Los Angeles splits back-yard work between LADBS building rules and zoning heights, and many small residential jobs, not just decks, can be plan-checked at the counter the same day.
Los Angeles has two sets of rules that matter for back-yard projects: the building code, enforced by the Department of Building and Safety (LADBS), and the zoning code, which controls heights and setbacks.
A project can be exempt from one and still limited by the other. That is especially true for fences and walls, which are the most common source of confusion in LA.
This guide covers the Los Angeles building permit patterns for fences and walls, sheds, decks, and a few related projects in the City of Los Angeles. Unincorporated LA County and the other 87 cities in the county have their own rules. Confirm for your address. See our disclaimer.
LADBS fence, shed, and deck rules in one table
| Project | City of LA pattern |
|---|---|
| Wood or wrought iron fence | LADBS: no building permit up to 10 ft, but zoning height limits apply |
| Concrete block fence wall | Express permit (no plan check) up to 6 ft when built to the city's standard |
| Fences over zoning limits in required yards | Zoning Administrator approval can allow up to 8 ft in some zones |
| Small shed | LAMC 91.101.5 puts one-story detached tool and storage sheds up to 120 sq ft outside the building code if they have no heating, plumbing, or electrical and are not in Fire District No. 1; confirm with LADBS |
| Re-roof, same-size window change-outs | Express permits, no plan check |
LA wood fences to 10 feet, and block walls
According to LADBS, "no permit is required for a wood fence or wrought iron fence up to 10 feet." That is a building-code answer. The zoning code separately limits fence heights in required front, side, and rear yards, and front-yard limits are much lower than 10 feet in most residential zones. The Department of City Planning explains that a Zoning Administrator can approve fences and walls "up to eight feet high located within the required front, side or rear yard" in A and R zones, which are otherwise prohibited (LA City Planning).
Masonry is different. LADBS lists "concrete block freestanding masonry fence walls ... in residential zones, maximum 6 feet height above grade" as an express permit when built to its standard design (LADBS express permits). Block walls need footings designed for LA's seismic conditions. See our fence permit guide.
LA sheds under the Los Angeles building code
Sheds are not on LA's permit-exempt list in LAMC Sec. 91.106.2. They are covered by a separate section instead: the city's building code says it does not apply to one-story detached accessory structures used as tool and storage sheds, playhouses, and similar uses with a floor area of 120 square feet or less, as long as the shed is not in Fire District No. 1, has no heating, plumbing, or electrical installation, and is placed where the zoning code allows (LAMC Sec. 91.101.5). Zoning setbacks still apply, a shed with wiring or plumbing is outside that exclusion, and a shed used as a room is a different project entirely. Confirm with LADBS before you build. Anything larger, or anything you plan to live or work in, moves toward ADU rules. See shed permits and garage conversion and ADU permits.
LA decks, platforms, and patio covers
Low, freestanding decks and platforms are often exempt under the model code, but attached decks, elevated decks, and anything with a roof generally need a permit and plan check in Los Angeles. Hillside lots add grading and geology reviews. Confirm with LADBS before building. See our deck permit guide and pergola and patio cover permits.
ADUs are LA's big back-yard project
Los Angeles is one of the busiest ADU markets in the country, and LADBS runs a dedicated ADU program with pre-approved standard plans. If your "shed" or "studio" will have a bathroom, kitchen, or be lived in, plan it as an ADU from the start.
Express permits for quick jobs
LADBS offers express permits without plan check for simple work, including re-roofs with Class A or B coverings over existing sheathing and same-size window and door change-outs. These are good examples of work that needs a permit but not drawings. See roof replacement permits and window replacement permits.
