Serving 90210 · 90211 · 90212 and West Hollywood, Bel Air, Westwood
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.
Every neighborhood has its own architectural character, permit jurisdiction, and finish-level expectations. Here's how we approach adu construction in Beverly Hills specifically.
Beverly Hills runs its own building department (separate from LA City). Permit timelines and requirements differ from neighboring areas — designated historic homes have additional review. We handle the entire process so you don't have to navigate it.
Many BH homes are in landmark or historic-preservation zones with exterior alteration limits. We design around those constraints rather than fight them.
Beverly Hills clients typically expect high-end finishes — slab countertops, full custom cabinetry, high-grade appliances. We source through trade channels to keep finish quality high without unnecessary markup.
Beverly Hills B&S applies its own ADU code section alongside state law. State law sets the floor; the city can layer additional requirements around setbacks, parking, and design review on landmark or historic parcels. Detached ADUs on R-1 parcels are generally permitted under state preemption, but the specific siting envelope on a Beverly Hills parcel is often tighter than state law alone would suggest. We verify the local code path against the specific parcel before committing the design to a particular footprint.
Many Beverly Hills R-1 parcels north of Wilshire have rear-yard depth and side-yard width that constrains where a maximum-size detached ADU can physically sit while meeting setback minimums. On some parcels, the only feasible footprint is a junior ADU or a converted garage rather than a new detached structure. We site-walk every Beverly Hills ADU project against the survey before committing to a design — the parcel's actual dimensions dictate what fits.
The dominant Beverly Hills ADU motivation is adult-child housing, in-law residency, or staff quarters rather than open-market rental income. That sets the program (full kitchen, primary bed and bath, separate entrance, finishes matching the main house) and the budget tier. We design the ADU as a finished extension of the main residence rather than as a rental-grade build-out, because that's what the client base consistently asks for.
Lot review, setbacks, height limits, utility access, soil assessment. We tell you up front whether your project pencils — square footage, code constraints, expected timeline.
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).
Plan check submission, energy compliance (Title 24), structural engineering, separate or shared utility service. We deal with LADBS or your municipal building department.
New foundations or attached construction, framing, mechanical/electrical/plumbing (MEP) rough-in, exterior, and full interior finishes — kitchen, bath, flooring, HVAC, electrical.
Final inspections, Certificate of Occupancy, and walkthrough. We hand you a unit you can live in, rent, or use as a guest house.
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.
City of Beverly Hills Building & Safety handles all permits — separate from LA County. Plan checks typically run 3–6 weeks for kitchen remodels, longer for structural work or historic-zone properties.
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I was nervous at first, but the team at Design Onn Point was extremely communicative and made me feel comfortable. They arrived on time each day, kept me updated, and answered all my questions. The crew was professional,…
Design Onn Point turned my kitchen into a beautiful space. The professional was knowledgeable, polite and kept everything on schedule. I love the modern kitchen layout and the quality of the custom kitchen cabinets. High…
Design Onn Point was a delight from start to finish. The team was incredibly communicative, always answering my questions quickly and keeping me in the loop. They were punctual, showing up on time every day, and their pr…
Free consult, no obligation. Onn personally reviews every inquiry — usually replies within 1 business day.
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.
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.
Plan for 4–6 weeks of design, 4–6 weeks of permits, then 8–14 weeks of construction. Total: 4–7 months from first conversation to final walkthrough. Historic-zone properties run longer.
Yes — we're a few miles east in mid-city LA, so all of Beverly Hills (90210, 90211, 90212) is in our regular service area. Most of our team is on-site at your property.
Side-by-side comparison of detached ADUs and garage conversions for LA homeowners — costs, timelines, ROI, rental income, and which one adds more value on resale.
When you need a permit for an LA kitchen remodel, how LADBS plan-check works, typical timelines, and how to avoid the common mistakes.
Onn personally reviews every inquiry. Tell us about your project — Onn will be in touch within one business day.