Garage Conversion ADU in Beverly Hills - One Fixed Price, Permits Handled

Fast, Reliable Garage Conversion ADU Across Beverly Hills

Garage conversion ADUs in Beverly Hills typically run $185,000-$340,000 all-in, drawings through final inspection, with detached conversions on hillside lots landing at the higher end. We’re Ellery ADU Studio Westchester, and our Garage Conversion ADU team has handled permits and builds across this city’s unique municipal landscape since 2015. Dispatch and scheduling run from our Los Angeles office, but our crews serve Beverly Hills directly. We know the difference between a Pico-Robertson flat-lot Spanish Colonial garage and a Trousdale Estates hillside chauffeur quarters, and we know which one needs a geotechnical report before we draw the first plan. Call (213) 698-7591 to schedule your free estimate - written price before any work starts, per Haven Standard Clause 1.

Call (213) 698-7591

Why Ellery ADU Studio Westchester Is Beverly Hills’s Preferred Garage Conversion ADU Company

Beverly Hills is not Los Angeles. That sounds obvious, but we’ve seen too many projects stall when a contractor discovers their LA DBS permit means nothing at Beverly Hills Building & Safety. Our 900+ ADUs designed, permitted, and built since 2015 include dozens in this municipality alone. We re-qualify under Beverly Hills’s fee schedule, setback standards, and design-review requirements from day one.

Clients in South Carthay and Sentous receive the same documentation package: a written price before work starts, a permit set treated as the core product, and a documented photo record on every visit. Our 365-Day Done Right Promise is backed in writing before the project starts - if the finished ADU is not built to the permitted drawings, we make it right. A live person answers calls 24/7 at (213) 698-7591. No voicemail queue.

Nadia Ellery built this studio on the principle that the designer-builder blame gap destroys ADU projects. One contract. One written price. One phone number that reaches a human.

Our Garage Conversion ADU Services in Beverly Hills

Detached Garage Conversion

This is where Beverly Hills gets interesting. The city’s large estate-era lots are filled with original detached structures - chauffeur garages, pool houses, guest quarters from the 1920s through the 1950s - that owners are converting to luxury ADUs with finish expectations and per-square-foot costs far above surrounding markets. In the Hollywood Hills West area, we converted a detached 1940s chauffeur garage into a guest ADU with a full bath. The client chose a Dvele prefabricated shell for speed, but Beverly Hills’s design-review process and the site’s hillside geotechnical requirements added coordination rounds that a flat-lot LA job wouldn’t have. We locked the custom millwork and architectural glass package in writing before ordering, so the long-lead items set our install date rather than the framing crew. Detached conversions here typically run $220,000-$340,000.

Attached Garage Conversion

Attached conversions in Beverly Hills’s flat district - Pico-Robertson, South Carthay, the lower blocks of North Beverly Drive - often involve Spanish Colonial Revival or Tudor homes built 1920-1955. The existing garage shares a wall with the main house, so fire separation, utility routing, and foundation tie-ins require precise coordination. We see many properties where the original garage slab is 4 inches thick, within range for conversion but requiring specific insulation and moisture-barrier detailing that we document in the permit set. Attached conversions in this market typically run $185,000-$260,000.

Carport Conversion

Carport conversions are less common in Beverly Hills than in other LA-adjacent markets, but they appear on Mid-Century Modern properties in the Trousdale Estates corridor and on some 1960s flats. The challenge is always the missing envelope - you’re building walls, roof, and foundation where none existed, and hillside properties may need retaining or grading work before the structure goes up. We specify James Hardie non-combustible siding on any carport conversion in the Very High Fire Hazard Severity Zone, which covers the north Beverly Hills hillside. Carport conversions here typically run $200,000-$295,000.

Garage Partition & Bathroom Add

Some Beverly Hills owners want to keep parking but add living space. We partition existing garages - typically 400-600 square feet - into a studio or one-bedroom ADU with a full bath, kitchenette, and separate entrance. The bathroom add is the critical path item: sewer lateral capacity, venting, and water heater location must resolve in the permit set, not in the field. On a recent Sentous project, we coordinated with the city’s separate utility review to confirm adequate sewer service before finalizing the partition layout. These projects typically run $165,000-$240,000.

Garage JADU

Junior ADUs - under 500 square feet, owner-occupied, no separate kitchen required - fit neatly into many Beverly Hills garage configurations. The city’s design-review standards still apply, so even a JADU needs permitted drawings and inspection. We often see these as pool-house conversions or secondary garage spaces on estates where the main house remains owner-occupied. JADU conversions in Beverly Hills typically run $125,000-$185,000.

Trusted Brands We Coordinate in Beverly Hills

Ellery ADU Studio specifies and coordinates prefab and modular systems from Boxabl, Plant Prefab, Tuff Shed, and James Hardie within the same single contract that covers your design, permitting, and build. In Beverly Hills, we lean heavily on James Hardie non-combustible siding for hillside projects under Chapter 7A, and we coordinate Plant Prefab shells when the design-review timeline allows for factory scheduling. Every brand selection is locked in writing before ordering - no field substitutions, no change orders when the long-lead item arrives wrong. Our crews are background-checked, uniformed, and carry license documentation on every Beverly Hills site.

Common Garage Conversion ADU Problems We See in Beverly Hills Homes

• Assuming LA permits work here. Beverly Hills is a fully independent municipality with its own Building & Safety Division, its own ADU ordinance, and its own plan-check process. Contractors routinely permitted for LA ADU work must re-qualify under Beverly Hills’s distinct fee schedule, setback standards, and design-review requirements. We start every Beverly Hills project with a municipal qualification check, not an LA permit assumption.
• Ordering custom finishes before design-review sign-off. The city’s design-review board can require material changes, setback adjustments, or facade modifications after initial submission. We lock millwork, architectural glass, and specialty finishes in writing only after final design-review approval - Haven Standard Clause 5, No Surprises.
• Missing Chapter 7A ignition-resistant requirements. The north Beverly Hills hillside, including Trousdale Estates, falls within California’s Very High Fire Hazard Severity Zone. This means non-combustible siding, ember-resistant vents, and defensible-space setbacks that constrain placement and materials. We flag this in the initial site assessment, not during framing inspection.
• Ignoring graded-pad geotechnical issues. Many Trousdale Estates properties sit on artificially graded pads carved into the Santa Monica Mountains foothills in the 1950s. The compacted-fill boundary can run directly under where a detached ADU would logically be placed. Beverly Hills Building & Safety requires a geotechnical report for hillside ADUs that LA’s DBS would not have required on a comparable flat-city lot. We order soils reports before design development, not after permit rejection.

Pricing for Garage Conversion ADU in Beverly Hills, CA

We Also Serve Cities Near Beverly Hills

Our crews work throughout the metro core, including Garage Conversion ADU in Beverly Hills and surrounding communities: West Hollywood, Studio City, Culver City, and Sherman Oaks. Each municipality has its own permit landscape, and we qualify separately for every jurisdiction.

FAQs - Garage Conversion ADU in Beverly Hills