Fence heights by zone in the City of LA
LADBS publishes a one-page bulletin that answers the question most people actually have: how tall can my fence be in each yard? The numbers below apply in the required yards, the setback areas zoning keeps open (LADBS IB P/ZC 2023-002: Heights of Fences in Residential Zones (PDF)):
| Where | Zone | Maximum height |
|---|---|---|
| Front yard | R, RW | 3.5 ft |
| Front yard | A, RA | 6 ft |
| Side and rear yards | A, RA, R (lot 40 ft wide or more, not hillside) | 8 ft |
| Side and rear yards | Lots under 40 ft wide or in a hillside area | 6 ft |
The bulletin adds two lines worth reading twice. A permit is required for masonry or concrete fences over 3½ feet high, and you shouldn't assume the inside edge of the sidewalk is your property line. The city's building code matches that split: masonry or concrete fences up to 3½ feet and other fences up to 10 feet (other than pool barriers) are on its permit-exempt list (LAMC Sec. 91.106.2). The 10-foot building-code figure doesn't override the zoning heights above. If you want more than zoning allows, the 8-foot Zoning Administrator approval mentioned earlier involves a public hearing with notice to abutting owners (LA City Planning); our zoning variance guide explains how those hearings tend to go.
What the current express permit list covers
LADBS updated its express permit bulletin in 2026, and a few entries matter for back-yard and exterior work (LADBS IB P/GI 2026-003: Express Permits (PDF)):
- Block walls: concrete block freestanding walls built to the city's standard bulletin, up to 6 feet, but not in the required front yard or within 5 feet of the side street lot line of a reverse corner lot.
- Pool barrier fences: a freestanding, non-masonry fence used as a pool barrier is an express permit.
- Re-roofs: Class A roofing is required in a Very High Fire Hazard Severity Zone, and a residential roof replacement over 50% of the roof area needs a certified cool roof product.
- Siding: vinyl, wood or fiber cement siding over solid sheathing with an approved water-resistive barrier, on walls 5 feet or more from property lines, using a product with a valid ICC evaluation report.
- Seismic retrofits: adding sill plate anchor bolts and plywood to cripple walls per LA City Standard Plan #1.
Express permits can be pulled online or by appointment at the Metro, Van Nuys, West LA, San Pedro and South LA counters (same bulletin). Our pool and spa permit guide covers what a barrier has to do.
Decks and small buildings: same-day counter review
A deck that isn't exempt doesn't necessarily mean weeks of plan check. LADBS lists decks, one-story accessory buildings built to its Type V sheet, low retaining walls without a soil report, and demolition of a house or accessory building among the residential projects it reviews at the counter. The department says these plans are reviewed the same day they're submitted, in roughly 45 to 60 minutes (LADBS Counter Plan Check).
For truly small pools, the building code exempts swimming, bathing and wading pools no more than 24 inches deep with a surface area of 250 square feet or less (LAMC Sec. 91.106.2). Electrical work for pumps and lights is still a separate question.
Mistakes that send LA projects back
- Building a front-yard block wall to 6 feet because a neighbor has one. In R zones the front-yard limit is 3.5 feet, and older walls may predate current rules or lack permits.
- Measuring from the sidewalk. LADBS specifically warns against treating the sidewalk edge as the property line.
- Assuming LA County rules apply. The county's exemptions are different, so check which agency covers your address.
- Re-roofing in a fire zone with a Class B product. Very High Fire Hazard Severity Zones require Class A.
Decks in a Los Angeles fire hazard severity zone
If your lot is mapped as a Very High or High Fire Hazard Severity Zone, the deck rules change. The LADBS Fire Hazard Severity Zone supplemental checklist (PC/STR/Corr.Lst.116, effective January 1, 2026) says new buildings, additions, and alterations in those zones must follow the 2025 California Wildland-Urban Interface Code as amended by the Los Angeles Municipal Code. Projects in those zones also need Fire Department Hydrant and Access Unit clearance.
For decks, porches, balconies, and stairs, the walking surface has to be one of the listed types: material tested to both ASTM E2632 and ASTM E2726 that meets the code’s criteria, ignition-resistant building material, material that passes SFM Standard 12-7A-4, or noncombustible material. Products that only pass SFM 12-7A-4A, or only ASTM E2632 under the alternate criteria, are allowed only when the wall covering they attach to is noncombustible or ignition-resistant. Every deck-to-wall intersection needs at least 6 inches of metal flashing applied vertically on the wall.
Accessory buildings change too. Under the same checklist, an accessory or miscellaneous building of any size that sits less than 3 feet from the house must be built of noncombustible or ignition-resistant materials. Check the fire zone for your parcel before you price decking. A board that is not one of the listed types is a plan check correction waiting to happen.
