Custom ADU Remodeling in Brentwood – Expand Your Property's Potential
From the flats near San Vicente Boulevard to the canyons above Sunset, Brentwood properties offer flexible space for detached ADUs, garage conversions, and private guest suites. We manage City of Los Angeles permitting, including hillside and slope requirements where applicable, from first sketch to final walkthrough.
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- Licensed Class B General Contractor
- Turnkey ADU Design & Permitting
ADU Remodeling in Brentwood – 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 detached guest house tucked into a canyon-adjacent lot or a garage conversion on the flats, KN Remodeling is here to bring your ADU vision to life in Brentwood.
Brentwood spans both flat residential streets and hillside canyons like Sullivan Canyon and Mandeville Canyon, and the two call for different planning. Flat-lot ADUs move through standard City of Los Angeles review, while hillside and canyon-adjacent properties fall under the city's Baseline Hillside Ordinance, with grading limits tied to slope and, on many streets, Very High Fire Hazard Severity Zone rules that require fire-hardened construction. We identify which set of rules applies to your specific lot before design begins.
Our Brentwood 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 Brentwood ADU project:
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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
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Frequently Asked Questions
Pricing depends on the size of the unit, the finish level, and whether your lot is flat or on the hillside. As a general guide for Brentwood:
- Garage conversion or Junior ADU (JADU): roughly $100,000 to $160,000
- Detached custom ADU (500 to 800 sq ft): roughly $200,000 to $300,000
- Larger detached luxury ADU (800 to 1,200+ sq ft): $320,000 to $400,000+
Hillside properties north of Sunset Boulevard, including Brentwood Park and Mandeville Canyon, typically cost more due to grading, retaining walls, and geotechnical requirements. We provide a written, itemized estimate after your free in-home consultation.
Most detached ADU construction in Brentwood takes three to five months of active on-site work.
- Design, structural engineering, and Title 24 compliance run before permitting and typically add two to four months
- Hillside lots north of Sunset (Brentwood Park, Mandeville Canyon) often require a soils and geology report under LADBS's Baseline Hillside Ordinance, which can add several weeks to plan check
- Properties in the City's Very High Fire Hazard Severity Zone also need fire-hardening details reviewed as part of the permit set
You'll get a written schedule at kickoff and regular updates as the project moves forward.
Yes. KN Remodeling is a licensed Class B general contractor in California with more than 30 years of building experience, and we carry full general liability and workers' compensation insurance.
- A dedicated project manager oversees your ADU from concept through completion
- Structural framing, electrical panels, and plumbing connections are handled by licensed trades and signed off by city inspectors
- You work with a reliable, consistent crew rather than rotating subcontractors
- All structural and construction work is backed by our written warranty
Yes, building permits are required for every new ADU or conversion. Brentwood is part of the City of Los Angeles, so plans are submitted through the Los Angeles Department of Building and Safety (LADBS).
- Hillside parcels north of Sunset Boulevard fall under LAMC's Baseline Hillside Ordinance, which requires a slope analysis and geotechnical review before permit issuance
- Much of hillside Brentwood is also mapped within a Very High Fire Hazard Severity Zone, which adds brush clearance and fire-hardened construction requirements
- Flatter lots south of Sunset generally follow standard R1 ADU review without the added hillside layers
We handle the architectural filings, engineering reports, City reviews, and inspections so you don't have to manage LADBS on your own.
Brentwood's geography changes significantly from block to block, so planning starts with understanding your specific site:
- North of Sunset: Brentwood Park and Mandeville Canyon properties often require engineered retaining walls, geotechnical review, and fire-hardened materials for Very High Fire Hazard Severity Zone compliance
- South of Sunset: flatter, larger lots typically allow a more straightforward detached ADU or garage conversion
- Equipment Access: narrower hillside streets and canyon roads can affect how materials and equipment reach the site
- Utility Connections: older Brentwood homes may need panel upgrades to support a new ADU's electrical load
We evaluate all of these site-specific conditions during your free initial consultation.