# ADU Builder & Home Additions in Malibu, CA | Remodel Your Vibe [Browser-friendly HTML version](https://www.remodelyourvibe.com/website-guide/pages/services/adus-additions/malibu/index) Source: https://www.remodelyourvibe.com/services/adus-additions/malibu Last modified: 2026-09-24T00:00:00.000Z Text part: 1 of 1 [Full website text index](https://www.remodelyourvibe.com/llms-full.txt) | [Services by city](https://www.remodelyourvibe.com/llms/services-by-city-005.txt) | [Previous page](https://www.remodelyourvibe.com/llms/pages/services/adus-additions/santa-monica/index.txt) | [Next page](https://www.remodelyourvibe.com/llms/pages/services/adus-additions/pacific-palisades/index.txt) --- Image: Detached backyard ADU with wood siding and black-framed glass doors at dusk 1. [Home](https://www.remodelyourvibe.com/) 1. [Services](https://www.remodelyourvibe.com/services) 1. [ADUs & Additions](https://www.remodelyourvibe.com/services/adus-additions) 1. Malibu Design · Permit · Build ### ADUs & Additions in Malibu Detached ADUs, garage conversions and additions, from plans to move-in. [Book a Consultation](https://www.remodelyourvibe.com/contact-us) [Call 818-300-2393](tel:+18183002393) #### Built for Malibu Homes Septic capacity usually sets the ceiling long before design does. The wastewater system determines how many bedrooms an addition can add and where a pool, its equipment and backwash line are allowed to sit. Because every parcel sits in the coastal zone, we sequence geology, biology and drainage work alongside the coastal permit application rather than after it. On blufftop and canyon sites we also budget for long haul distances and wind-exposed material choices. Everything from tight beachfront strips between the highway and the sand to multi-acre canyon and ridge parcels with steep buildable pads and long private driveways. We are a design-build team, which means the people who draw your project are the people who build it. Design, engineering, permits and construction run through one project manager and our own crews, so nothing gets lost in a handoff between a salesperson and a subcontractor. We are licensed, bonded and insured, [CSLB license #1119054](https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1119054) . Permits in Malibu: The city runs its own Building Safety Division and issues its own building and grading permits. The entire city lies within the coastal zone, and because the Local Coastal Program was certified in 2002 the city itself issues coastal development permits under its Land Use Plan and Local Implementation Plan, including review against the ESHA overlay. Onsite wastewater treatment systems are permitted through the Community Development Department's Wastewater Management and Environmental Health staff, and installing a new system requires its own coastal development permit. Processing depends heavily on required geotechnical, biological and wastewater studies, so schedules vary considerably from parcel to parcel. Permit details checked September 2026 against [City of Malibu](https://www.malibucity.org/856/City-Departments) . Rules change, so we confirm them again for your parcel. What We Build - Onsite wastewater capacity analysis - Coastal development permit submittal support - Geotechnical and shoring coordination - Detached ADUs, ground-up - Garage conversions to living space - Junior ADUs within the main house - Room additions and bump-outs - Second-story additions - Full kitchens and bathrooms in the ADU - Separate utility metering where required - Private entries, patios and landscaping - Plans, engineering and city submittals - Title 24 energy compliance Local Conditions #### What to Know in Malibu These local conditions change the scope, the schedule and the budget. 01 Nearly every property runs on an onsite wastewater system rather than a sewer, and its rated capacity limits added bedrooms and constrains where a pool, equipment pad and backwash line can sit. 02 Blufftop and canyon parcels carry documented landslide and erosion history, so geotechnical setbacks and shoring design are settled before any pool or deck layout is finalized. 03 Sustained onshore wind and salt spray degrade untreated metal, cabinetry and fabric fast, which changes material selection for outdoor kitchens, pergolas and pool equipment. 04 Long approaches along winding canyon roads and the highway make concrete pours, crane days and soil export significantly more expensive to stage than comparable flatland work. Areas we serve in Malibu:Point DumeMalibu ColonySerra RetreatBig RockMalibu ParkTrancas Canyon Investment #### What It Costs in Malibu Real Southern California price ranges, not teaser numbers. ##### Detached ADU $150,000 to $400,000+ What moves it: square footage, finish level, utility runs, and site access; garage conversions typically run well below a ground-up detached build ##### Garage conversion ADU $80,000 to $180,000 What moves it: whether the existing slab and framing meet current code, how far utilities have to run, and the finish level of the kitchen and bathroom ##### Plans, drawings and permit management $4,500 to $25,000+ What moves it: project type and size, whether structural engineering, Title 24 or a soils report is required, and how many jurisdictions or review bodies are involved Your lot, access and finishes set the price. We walk the site, then show you where every dollar goes. [Get a line-item price for your Malibu property](https://www.remodelyourvibe.com/contact-us) The Process #### How We Work in Malibu 01 ##### Feasibility We check lot size, setbacks, utilities and access to confirm what your property will actually support. 02 ##### Design & 3D Layout, elevations and finishes, modeled in 3D so you approve the unit before submittal. 03 ##### Plans & Permits We prepare the full drawing set, handle engineering and Title 24, and manage the city submittal and corrections. In Malibu that submittal goes to City of Malibu Building Safety Division (Community Development Department). 04 ##### Foundation & Framing Site prep, foundation, framing and dry-in by our own crews. 05 ##### Systems & Finishes Electrical, plumbing, HVAC, insulation, then kitchen, bath and interior finishes. 