Before You Build in Gardena, CA: Permit & Rule Checklist (2026)

Gardena caps fences at eight feet along side and rear property lines. In the required front yard setback, fences and hedges are limited to three and one-half feet on interior lots and three feet on corner lots.

Gardena requires a building permit for fences. Fence permits are typically issued over the counter within about three business days, and fences in the public right-of-way need an additional encroachment permit.

Gardena treats retaining walls as fences and walls under zoning Chapter 18.42, and retaining wall construction requires a building permit from the Building Division for structural review.

Gardena zoning governs fences on side and rear property lines shared with neighbors, capping them at eight feet and requiring corner cutbacks where two corner-lot rear yards abut for sightline safety.

Gardena requires fences and walls visible from the street to be compatible with the site's architecture and softened with landscaping. Screening walls between commercial uses and homes must be decorative masonry.

Building a swimming pool, spa, or hot tub in Gardena requires a building permit from the Community Development Department, plus separate plumbing and electrical permits. Because a construction permit is issued, the pool must include the drowning-prevention safety features mandated by California's Swimming Pool Safety Act.

Whenever Gardena issues a permit for a new or remodeled residential pool or spa, California's Swimming Pool Safety Act requires at least two of seven drowning-prevention features, such as a 60-inch enclosure, removable mesh fencing, an approved safety cover, exit alarms, self-latching door devices, or an in-water alarm.

Hot tubs and spas in Gardena are regulated like pools: Municipal Code Section 18.42.090 keeps them out of the front yard and at least five feet from lot lines and structures, and installation requires building, plumbing, and electrical permits. An uncovered spa needs a compliant safety barrier.

Gardena enforces California's Swimming Pool Safety Act, which requires a pool barrier at least 60 inches (five feet) high with self-closing, self-latching gates that open away from the pool. Gaps cannot pass a four-inch sphere, and ground clearance cannot exceed two inches.

Above-ground pools in Gardena are treated as swimming pools under Municipal Code Section 18.42.090, so they cannot sit in a front yard or within five feet of any lot line, building, structure, or utility easement. They also need a permit and the same California barrier standards.

Gardena regulates accessory dwelling units under Gardena Municipal Code Chapter 18.13, implementing California Government Code Sections 66310 through 66342. ADUs are allowed on any residentially or mixed-use zoned lot with an existing or proposed single-family or multifamily dwelling, and applications are decided ministerially.

Gardena allows an attached or detached garage to be converted into an accessory dwelling unit under Gardena Municipal Code Chapter 18.13. A converted or replacement structure built in the same location and dimensions needs no added setback, and demolished garage parking need not be replaced.

Gardena regulates detached accessory buildings such as sheds through the R-1 single-family residential zone standards in Gardena Municipal Code Chapter 18.12, together with the general development standards of Chapter 18.42. Accessory buildings must be customary to the residential use and comply with placement, setback, and lot-coverage rules.

Gardena treats carports as accessory structures and required parking, governed by the R-1 zone standards in Gardena Municipal Code Chapter 18.12 and the parking provisions of Chapter 18.40. Covered parking must meet the setback, separation, and lot-coverage rules that apply to accessory buildings.

Gardena has no separate tiny-home ordinance. A permanent tiny house on a foundation is regulated as an accessory dwelling unit under Gardena Municipal Code Chapter 18.13, while a tiny house on wheels is treated as a recreational vehicle and cannot be used as a permanent dwelling on residential property.

Open burning of trash, leaves and yard waste is effectively prohibited in Gardena. The city adopts the Los Angeles County Fire Code (Municipal Code Chapter 8.08), which requires a permit for open burning, and South Coast AQMD burn-day rules bar routine outdoor burning in this dense urban area.

Outdoor fire pits in Gardena are governed by the Los Angeles County Fire Code, adopted as Municipal Code Chapter 8.08. Small recreational fires and approved portable fireplaces are allowed, but must burn clean fuel, stay clear of structures, and be attended. The LA County Fire Department enforces the rules.

Removing any tree on a Gardena street, parkway, or public place requires a Tree Removal Permit from the Public Works Director under GMC Section 13.60.080. The Director authorizes street-tree removal only for defined reasons in Section 13.60.110. Gardena has no general permit to remove a healthy private-property tree.

In Gardena, no one may trim or prune any tree on a City street, parkway, or public place without a Tree Trimming Permit from the Public Works Director under GMC Section 13.60.080. Topping is prohibited. Trimming a private-yard tree that does not affect the street generally needs no permit.

Most of Gardena is served by Golden State Water Company (Southwest system), not a City utility. Golden State Water limits outdoor watering to three days per week on an address-based schedule, ideally 7 PM to 8 AM. The provider, not the City, enforces these outdoor watering rules.