ADU Builders in Beverly Hills - Design, Permits and Build Under One Contract

Fast, Reliable ADU Builders Across Beverly Hills

If you live in Beverly Hills and want to add a backyard unit, convert a detached garage, or legalize an old pool house, the first question is usually what it will actually cost and how long the city will take to approve it. A backyard ADU in Beverly Hills typically runs $290,000 – $410,000 for a custom detached unit, while a garage conversion on the flats lands between $165,000 and $245,000. Those numbers reflect Beverly Hills’s separate building department and Architectural Commission review cycle, plus the condition of the older structures we’re usually working inside. Call (254) 602-5618 and we’ll give you a written price before any work starts.

Call (254) 602-5618

Key Takeaways

• Beverly Hills has its own building department and Architectural Commission (ARC), separate from LA City’s LADBS. ADU projects here clear state streamlining laws and then sit in a local design-review cycle that adds time and paperwork.
• A detached backyard ADU in Beverly Hills runs $290,000 – $410,000. A garage conversion in the flats runs $165,000 – $245,000. Hillside work north of Sunset costs more because of soils reports and engineered foundations.
• The most common Beverly Hills ADU project is legalizing or converting an existing pool house, detached garage, or unpermitted guest cottage, many of which date to the 1920s – 1950s.
• Our crews work under The Kingswell Guarantee: written price first, a defined arrival window, a clean job site, and a written guarantee on every project, with a free return visit if the work fails within the guarantee period.

Why Lodgewick ADU Builders Is Beverly Hills’s Preferred ADU Team

Beverly Hills homeowners don’t call us because they’re shopping for a generic addition. They call because they have a 1930s Spanish Colonial with a detached two-car garage that was never permitted as living space, or a hillside estate north of Sunset with a pool house that’s been there since the 1960s and was never on the city’s books as a dwelling. Our ADU Builders team has walked through enough of these projects to know what the Architectural Commission will flag, what the soils report will say before it’s ordered, and what’s hiding inside walls that haven’t been opened since the Eisenhower administration. We’re led by Russ Delmar, and he runs every Beverly Hills project the same way: inspect first, write the price, put the guarantee in writing, and never touch a wall until the homeowner has signed off on the numbers. Dispatch and scheduling are coordinated from the brand’s Los Angeles office, and crews serve Beverly Hills locally, so scheduling doesn’t drag out across the county.

We don’t expect anyone to take our word for it. Every project gets a written scope, a written price, and the 365-Day Done Right Promise in writing. If the work isn’t right, we come back and make it right. That’s the guarantee, named in the contract, not a verbal promise made over a handshake.

Backyard ADU in Beverly Hills

A Backyard ADU in Beverly Hills means building a detached accessory dwelling unit, a small house on the same lot as the main home, on the flats or in the hills. On a flat lot south of Santa Monica Boulevard, this usually means a new 500 – 900 square foot unit behind the house, replacing or supplementing an old detached garage. North of Sunset, the same project frequently involves stepping down a slope or building over clay soils that have a documented history of movement, so the foundation is engineered rather than standard. A custom detached backyard ADU in Beverly Hills generally costs $290,000 – $410,000 depending on square footage, finishes, and site conditions.

Flat-Lot Backyard Units

South of Santa Monica, the flats are lined with 1920s – 1950s homes on 7,500 – 15,000 square foot lots. A backyard ADU here sits on a standard foundation, and the main variables are utility runs, garage demolition or retention, and how the Design Review responds to the unit’s height and massing relative to the Spanish or Tudor main house.

Hillside Backyard Units

North of Sunset, a new detached ADU on a hillside estate almost always requires a geotechnical soils report and an engineered foundation. The expansive clay and historical slide activity in those hills aren’t a paperwork formality, they change the foundation design, the drainage plan, and the price. We bring the soils engineer in before we price the job, so the written quote reflects the actual site, not a guess.

ADU Construction in Beverly Hills

ADU Construction in Beverly Hills usually starts with a structure that already exists. The dominant project type is legalizing or converting pool houses, detached garages, and guest cottages on large estate lots where the building predates the permits. Converting a detached two-car garage in the flats into a habitable ADU typically runs $165,000 – $245,000 depending on condition. The hard part isn’t framing new walls; it’s discovering what’s behind the old ones. Cloth-wrapped wiring, termite-softened studs, a slab with no waterproofing, undersized headers. Those are the things that move a number.

Garage and Guest Cottage Conversions

When we open a wall in a 1920s Spanish Colonial garage, we expect the unexpected. The permit-triggered code upgrades for electrical, structural, and waterproofing are priced as allowances in the written contract before we start, and any surprise is written into a change order and signed by the homeowner before we touch it. No surprises at the door, no bill after the fact that wasn’t approved in writing.

Permit-Triggered Corrections

An ADU conversion in Beverly Hills isn’t just new drywall. The city’s building department reviews the existing structure as part of the permit, and that review triggers corrections to framing, electrical, and waterproofing that the original 1927 builder never had to think about. We handle the inspection first, write allowances into the contract, and price every correction before work proceeds.

Trusted Brands We Service in Beverly Hills

We work with established ADU manufacturers and materials suppliers including Abodu, Cover, Dvele, and James Hardie. For Beverly Hills homeowners weighing a prefab unit against a custom build, we walk through what each manufacturer offers against the site conditions on the lot, because a prefab panel that works on a flat Culver City lot doesn’t always make sense on a hillside north of Sunset with slide history. We handle the manufacturer coordination, the site prep, and the finish work, and we do it under the same written guarantee as every other project.

Common ADU Builders Problems We See in Beverly Hills Homes

• Cloth-wrapped wiring and undersized framing in 1920s – 1950s garages. The original electrical and structure were never built to code for living space. Once walls are open, the city requires upgrades, and a contractor who bid from photos will miss them.
• Treating the Beverly Hills Architectural Commission submittal like an LA City ADU review. The ARC runs its own revision cycle separate from the building permit. Contractors unfamiliar with it underbid the approval timeline and the homeowner waits months longer than quoted.
• Failed waterproofing on original slabs. The older detached garages in the flats were built as storage, not housing. We regularly find unsealed concrete that traps moisture and requires remediation before finish work can pass inspection.
• Assuming a hillside pool-house conversion north of Sunset is a flat-lot job. Skipping the geotechnical soils report and engineered foundation on expansive clay with documented slide activity produces a quote that collapses as soon as the engineer looks at the site.

Pricing for ADU Builders in Beverly Hills, CA

We Also Serve Cities Near Beverly Hills

Lodgewick ADU Builders also works across ADU Builders in Beverly Hills neighboring communities, including West Hollywood, Studio City, Culver City, and Sherman Oaks. If your project sits just outside Beverly Hills city limits, the same written pricing and 365-Day Done Right Promise apply.

FAQs About ADU Builders in Beverly Hills