06 ##### Final Inspection We pass final inspection, walk the unit with you and hand over the keys. Questions #### What Malibu Homeowners Ask Who issues the permits for this work in Malibu? City of Malibu Building Safety Division (Community Development Department). The city runs its own Building Safety Division and issues its own building and grading permits. The entire city lies within the coastal zone, and because the Local Coastal Program was certified in 2002 the city itself issues coastal development permits under its Land Use Plan and Local Implementation Plan, including review against the ESHA overlay. Onsite wastewater treatment systems are permitted through the Community Development Department's Wastewater Management and Environmental Health staff, and installing a new system requires its own coastal development permit. Processing depends heavily on required geotechnical, biological and wastewater studies, so schedules vary considerably from parcel to parcel. We prepare the drawings, make the submittal and handle plan-check corrections ourselves, so you are not the one chasing plan check. What makes building in Malibu different? Everything from tight beachfront strips between the highway and the sand to multi-acre canyon and ridge parcels with steep buildable pads and long private driveways. One local condition that shapes the work: Nearly every property runs on an onsite wastewater system rather than a sewer, and its rated capacity limits added bedrooms and constrains where a pool, equipment pad and backwash line can sit. Which parts of Malibu do you work in? All of it, including Point Dume, Malibu Colony, Serra Retreat and Big Rock. Our crews run every job out of our Cahuenga Pass base in Los Angeles, with our own people on site. What does an ADU or addition cost in Malibu? Detached ADU: generally $150,000 to $400,000+ across Southern California. What moves it is square footage, finish level, utility runs, and site access; garage conversions typically run well below a ground-up detached build. We give line-item pricing after seeing the site rather than quoting a number over the phone. How long does an ADU take start to finish? Plan a realistic year. Design and engineering typically take one to three months, city plan check and corrections add several more, and construction usually runs four to eight months depending on size and site access. Is a garage conversion cheaper than a detached ADU? Usually yes, and often substantially, because the foundation, walls and roof already exist. The trade-offs are that you lose the garage, and older slabs and framing sometimes need upgrading to meet current code. Can I rent the ADU out? California ADU law is designed to allow long-term rental, and an ADU is one of the few ways to add rentable square footage to a single-family lot. Short-term rental rules vary by city, so confirm your local ordinance before counting on that income. Do you handle the permits? Yes. Plans, engineering, Title 24 and the city submittal are all handled in-house, including responding to plan-check corrections. That is a service we sell on its own, so it is not something we hand off. #### More Services in Malibu [Pool & Spa Remodeling in Malibu](https://www.remodelyourvibe.com/services/swimming-pool-spa/malibu) [Backyard & Outdoor Living in Malibu](https://www.remodelyourvibe.com/services/exterior-remodeling/malibu) [Kitchen, Bath & Interior Remodeling in Malibu](https://www.remodelyourvibe.com/services/interior-remodeling/malibu) [Plans, Permits & Design in Malibu](https://www.remodelyourvibe.com/services/plans-permits/malibu) [Everything we build in Malibu](https://www.remodelyourvibe.com/service-areas/malibu) #### ADUs & Additions Nearby [ADUs & Additions in Pacific Palisades](https://www.remodelyourvibe.com/services/adus-additions/pacific-palisades) [ADUs & Additions in Santa Monica](https://www.remodelyourvibe.com/services/adus-additions/santa-monica) [ADUs & Additions in Calabasas](https://www.remodelyourvibe.com/services/adus-additions/calabasas) [ADUs & Additions in Agoura Hills](https://www.remodelyourvibe.com/services/adus-additions/agoura-hills) [ADUs & Additions in Westlake Village](https://www.remodelyourvibe.com/services/adus-additions/westlake-village) [ADUs & Additions in Topanga](https://www.remodelyourvibe.com/services/adus-additions/topanga) Planning Guides #### Before You Build in Malibu Costs, materials and process notes from our own projects. [Malibu Backyard Remodel Cost: The Coastal Premium A Malibu backyard remodel runs $90,000 to $300,000. Here is how that splits across hardscape, shade, pool work and soft costs, and why coastal rules add 15 to 30 percent. Read guide](https://www.remodelyourvibe.com/articles/malibu-backyard-remodel-cost) [Outdoor Living in Malibu: Coastal Design Inspiration Malibu's coastal setting demands special considerations for outdoor living. Explore design ideas that embrace ocean views while withstanding salt air and marine conditions. Read guide](https://www.remodelyourvibe.com/articles/outdoor-living-malibu) [ADU Cost Breakdown by Size in Los Angeles A detached ADU in Los Angeles runs $150,000 to $400,000-plus. Here is the real cost broken down by unit size, with the soft costs, utility work and finish decisions that move the number. Read guide](https://www.remodelyourvibe.com/articles/adu-cost-breakdown-by-size-los-angeles) [Garage Conversion to ADU: The Step-by-Step Build A garage conversion runs $80,000 to $180,000 in Southern California. Here is the real sequence, from slab testing and plan check to the raised floor, the mini-split and final sign-off. Read guide](https://www.remodelyourvibe.com/articles/garage-conversion-adu-step-by-step) #### Planning an ADU in Malibu? Sit down with your project manager and get an accurate estimate. We call you back within one business day. [Book a Consultation](https://www.remodelyourvibe.com/contact-us) [818-300-2393](tel:+18183002393) Licensed, bonded & insured · [CSLB license #1119054](https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1119054) --- End of text part 1 of 1. This page is complete.