ADU Construction in Los Angeles in Pacific Palisades
Serving 90272 and Santa Monica, Brentwood, Malibu
California's ADU laws have made backyard units one of the highest-leverage property improvements an LA homeowner can make. We design and build all three types — detached new builds, attached additions, and JADUs (Junior ADUs converted from existing space). End to end. Permits, plans, foundations, framing, finishes, and final inspections, all under one roof. You work directly with Onn from feasibility study through certificate of occupancy.
ADU Construction in Los Angeles specifically for Pacific Palisades
Every neighborhood has its own architectural character, permit jurisdiction, and finish-level expectations. Here's how we approach adu construction in los angeles in Pacific Palisades specifically.
Coastal climate adjustments
Salt air corrodes standard hardware and cabinet hinges within a few years. We spec marine-grade or PVD-coated finishes for Palisades projects — small upcharge, big longevity gain in the coastal environment.
Coastal Commission review
Properties west of the bluff line and certain other Palisades addresses trigger Coastal Commission review. Adds 2–4 months to permit timelines. We flag this early in discovery if it applies.
Site logistics
Many Palisades properties are on private streets with narrow access. Material deliveries and contractor parking get scheduled around access windows. We plan logistics into the timeline.
What we handle
Feasibility & site planning
Lot review, setbacks, height limits, utility access, soil assessment. We tell you up front whether your project pencils — square footage, code constraints, expected timeline.
Architectural design
Floor plans, elevations, 3D renderings. We design to maximize functional space within California's ADU size limits (up to 1,200 sq ft detached, 850 sq ft for studios/1-bedroom).
Permits & utilities
Plan check submission, energy compliance (Title 24), structural engineering, separate or shared utility service. We deal with LADBS or your municipal building department.
Foundation, framing, finish
New foundations or attached construction, framing, MEP rough-in, exterior, and full interior finishes — kitchen, bath, flooring, HVAC, electrical.
Final inspection & C of O
Final inspections, Certificate of Occupancy, and walkthrough. We hand you a unit you can live in, rent, or use as a guest house.
Pricing in Pacific Palisades
Typical detached ADU build cost in Los Angeles, all-in (design, permits, construction, finishes, utility hookups). Attached ADUs typically run lower; JADUs converting existing space lower still.
LADBS handles Palisades permits. Coastal Commission review can add 2–4 months for properties near the bluffs. Hillside-zone review for sloped properties. Plan check typically 8–14 weeks total.
Frequently asked
How big can my ADU be in Los Angeles? +
California state law allows detached ADUs up to 1,200 sq ft (or larger if your local jurisdiction permits). Attached ADUs are limited to 50% of the primary home's square footage or 1,200 sq ft, whichever is less. Junior ADUs (JADUs) are capped at 500 sq ft and must be inside the existing primary structure.
How long does an ADU project take? +
Plan to design and build a detached ADU in 9–14 months total: 2–3 months for design and permits, 6–10 months for construction. Attached ADUs and JADU conversions can run shorter.
Coastal Commission review — does it apply to me? +
Properties west of the bluff line typically trigger it. We do a pre-design check on your specific address so we know whether to plan for the additional review timeline.
Salt-air durability — how do you address it? +
PVD-coated faucets and hardware, stainless cabinet hinges, marine-grade fasteners on exterior work, sealed cabinet finishes. Adds 2–3% to material cost.
From the blog
ADU vs Garage Conversion: Which Makes Sense for Your LA Property?
A clear-eyed comparison of detached ADUs, attached ADUs, JADUs, and garage conversions for LA homeowners — costs, timelines, ROI, and which one fits your lot.
LA County Kitchen Permits Explained (2026 Edition)
When you actually need a permit for a kitchen remodel in Los Angeles, how the plan-check process works, typical timelines for LADBS and surrounding cities, and how to avoid the common mistakes.
ADU Construction in Los Angeles in other neighborhoods
Live in Pacific Palisades?
Onn personally reviews every inquiry. Tell us about your project — Onn will be in touch within one business day.