeanor to violate the State Housing Law or the State Building Standards Code provisions adopted under it, which covers construction, alteration, or maintenance of a building without required permits. The state ceiling is a fine up to $1,000, up to six months in jail, or both.
Penalties, the as-built path, and what the statute actually says
What you can build without a permit in California
0 of the 140 answered rules across California need no permit at all and 60 turn on a size or scope condition the jurisdiction publishes, by project and jurisdiction, in each office's own words.
What a permit costs in California
There is no single California permit fee. Each jurisdiction in California sets and publishes its own, and they do not use the same pricing model, so the figure that applies to your project is the one your own city or county publishes. Below is every California project where we have quoted one, verbatim, from the office's own schedule.
| Project in California | Jurisdictions publishing a fee |
|---|---|
| Deck | 13 |
| Electrical | 13 |
| HVAC | 13 |
| Patio | 13 |
| Plumbing | 13 |
| Pool | 13 |
| Roof Replacement | 13 |
| Shed | 13 |
| Fence | 12 |
| Solar | 12 |
Each row links to the California table carrying every quoted fee, its source and its verification date. We do not publish a California average: the notes mix flat minimums, valuation percentages and per-fixture charges, so an average would be a number no office charges.
Building code in California
California Residential Code (CRC), Title 24, Part 2.5. Based on the International Residential Code (IRC), with California amendments.
Administered by California Building Standards Commission (BSC). Official source
Cities and counties may adopt local amendments. Confirm the current edition with the jurisdiction.
Most local permit thresholds derive from this code. See our sources and standards.
What each California jurisdiction publishes
One line per jurisdiction, written from its own rules rather than from a state summary. This is the section that used to be a list of links, and the states with the fewest jurisdictions to compare are the ones it says the most about.
- Alameda County 10 rules
4 of 10 projects always need a permit and 6 turn on the size or scope of the work. Published thresholds include deck at 30 inches and fence at 7 feet.
- Contra Costa County 10 rules
5 of 10 projects always need a permit and 5 turn on the size or scope of the work. The ones that depend on the project are deck, fence, patio, pool and shed. Published thresholds include deck at 200 sq ft and fence at 7 feet.
- Fresno County 10 rules
7 of 10 projects always need a permit and 3 turn on the size or scope of the work. The ones that depend on the project are fence, pool and shed. Published thresholds include fence at 7 feet and pool at 24 inches.
- Los Angeles 10 rules
8 of 10 projects always need a permit and 2 turn on the size or scope of the work. The ones that depend on the project are fence and shed. Published thresholds include fence at 6 feet and shed at 120 sq ft.
- Los Angeles County 10 rules
5 of 10 projects always need a permit and 5 turn on the size or scope of the work. The ones that depend on the project are deck, fence, patio, pool and shed. Published thresholds include fence at 6 feet and pool at 18 inches.
- Orange County 10 rules
8 of 10 projects always need a permit and 2 turn on the size or scope of the work. The ones that depend on the project are fence and shed. Published thresholds include fence at 6 feet and shed at 120 sq ft.
- Riverside County 10 rules
5 of 10 projects always need a permit and 5 turn on the size or scope of the work. The ones that depend on the project are deck, fence, pool, roof replacement and shed. Published thresholds include deck at 200 sq ft and fence at 7 feet.
- Sacramento 10 rules
5 of 10 projects always need a permit and 5 turn on the size or scope of the work. The ones that depend on the project are deck, fence, patio, roof replacement and shed. Published thresholds include deck at 30 inches and fence at 7 feet.
- Sacramento County 10 rules
5 of 10 projects always need a permit and 5 turn on the size or scope of the work. The ones that depend on the project are deck, fence, patio, pool and shed. Published thresholds include patio at 200 sq ft and pool at 18 inches.
- San Bernardino County 10 rules
7 of 10 projects always need a permit and 3 turn on the size or scope of the work. The ones that depend on the project are deck, fence and shed. Published thresholds include deck at 120 sq ft and fence at 6 feet.
- San Diego 10 rules
4 of 10 projects always need a permit and 6 turn on the size or scope of the work. Published thresholds include patio at 300 sq ft and deck at 200 sq ft.
- San Diego County 10 rules
5 of 10 projects always need a permit and 5 turn on the size or scope of the work. The ones that depend on the project are deck, fence, patio, pool and shed. Published thresholds include fence at 6 feet and patio at 300 sq ft.
- San Jose 10 rules
7 of 10 projects always need a permit and 3 turn on the size or scope of the work. The ones that depend on the project are deck, fence and shed. Published thresholds include deck at 200 sq ft and fence at 7 feet.
- Santa Clara County 10 rules
5 of 10 projects always need a permit and 5 turn on the size or scope of the work. The ones that depend on the project are deck, fence, patio, pool and shed. Published thresholds include deck at 200 sq ft and fence at 7 feet.