Fast, Reliable Garage Conversion ADU Across Beverly Hills
A garage conversion ADU in Beverly Hills typically runs $165,000-$285,000 all-in, from measured drawings through final inspection, and the timeline stretches 8-14 months depending on whether your property sits on the flats or in the hills. We’re Ellery ADU Studio Los Angeles, and our Garage Conversion ADU team serves Beverly Hills from our metro office with crews who know the difference between LADBS assumptions and what actually happens at Beverly Hills Building & Safety on Santa Monica Blvd. Call (424) 551-7706 to schedule your free estimate - every project receives a written price before any work starts, per Haven Standard Clause 1.
Why Ellery ADU Studio Los Angeles Is Beverly Hills’s Preferred Garage Conversion ADU Company
We’ve designed, permitted, and built over 900 ADUs since 2015, and a growing share of them are garage conversions in the 90210 zip code and adjacent Beverly Hills parcels. Our clients here tend to be homeowners who bought Spanish Colonial Revival or mid-century properties between 2015 and 2022 and are now converting detached garages into rental income or family housing - they research deeply before calling, and they choose us because we name dollar ranges on the page and back every promise with a Haven Standard clause.
Our crews reach Beverly Hills properties from the metro office without the scheduling delays that plague contractors routing from Ventura County or the Inland Empire. That matters when you’re coordinating geotechnical drilling on a Benedict Canyon slope or meeting a Beverly Hills Building & Safety inspector for a foundation check on a tight window.
What separates us from contractors who “also serve Beverly Hills” is that we do not assume LA City rules apply. We have walked permits through City Hall on Santa Monica Blvd enough times to know that setback interpretations, design-compatibility review, and even the permit technician’s preferred plan-check format differ materially from LADBS. Our clients receive a documented photo record on every visit - evidence of what we found, not a summary of how it felt.
Under the 365-Day Done Right Promise, if the finished ADU is not built to the permitted drawings, we make it right - in writing, before your project starts. A live person answers our phones 24/7, and we offer a Free Second Opinion on any written estimate already in your hand.
Our Garage Conversion ADU Services in Beverly Hills
Detached Garage Conversion
Detached garages on the south-of-Sunset flats - particularly in the Spanish Colonial Revival and Tudor estates of the 1920s-1950s - are often the most straightforward ADU candidates in Beverly Hills, but they carry hidden conditions. Many were built with cloth-wrapped wiring, 2×4 rafter spans notched for prior owners’ shop lights, and slabs that were never moisture-sealed. We inspect before we quote, write allowances into the contract for likely open-up surprises, and price any additional scope in writing before our crews touch another board. A typical detached garage conversion in Beverly Hills runs $175,000-$285,000 all-in.
Attached Garage Conversion
Attached garages in Beverly Hills flats properties often share a wall with the main house, which triggers stricter fire-separation and sound-transmission requirements under Beverly Hills Municipal Code. The conversion must maintain a one-hour fire-rated assembly between ADU and primary residence, and any opening of that shared wall reveals conditions that weren’t visible in the permit set. We model these costs upfront rather than discovering them mid-project.
Garage Partition & Bathroom Add
Some Beverly Hills homeowners want to split an oversized detached garage - keeping one bay for storage or a workshop while converting the other to a studio with a bathroom add. This is common on the larger R-1 lots near Roxbury Park or along Carmelita Avenue. The partition itself is simple; the complexity lies in whether the existing slab and sewer lateral can support a new bathroom without a pump system, and whether Beverly Hills Building & Safety will count the square footage as a single ADU or require separate metering. We resolve these questions in the permit set before construction begins.
Garage JADU
A Junior ADU - a garage conversion under 500 square feet, owner-occupied, with no separate utility meter - can be permitted in Beverly Hills under state law, but the city’s conservative posture means JADU applications receive the same design-compatibility scrutiny as full ADUs. We’ve successfully permitted garage JADUs in the flats where the existing structure was sound and the owner-occupancy covenant was clearly documented. Typical range: $165,000-$220,000.
Carport Conversion
Carport conversions in Beverly Hills are less common than garage conversions, but they appear on some mid-century modern hillside properties where the original architect favored open parking. The challenge is that a carport has no enclosed structure to convert - you’re building walls, roof, and foundation from scratch while the Beverly Hills Municipal Code treats the result as new construction for setback and height purposes. We evaluate whether a carport conversion pencils out against a new detached ADU on the same lot.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Beverly Hills
Ellery ADU Studio specifies and coordinates prefab and modular systems from Abodu, Cover, and Mighty Buildings within our single-contract design-build model. For Beverly Hills hillside properties where Chapter 7A fire-resistive standards apply, we often pair ignition-resistant cladding systems with James Hardie fiber-cement siding to meet the Very High Fire Hazard Severity Zone requirements that trigger on Benedict Canyon, Coldwater Canyon, and Trousdale-adjacent parcels. Every system is priced in writing before work starts, and every installation is documented with a photo record on each visit.
Common Garage Conversion ADU Problems We See in Beverly Hills Homes
- Permits pulled against LADBS assumptions. Contractors familiar with LA City’s fast-track ADU review assume the same pathways exist at Beverly Hills Building & Safety. They don’t. Plan check stalls, setbacks are read more conservatively, and the owner-builder exemption shortcuts don’t transfer across the 90210 boundary.
