Short answer: yes
Since the City of Brentwood's accessory-structure code update took effect on May 1, 2023, the city says a permit is required for all accessory buildings or structures that have a roof or cover or are meant to provide shelter, naming patio covers, gazebos, pergolas and carports, regardless of size. Confirm current rules with the city before you build: brentwoodca.gov accessory structure update (opens in a new tab).
"Do I need a permit for a patio cover?" is the most repeated question on patio cover searches around Brentwood, and most of the answers that rank are written for Southern California or for Brentwood, Los Angeles. This page is about Brentwood, CA 94513 in East Contra Costa County. It is a plain-language summary, not legal advice, and the city's own pages and counter staff are the final word.
What the city requires
Brentwood's 2023 update rewrote the rules for accessory structures: sheds, patio covers, pergolas, gazebos and similar. The city's FAQ on that page states that any accessory structure with a roof or cover, or one intended to provide shelter, needs a permit regardless of size. In practice that covers every project on this site: aluminum patio covers, open-beam pergolas and louvered roofs. The city also publishes a handout titled "Patio Covers and Enclosures," and its municipal code tips page lists patio covers and arbors among projects that need a permit.
Setbacks: how close to the property line
According to the city's FAQ, an attached patio cover can typically encroach up to 2 feet into a required side-yard setback and up to 8 feet into a required rear-yard setback, with no part of it closer than 3 feet to the property line. Required setbacks themselves depend on your zoning, so the starting point is your lot's zoning district, not a number from a neighbor's project. Freestanding structures have their own rules. Ask the city or your contractor to confirm the numbers for your lot before you settle on a size.
| Item | What the city's page says |
|---|---|
| Permit needed? | Yes, for any accessory structure with a roof or cover, regardless of size |
| Side-yard encroachment (attached cover) | Typically up to 2 ft into the required setback |
| Rear-yard encroachment (attached cover) | Typically up to 8 ft into the required setback |
| Minimum distance to property line | No part closer than 3 ft |
| Effective date | May 1, 2023 |
Who pulls the permit
Usually the contractor. A licensed contractor building the cover normally prepares or supplies the drawings (many aluminum systems come with pre-engineered plans), submits them, and schedules the inspections. Homeowners can pull their own permit as owner-builder, but then the plans, the inspections and the responsibility are yours. Either way, the quote should say who pulls it, who pays the fee, and whether plans and engineering are included. That is one of the lines on the contractor bid checklist.
What the permit process usually involves
- A site plan showing the house, the cover, and its distance to each property line.
- Structural drawings or the manufacturer's engineering for the size, spans and footings.
- Plan review by the city.
- Inspections, typically of the footings before concrete and a final inspection, plus electrical if fans or lights are added.
HOA approval comes first
Many Brentwood neighborhoods have homeowners associations with architectural review, and a patio cover changes how the back of the house looks from neighbors' yards. Most HOAs want drawings, the material and the color before work starts, and review can take weeks. Apply early, and get approval in writing before you sign a contract with a start date. The city permit and HOA approval are separate; one does not replace the other.
What about an existing, unpermitted cover?
Unpermitted patio covers are common in older East County homes, and they come up when a house is sold, since sellers are generally expected to disclose unpermitted work. Your options are usually to legalize it (permit it after the fact, which can mean opening up footings or adding engineering), or to remove it and build new. If an old wood cover is already rotting, replacing it with a permitted cover is often simpler than legalizing it. Ask the city's building division what it would take for your situation.
Oakley and Antioch
The rules above are Brentwood's. Oakley publishes an Accessory Structures Summary Guide (opens in a new tab) covering height, setbacks and what may sit in front of the house. Antioch's rules come from its Building Division (opens in a new tab). Check with each city before planning; do not assume Brentwood's numbers apply. More on Oakley and Antioch.
Frequently asked questions
Do I need a permit for a pergola in Brentwood, CA?
Yes. The City of Brentwood's 2023 accessory-structure rules require a permit for any accessory structure with a roof or cover or meant to provide shelter, and the city names pergolas specifically, regardless of size.
Can I build a patio cover without a permit in California?
In Brentwood, no; the city requires one for every patio cover. Rules differ between California cities, so check with your own city's building division. Unpermitted covers can cause problems when you sell or insure the house.
How close to the property line can a patio cover be in Brentwood?
The city's FAQ says an attached patio cover can typically encroach up to 2 feet into a side-yard setback and 8 feet into a rear-yard setback, with no part closer than 3 feet to the property line. Confirm with the city for your lot.
Who gets the permit, me or the contractor?
Usually the contractor, who submits the drawings and schedules inspections. You can pull it yourself as an owner-builder. Make sure the quote says who does it and whether plans and fees are included.
Cost ranges and technical notes on this page are general information from the sources named, not a quote or professional advice. Prices vary by size, material and design; get a written quote for your patio. See the disclaimer and cost sources.