A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Malibu, CA
Fielding ADU Builders handles ADU construction, garage conversions, and room additions in Malibu, CA. This page covers what makes building here different: steep lots, coastal setback rules, wildfire-zone material requirements, and a housing stock that ranges from 1950s beach cottages to newer hillside homes. Malibu jobs move slower than a typical Los Angeles build because the terrain and the permit desk both demand more paperwork. You’ll find links to our three main services below, along with local pricing and the neighborhoods we work. Call (361) 315-4177 when you’re ready to talk numbers.
Why Malibu Homes Are Different
Malibu lots are not flat. Many sit on slopes or benches cut into the Santa Monica Mountains, which means foundation work, retaining walls, and drainage become part of almost every project. A garage conversion in Point Dume and one in Malibu Park face different soil, different setbacks, and often different fire-zone requirements.
Coastal Malibu is governed by the California Coastal Commission, which reviews many additions and ADUs with a stricter eye than the city alone. Hillside properties inside the Santa Monica Mountains or along roads like Malibu Canyon and Las Flores Canyon trigger additional geotechnical review before a permit gets issued. Wildfire safety codes also shape what we build: exterior siding, roof materials, and venting often need to meet WUI (Wildland-Urban Interface) standards. That is one reason we specify James Hardie fiber cement siding on so many conventional builds out here. It holds up against salt air and meets the fire-resistant requirements without fighting the architectural review board.
The city’s building department also has a specific submittal process for ADUs under California state law, including pre-approved plan sets and local sewer and septic requirements where a home is not connected to city utilities. None of this should scare you off. It just means the contractor you hire in Malibu needs to have read the right codes before they dig.
Our Main Malibu Services
Most Malibu homeowners call us about one of three projects: adding square footage to the main house, converting an existing garage into living space, or building a detached ADU in the yard. Each has its own Malibu page with pricing and local details.
Room Addition Contractor in Malibu
A Malibu room addition usually means a primary suite, a second story, or a ground-floor expansion that gives a hillside home more usable space without moving. We handle the structural work, the permit set, and the finish work under one written price. On steep Malibu lots, additions often need caissons or a reinforced foundation, which is a different scope than a flat-lot build in the Valley. We walk you through what the geotech report says and price it before any work starts. See the full breakdown on our Room Addition Contractor in Malibu page.
Garage Conversion Contractor in Malibu
Converting a garage in Malibu is often the least expensive way to add a rental unit or a home office without disturbing the yard. The work involves insulating the existing shell, upgrading the slab, adding a full bath and kitchenette, and running new electrical. Many Malibu garages were built as carports or single-car structures in the 1950s and 1960s, so we frequently sister new framing into old walls and replace the roof line. Permits are required, and we pull them. Details and local pricing live on the Garage Conversion Contractor in Malibu page.
ADU Builders in Malibu
Detached ADUs in Malibu work best when the build method matches the lot. On a flat, accessible parcel, a prefab unit from Abodu or Cover can be placed in weeks rather than months. On a steep hillside with tight access, a conventional stick-built ADU is often the only option that passes structural and fire review. Reed Calloway and the Fielding crew have built ADUs across western Los Angeles County. We price the design, the site work, the utility runs, and the finish work as one number before you sign. Read the full breakdown on the ADU Builders in Malibu page.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Malibu
We install and finish units from Abodu, Cover, and Dvele, and we build conventional additions and ADUs with James Hardie siding. Parts and materials for these systems are stocked through our Los Angeles supply channels, which keeps lead times predictable for Malibu jobs. See our brands for the full list of what we service.
Pricing for ADU Company in Malibu, CA
| Service | Typical range in Malibu |
|---|---|
| Garage conversion | $95,000 – $155,000 |
| Detached ADU (prefab) | $130,000 – $220,000 |
| Detached ADU (stick-built) | $220,000 – $380,000 |
| Room addition (single room) | $90,000 – $160,000 |
| Room addition (primary suite) | $140,000 – $230,000 |
| Foundation / slope work | $18,000 – $65,000 |
| Site utility runs (water, sewer, gas) | $8,000 – $30,000 |
| Fire-rated exterior upgrade | $12,000 – $40,000 |
| Permit and plan set | $6,000 – $25,000 |
Slope work and Coastal Commission review are the two things that push Malibu prices above a flat-lot build. The number you approve on day one is the number on the final invoice, no exceptions.
Neighborhoods We Serve in Malibu
Our crews work the full stretch of Malibu, from the flats near the coast up into the canyons and the hillside communities. Scheduling is coordinated from our Los Angeles office, and crews stage locally so we can reach most Malibu job sites within a standard workday window.
- Point Dume
- Malibu Park
- Malibu West
- Big Rock
- Las Flores Canyon
Service Area – Cities Near Malibu
Fielding ADU Builders serves Malibu and the surrounding western Los Angeles County and Ventura County communities. Wherever you are, the price goes in writing before work starts. Nearby cities we cover include Agoura Hills, CA, Westlake Village, CA, Thousand Oaks, CA, and Calabasas, CA.
Serving Malibu, CA - Our Local Coverage Area
We’re based in the Malibu area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About ADU Company in Malibu
Most Malibu ADUs run 6 to 14 months from first plan check to final inspection, with prefab units on the shorter end. Coastal Commission review, geotech reports, and WUI fire compliance add time that a flat-lot city build does not have. Call (361) 315-4177 for a schedule estimate tied to your specific lot.
Many do. Properties in the Coastal Zone need California Coastal Commission approval, and steep hillside lots add geotechnical and grading review. We handle the full permit path, from the first plan set through final sign-off. Call (361) 315-4177 and we’ll tell you what applies to your address.
No. Slope work, fire-rated materials, and additional review layers push most Malibu projects 15 to 30% above a comparable flat-lot build. We put the full price in writing before any work starts, so you will never see a change order that was not already on the page. Call (361) 315-4177 for a free estimate.
Fielding ADU Builders serves Malibu with written pricing, permitted work, and a one-year written guarantee on every project. Call (361) 315-4177 to schedule your free estimate.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Malibu Customers Say
"Room addition over the back patio. Framing is square, windows are tight, and the roofline matches."
- Danny L."Foundation and slab poured on schedule. Crew kept the yard orderly."
- Marian J."Garage conversion with a new bath and kitchenette. Permit was handled by them. Inspection passed first time."
- Sheila B.
