Custom ADU Remodeling in Malibu – Expand Your Property's Potential
Malibu's coastal setting adds an extra layer of review, from the Local Coastal Program to Coastal Commission approval, on top of standard City of Malibu building permits. We navigate the full entitlement process to deliver a custom ADU designed for coastal living and your property's unique setting.
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- Licensed Class B General Contractor
- Turnkey ADU Design & Permitting
ADU Remodeling in Malibu – Expand Your Property with Custom ADUs by KN Remodeling
For more than thirty years, KN Remodeling has been turning properties into high-value multi-dwelling estates. We are a licensed, insured, family-owned design-build team, so one expert crew carries your accessory dwelling unit project from the first sketch to the final walkthrough, ensuring the structural framing, plumbing, and insulation are done properly rather than rushed. Free in-home consultation, honest pricing, a strict schedule we keep, and a written warranty on every ADU build.
Your Trusted Local ADU Partner
Whether you picture a guest house for family or a rental unit to help offset the cost of coastal living, KN Remodeling is here to bring your ADU vision to life in Malibu.
Every property in Malibu sits within the California Coastal Zone, so every ADU application is reviewed for compliance with the Local Coastal Program in addition to the standard ADU permit, and most lots rely on septic systems that require a current percolation test. The process has gotten meaningfully faster recently: as of October 2025, Coastal Commission appeals are no longer allowed on Malibu ADUs, and local review is capped at 60 days. Most of the city also sits in a Very High Fire Hazard Severity Zone, requiring Chapter 7A fire-hardened construction. We coordinate the City review, Coastal Development Permit, and septic evaluation together so nothing holds up your timeline.
Our Malibu ADU Construction Services
Fully licensed building team ensuring all structural work complies with City of Los Angeles building codes and safety standards.
Complete architectural blueprint and planning collaboration. No need to manage multiple contractors—we oversee your build from start to finish.
Custom standalone secondary dwelling units designed to integrate seamlessly with your yard layout and aesthetic.
Specialized conversion solutions to transform underutilized garages into comfortable, modern rental units or guest suites.
Skilled specialists covering every detail: structural framing, electrical grids, sub-panel installations, and custom interior finishes.
We source top-quality building materials and energy-efficient systems to guarantee lasting durability and lower utility bills.
The KN Remodeling ADU Process
Here is what you can expect when you partner with us for your Malibu ADU project:
Ready to Build Your Dream ADU in Malibu?
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Locations We Serve
KN Remodeling provides expert construction services of ADU in Los Angeles and Neighborhoods in LA, ensuring high-quality, customized solutions for your additional dwelling unit needs.
San Fernando Valley
Los Angeles
South Bay & Peninsula
Ventura County
What Our Clients Are Saying
We are deeply honored by the feedback from our extensive list of 100+clients regarding our services.
Frequently Asked Questions
Malibu ADUs typically cost more than projects elsewhere in Los Angeles County, largely due to septic requirements, geotechnical review, and the added coastal permitting layer. As a general guide:
- Garage conversion or Junior ADU (JADU): roughly $120,000 to $180,000
- Detached custom ADU (500 to 800 sq ft): roughly $220,000 to $320,000
- Larger detached luxury ADU (800 to 1,200+ sq ft): $340,000 to $450,000+
Most Malibu properties rely on septic systems rather than sewer connections, and many sit on hillside or canyon lots requiring geotechnical review. We provide a written, itemized estimate after your free in-home consultation.
Malibu's timeline runs longer than most LA-area cities because every ADU project needs both city and coastal approval.
- On-site construction typically takes six to eight months once permits are issued
- Design and permitting, including the Coastal Development Permit process, generally take eight to fourteen months, since coastal review has no fixed statutory deadline the way standard city ADU review does
- A 2025 state law (AB 462) removed the California Coastal Commission's authority to hear appeals on local Coastal Development Permits for ADUs, which has shortened what used to be a much longer process for many projects
We build a realistic, Malibu-specific schedule into your proposal from the start, rather than quoting a standard inland timeline.
Yes. KN Remodeling is a licensed Class B general contractor in California with more than 30 years of building experience, including coastal and hillside projects, and we carry full general liability and workers' compensation insurance.
- A dedicated project manager oversees your Malibu ADU through both the City and coastal permitting tracks
- Structural, electrical, and plumbing work is performed by licensed trades and inspected by the City
- You work with a consistent, experienced crew familiar with septic, geotechnical, and fire-zone requirements
- All structural and construction work is backed by our written warranty
Yes, and Malibu requires two layers of approval rather than one. Because the entire City of Malibu is located within the California Coastal Zone, every ADU application is reviewed against both the Local Coastal Program and standard building code.
- The City's Building Safety Division handles the local building permit, grading permit, and plan check
- A Coastal Development Permit (CDP) is also required for most projects, reviewed under Malibu's certified Local Coastal Program
- The entire city is designated a Very High Fire Hazard Severity Zone, which adds fire-hardened construction requirements to every project
- Most properties rely on a septic system, so a current percolation test is typically required as part of the application
We coordinate both the City and coastal permitting tracks for you, so you have a single point of contact through the entire process.
Malibu's coastal geography and regulatory environment make early planning especially important:
- Septic Capacity: most Malibu homes are on septic systems, so a percolation test and capacity review are needed before adding bedrooms or plumbing fixtures
- Fire Hardening: the entire city sits in a Very High Fire Hazard Severity Zone, requiring ember-resistant vents, fire-rated materials, and defensible-space landscaping
- Canyon and Bluff Lots: geotechnical review and engineered foundations are common on sloped or canyon-adjacent properties
- Coastal Timeline: budgeting extra months for the Coastal Development Permit, on top of standard city review, keeps expectations realistic
We evaluate all of these site-specific conditions during your free initial consultation.