Do I Need a Permit for My Fence, Deck, or Patio Cover in LA?
This is one of the most common questions I hear, and the honest answer is: it depends on where you live, what you're building, and how big it is. Los Angeles County is a patchwork of incorporated cities and unincorporated areas, each with their own rules. What's allowed without a permit in Glendale might require one in Pasadena. What flies in unincorporated LA County might need approval in La Cañada Flintridge.
I'll walk through the general rules below, but I want to be upfront: I'm a builder, not a code consultant. The information here is based on commonly applied rules across the LA area, but codes change, jurisdictions vary, and your specific property may have overlays, CC&Rs, or HOA restrictions that affect what's allowed. Always verify with your local building department before starting work.
That said, here's what I can tell you from years of building in this area.
Fences
The general rule in most LA-area jurisdictions:
A wood fence under six feet tall in a side yard or rear yard typically does not require a building permit. This covers the majority of standard residential privacy fences.
Front yard fences are more heavily regulated. In the City of Los Angeles, front yard fences are generally limited to 3.5 feet (42 inches) in height. If you want something taller, you may need to apply for approval, and there may be requirements for visibility — meaning the fence must be partially open (like wrought iron or spaced pickets) rather than solid, so it doesn't block sight lines for vehicles and pedestrians near driveways and intersections.
Fences over six feet — including fences on top of retaining walls where the combined height exceeds six feet — typically require a permit or approval from the local planning department. In unincorporated LA County, you don't need a building permit for a freestanding fence under six feet, but the Department of Regional Planning may still have requirements depending on the location on your lot.
Fences around pools must meet specific safety standards regardless of height — self-closing gates, latch placement, climb resistance. These are enforced strictly and apply everywhere.
What to watch for:
Some neighborhoods and tracts in LA — particularly in the hills and historic districts — have recorded CC&Rs (conditions, covenants, and restrictions) that limit fence heights below what the city allows. A title report will tell you if your property is subject to these.
Properties in hillside, wildfire, or high-risk zones may have additional requirements related to stability, emergency access, and fire-resistant materials.
If your fence is on or near a shared property line, your neighbor's input may be relevant — and California has specific laws about shared fence responsibilities that are worth knowing about. (This is a topic I'll cover in a future guide.)
Decks
The general rule:
Decks that are 30 inches or less above grade, not attached to the house, and not built over a basement or story below are typically exempt from building permits in most LA-area jurisdictions.
Decks over 30 inches above grade generally require a permit. This includes most elevated decks, particularly on hillside and sloped properties where the deck may be several feet above the downhill grade. For hillside properties in the foothills — which is a lot of my work — a deck permit is almost always required.
What a deck permit involves:
You'll typically need a site plan, construction drawings showing framing details and footing specifications, and potentially stamped engineered plans depending on the complexity and height. The permit process involves plan check review (which can take two to six weeks), a permit fee based on the project valuation, and inspections at the footing, framing, and final stages.
Additional considerations in LA:
Properties in Very High Fire Hazard Severity Zones (VHFHSZ) — which includes many foothill communities — may have additional requirements for fire-resistant materials and construction methods.
Seismic requirements apply throughout LA County — deck footings and connections must meet seismic design standards.
Setback requirements from property lines vary by jurisdiction and zoning. Your deck may need to be a certain distance from your property line, which can affect the design.
Pergolas, Arbors, and Patio Covers
This is where things get less straightforward.
Freestanding pergolas and arbors — open-roof structures that aren't attached to the house — are generally treated as accessory structures. In many jurisdictions, small freestanding structures under a certain size threshold (often 120 square feet and under 12 feet tall) are exempt from building permits. But the definition of "small" varies, and if the structure is attached to the house, different rules apply.
Attached patio covers — structures connected to the house that provide overhead shelter — almost always require a permit. They affect the structural integrity of the house and may trigger additional requirements for roofing, drainage, setbacks, and engineering.
Solid-roof patio covers are treated differently from open-roof pergolas in most jurisdictions. A solid roof creates a covered area that may be counted as additional square footage for zoning purposes, which can affect setback and lot coverage calculations.
The Bottom Line
For most of the fence work I do — standard privacy fences under six feet in side and rear yards — a building permit is not required. But I always recommend that clients verify with their local building department, because the exceptions and overlays can catch you off guard.
For decks, pergolas, and patio covers, the permit question is more case-by-case. If your project is anything more than a simple ground-level platform, plan on at least checking with the building department.
Here's what I do on my end:
During the design phase, I'll let you know if I think your project is likely to require a permit based on my experience building in your area. If it does, I'll help you understand what's involved and can work with you on the documentation. I'm not a permit expeditor, but I've been through the process enough times to know what to expect.
The cost of not getting a permit when one is required can be significant — stop-work orders, fines, mandatory removal, and complications when you eventually sell your home. It's always cheaper and easier to do it right the first time.
Where to Check
City of Los Angeles (LADBS): ladbs.org
Unincorporated LA County: dpw.lacounty.gov/building-and-safety
Glendale: glendaleca.gov/building-and-safety
Pasadena: cityofpasadena.net/planning
Burbank: burbankca.gov/building
La Cañada Flintridge: cityoflcf.org
For other cities in my service area, a quick search for "[your city] building department" will get you to the right place. If you're not sure whether your property is in an incorporated city or unincorporated LA County, your city's website or the LA County Assessor's office can clarify.
If you have questions about how permit requirements might affect your project, I'm happy to talk it through.