Other LA home projects that qualify for Counter Plan Check
LADBS says simple projects that still need plan check can be reviewed the same day at the counter, typically in about 45 to 60 minutes, at its Metro (Downtown), Van Nuys, West LA, South LA, and San Pedro offices (LADBS Counter Plan Check). The residential project types it lists include:
| Project type on the LADBS list | What it means for a homeowner |
|---|---|
| One-story addition to a single-family dwelling or duplex | A small addition can skip the full plan-check queue |
| Alteration to a single-family dwelling or duplex | Interior remodels that need plans |
| One-story accessory building built to the Type V sheet requirements | A larger shed or workshop that does need a permit |
| New door or window opening | Cutting a new opening in a wall |
| Low retaining wall without soil report | Short garden walls |
| Demolition of a residence or accessory building | Tearing down an old garage or shed |
| Damage repair less than 10% of the replacement cost of the structure | Smaller storm, fire, or accident repairs |
Source: LADBS Counter Plan Check. Bring complete plans; anything larger goes to regular plan check.
For how these limits compare across cities, see our permit-free limits by city table.
Los Angeles fence, shed, and deck questions
Do I need a permit for a fence in Los Angeles?
Not a building permit for wood or wrought iron up to 10 feet, per LADBS, but zoning height limits apply. Block walls use an express permit up to 6 feet.
Do I need a permit for a shed in Los Angeles?
LA's own building code does not apply to a one-story detached tool or storage shed of 120 square feet or less with no heating, plumbing, or electrical, outside Fire District No. 1 (LAMC Sec. 91.101.5). Sheds are not on the 91.106.2 exempt list, so confirm with LADBS and respect setbacks.
Is LA County the same as the City of Los Angeles?
No. Unincorporated areas follow LA County Building and Safety, and each incorporated city has its own department.
How tall can a front-yard fence be in Los Angeles?
In R and RW zones, 3.5 feet in the required front yard; in A and RA zones, 6 feet. An 8-foot fence needs City Planning approval (LADBS fence heights bulletin).
Can I get an LA block wall permit online?
A standard concrete block wall up to 6 feet, outside the required front yard, qualifies as an express permit, which LADBS issues online or by appointment (LADBS express permits).
How long does LADBS take to review deck plans?
Decks are on the counter plan check list, which LADBS says is reviewed the same day in about 45 to 60 minutes (LADBS Counter Plan Check).
Can I get a permit for a new window opening in LA the same day?
Often. LADBS lists a new door or window opening among the residential project types reviewed through Counter Plan Check, which is usually done in about 45 to 60 minutes.
Which LADBS offices do Counter Plan Check?
LADBS lists its Metro (Downtown), Van Nuys, West LA, South LA, and San Pedro offices.
Before you build in Los Angeles
In Los Angeles, check two things for every back-yard project: whether LADBS requires a building permit, and what zoning allows for height and setbacks. Wood fences up to 10 feet skip the building permit but not zoning, block walls use express permits, and sheds of 120 square feet or less with no utilities fall outside the building code under LAMC 91.101.5.
Next steps for a Los Angeles project: run the 10-minute AHJ permit checklist, then read do I need a permit for a deck, fence height limits and corner lots, and shed permit requirements by size. The San Diego guide covers that city’s brush-zone fence and deck limits.
Last checked: October 2026.
Official sources
- LADBS: Express permits (no plan check required)
- LA City Planning: Fences and walls up to 8 feet
- LADBS: Accessory dwelling units
- LADBS: Heights of fences in residential zones, IB P/ZC 2023-002 (PDF)
- LADBS: Express permits, IB P/GI 2026-003 (PDF)
- LADBS: Counter plan check
- Los Angeles Municipal Code Sec. 91.106: Permits
- Los Angeles Municipal Code Sec. 91.101.5: Work not in scope (sheds up to 120 sq ft)
- LADBS: Fire Hazard Severity Zone Supplemental Checklist, 2025 CWUIC (PDF)
Comments
Post a Comment