Malibu ADU service areas
ADU Builder Service Areas in Malibu and Topanga
Our work runs the length of the Malibu coast and into the canyons behind it. Each neighborhood brings its own lot types and review questions, and one community just outside the city line is permitted by the county instead.
Malibu service areas
ADU Builder Pages by Malibu Neighborhood
City of Malibu
ADU Builder in Point Dume
Flat mesa lots and bluff-top parcels on the promontory, many rebuilt after Woolsey. Detached cottages, studio conversions and ADUs planned into rebuilds.
See Point DumeCity of Malibu
ADU Builder in Malibu Colony
Small gated beachfront lots near the lagoon. Junior ADUs, attached units and lane-side garage conversions, with Civic Center wastewater status checked first.
See Malibu ColonyCity of Malibu
ADU Builder in Carbon Beach
Narrow oceanfront strips between PCH and the sand. Garage-level units, lower-floor ADUs and rebuild designs under full coastal review.
See Carbon BeachCity of Malibu
ADU Builder in Broad Beach
West Malibu oceanfront and inland-side lots along Broad Beach Road, where shoreline erosion shapes beachfront ADUs and inland yards allow more.
See Broad BeachCity of Malibu
ADU Builder in Big Rock
Hillside lots above the highway on a mesa with a landslide history. Geology-first ADUs over garages and in conversions, including fire rebuilds.
See Big RockCity of Malibu (confirm the parcel's jurisdiction for upper-canyon lots)
ADU Builder in Las Flores
Beach lots and a steep canyon where upper parcels may be county land. Jurisdiction checks, debris-aware siting and rebuild ADUs.
See Las FloresCity of Malibu
ADU Builder in La Costa
Eastern Malibu beach houses and hillside streets on either side of PCH, with rebuild ADUs below and garage-based units above.
See La CostaCity of Malibu
ADU Builder in Malibu Park
Larger semi-rural lots behind Zuma with room for detached units, barn and studio conversions and more than one ADU per parcel.
See Malibu ParkCity of Malibu
ADU Builder in Serra Retreat
A guard-gated, wooded enclave near the lagoon. ADUs planned around association rules, protected trees and wastewater status.
See Serra RetreatCity of Malibu
ADU Builder in Trancas
Canyon parcels, creekside lots and older neighborhoods near the coast in west Malibu, with habitat buffers mapped before design.
See TrancasUnincorporated Los Angeles County
ADU Builder in Topanga
Unincorporated canyon parcels permitted by Los Angeles County under its Santa Monica Mountains coastal rules, with septic and fire planning.
See TopangaMalibu Neighborhoods We Build ADUs In
From west to east, the city changes character quickly. Trancas and Broad Beach mix canyon parcels, creekside lots and oceanfront homes. Malibu Park offers larger, semi-rural lots in the hills behind Zuma. Point Dume combines a broad, flat mesa with bluff-top parcels, many of them rebuilt after the Woolsey Fire.
Near the Civic Center, Malibu Colony and Serra Retreat are gated communities with their own associations and wastewater questions tied to the city's treatment project. Further east, Carbon Beach, La Costa, Las Flores and Big Rock line the highway with narrow beach lots below and steep hillside streets above, an area hit hard by the 2025 Palisades Fire.
City of Malibu or Los Angeles County: Who Permits Your ADU
Ten of our eleven service areas are inside the City of Malibu, where the Community Development Department reviews ADUs after checking them against the city's Local Coastal Program. Environmental Health weighs in on septic capacity, while county fire officials look at driveways, turnarounds and brush clearance.
Topanga is the exception. As unincorporated land, it falls under Los Angeles County for zoning, building permits and coastal review. Upper Las Flores Canyon can also cross into county territory, so we confirm each parcel's jurisdiction before design. Getting the agency right at the start avoids drawing to the wrong set of rules.
Coastal, Canyon and Hillside ADU Lots Across Malibu
Beachfront lots on Carbon, Broad and La Costa beaches and in the Colony share a set of issues: tight footprints, deep foundations, wave exposure and coastal setbacks. These usually lead to junior ADUs, attached units and garage-level conversions rather than detached buildings.
Hillside and canyon lots in Big Rock, Las Flores, Trancas and Topanga raise geology, drainage and fire access questions, and often favor units over garages or conversions of existing structures. The flatter, larger lots of Point Dume and Malibu Park are where detached cottages most often fit, subject to septic and fuel modification.
Fire Rebuilds and ADUs in Malibu Communities
Three major fires have reshaped parts of our service area in less than a decade: Woolsey in 2018, Franklin in December 2024 and Palisades in January 2025. Owners rebuilding in any of these neighborhoods have an opportunity to plan an ADU alongside the new house, sharing septic design, utilities and fire access.
We approach every rebuild ADU with the same questions: what the current city or county rules allow, how the unit fits the rebuilt site plan, and whether it can be completed in a sequence that helps the family get back onto the property.
ADU Build and Finish Photos
FAQs
Malibu ADU Service Area Questions
Do you build ADUs in every part of Malibu?
We cover the neighborhoods listed on this page, from Trancas and Broad Beach in the west to La Costa and Las Flores in the east. If your property is nearby but not listed, describe it in the consultation form and we will let you know.
Is Topanga part of the City of Malibu?
No. Topanga is unincorporated Los Angeles County, so ADU permits there come from the county rather than the city.
Do ADU rules differ between Malibu neighborhoods?
The city's rules are the same citywide, but the site conditions differ a great deal. Beachfront, bluff, canyon and habitat-adjacent lots each trigger different reviews and reports.
Do gated communities in Malibu allow ADUs?
Associations can apply reasonable rules on appearance and construction, but state law limits their ability to prohibit or unreasonably restrict ADUs. We coordinate with associations in the Colony and Serra Retreat.
ADU consultation
Request an ADU Consultation Anywhere in Malibu
Tell us which neighborhood the property is in and what you have in mind. A member of our team will respond by phone or email within 24 hours.
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