- Pre-1950 wiring and framing in flats garages. We regularly find cloth or early rubber insulation, notched rafters from prior owner modifications, and unpermitted electrical or plumbing that must be corrected and re-permitted before the ADU permit will issue.
- Chapter 7A fire-resistive triggers on hillside lots. Properties north of Sunset in Very High Fire Hazard Severity Zones require ignition-resistant siding, ember-resistant venting, and tempered glazing - adding $15,000-$35,000 to a conversion that would be simpler on the flats.
- Unpermitted prior garage conversions. A 1940s garage that a prior owner partially finished as a “bonus room” without permits must be returned to code-compliant garage status before it can be legally converted to an ADU. We handle the correction and re-permitting as part of the scope.
Pricing for Garage Conversion ADU in Beverly Hills, CA
Garage conversion ADUs in Beverly Hills typically run $165,000-$285,000 all-in, drawings through final inspection. Attached garage conversions on the flats start near the lower end; detached hillside conversions with Chapter 7A requirements and geotechnical review push toward the upper range. A garage partition with bathroom add runs $155,000-$210,000. A garage JADU, where the structure and owner-occupancy conditions align, typically falls at $165,000-$220,000.
What moves the number: fire-resistive cladding on hillside parcels, foundation work if the slab is insufficient, sewer lateral extension for bathroom adds, and the extent of unpermitted prior work that must be corrected. We do not absorb surprises silently. Under Haven Standard Clause 5 (No Surprises), the scope is locked at signing; any open-up condition beyond our written allowances is priced and approved in writing before we proceed. Every client receives a written price before any work starts - always, per Clause 1. Call (424) 551-7706 for your free estimate.
We Also Serve Cities Near Beverly Hills
Our crews work throughout the metro area, and we regularly handle Garage Conversion ADU in Beverly Hills alongside projects in West Hollywood, Studio City, Culver City, and Sherman Oaks. Each city carries its own permitting authority and code interpretations; we do not assume what works in one jurisdiction transfers to the next.
Serving Beverly Hills, CA - Our Local Coverage Area
We’re based in the Beverly Hills area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Garage Conversion ADU in Beverly Hills
No. Beverly Hills Building & Safety is a fully independent permitting authority, and the fast-track ADU review, owner-builder exemptions, and expedited pathways that contractors use in LA City do not apply here. Every garage conversion resets to Beverly Hills Municipal Code review at City Hall on Santa Monica Blvd, with its own plan checkers, permit technicians, and inspection scheduling timelines. Call (424) 551-7706 for a free estimate - we’ll walk you through what the local process actually looks like for your property.
Yes, but the unpermitted work must be corrected and brought to code compliance before Beverly Hills Building & Safety will issue a new ADU permit. We regularly encounter this on flats properties - prior owners finished garages as “bonus rooms” without permits, added wiring, or modified framing. We handle the correction and re-permitting as a scoped line item, priced in writing before work begins. Call (424) 551-7706 for a free estimate and we’ll assess what’s currently on file with the City.
Hillside and canyon parcels - Benedict Canyon, Coldwater Canyon, Trousdale-adjacent - fall within Very High Fire Hazard Severity Zones, which triggers Chapter 7A fire-resistive standards: ignition-resistant siding, ember-resistant venting, tempered glazing. Decomposed-granite soils and legacy cut-and-fill grading also require geotechnical review for foundation work. These add $15,000-$35,000 and several weeks to a conversion that would be simpler on a flat lot south of Sunset. Call (424) 551-7706 and we’ll flag which triggers apply to your specific parcel.
We write allowances into every contract for conditions we cannot see until walls are open - outdated wiring, notched framing, failed waterproofing. If we find something beyond those allowances, we stop, price it as a written change order, and get your approval before proceeding. Under Haven Standard Clause 5 (No Surprises), no work continues on new scope without a written, approved price. The field vignette: we were converting a 1948 detached garage off Walden Drive when the open-up revealed cloth-wrapped wiring, a notched 2×4 rafter, and an unsealed slab. We stopped, priced the rewire, sistered framing, and slab sealer as written change orders, and got approval before touching another board. The finished conversion passed Beverly Hills inspection with Schedule 40 conduit and James Hardie-clad exterior. Call (424) 551-7706 for a free estimate.
Yes, if the structure is 500 square feet or less, the property is owner-occupied, and the JADU shares utilities with the primary residence. Beverly Hills applies the same design-compatibility scrutiny to JADUs as to full ADUs, so the permit set must be complete and the owner-occupancy covenant clearly documented. We’ve successfully permitted garage JADUs in the flats where these conditions align. Typical range: $165,000-$220,000. Call (424) 551-7706 to see whether your property qualifies.
Ready to convert your Beverly Hills garage into permitted ADU square footage? Call (424) 551-7706 to schedule your free estimate. You’ll receive a written price before any work starts, a documented photo record on every visit, and the 365-Day Done Right Promise - all backed in writing under The Haven Standard.
Written by Nadia Ellery, Owner at Ellery ADU Studio Los Angeles, serving Beverly Hills since 2015.