ADU in Beverly Hills, CA
Beverly Hills runs its own planning department, its own building inspectors, and its own water and sewer utility, which means an ADU here moves through a different process than one a block into Los Angeles. The city’s design-review requirement also forces ADUs to architecturally match the primary house, so a conversion or new build in Beverly Hills takes more drawing time and more permit coordination than a comparable project elsewhere. If you’re planning an ADU in Beverly Hills, call (971) 497-2402 and we’ll give you a written price before any work starts.
Why Beverly Hills Homes Are Different
Most Beverly Hills homes were built between the 1920s and 1960s in Spanish Colonial Revival, Tudor, Mediterranean, or mid-century styles on lots from 7,500 to 15,000 square feet in the flats, larger in the hills. The detached carriage houses and multi-car garages from that era are common conversion candidates, but they usually need full electrical panel upgrades, seismic retrofitting of unreinforced masonry or post-and-beam frames, and completely new plumbing rough-ins to meet current code. In the hillside neighborhoods north of Sunset, including Trousdale Estates and parcels near Benedict and Coldwater Canyons, the Wildland-Urban Interface designation adds Chapter 7A fire-resistive requirements: ember-resistant vents, Class A roofing assemblies, and dual-pane windows. That is a measurable hard cost over a comparable flats project, and it is one reason we price every Beverly Hills ADU after reviewing the specific parcel, not from a generic sheet.
The other thing that trips people up: Beverly Hills operates its own water and sewer system, entirely separate from LA DWP. Utility connection fees, capacity charges, and inspection scheduling all run through Beverly Hills Public Works. Contractors who normally pull permits in LA City often assume the same agencies and fee schedules apply, and they do not. We coordinate those connections as part of the single design-build contract.
Our Main Beverly Hills Services
The two jobs Beverly Hills homeowners ask about most are garage conversions and new detached ADUs. Both run through the city’s own design-review and building departments, and both need a permit set that will pass Beverly Hills plan check the first time.
Garage Conversion ADU in Beverly Hills
Converting a 1920s-1960s garage in Beverly Hills means working with what the original structure gives you: often unreinforced masonry, a slab that was never intended for living space, and a panel that cannot carry a modern kitchen and bath. The city requires the finished ADU to match the primary house architecturally, so the permit set drives more design work than a typical LA conversion. We pull the Beverly Hills permits, handle the seismic retrofit, and run new plumbing and electrical under one written price. Garage Conversion ADU in Beverly Hills has the full cost breakdown and process.
New Detached ADU in Beverly Hills
A new detached ADU on a Beverly Hills estate gives you a clean slate: no retrofit gymnastics, no existing-frame compromises, and a structure sized to your lot’s setbacks and Beverly Hills design-review standards. In the hills above Sunset, that also means Chapter 7A fire-resistive assemblies from the start, not as a retrofit add-on. We design the ADU, produce the architect-stamped plan set, and build it under one contract at one written price. See New Detached ADU in Beverly Hills for line-item pricing and what to expect during plan check.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
ADU Design & Permitting in Beverly Hills
ADU Design & Permitting in Beverly Hills starts with a simple truth: the city requires ADUs to architecturally match the primary structure, and its own planning and building departments review every drawing before anything gets built. Homes here run from 1920s Spanish Colonial to 1960s mid-century modern, so a permit set that passed in LA City will not automatically pass in Beverly Hills. We prepare the drawings, the zoning analysis, the Title 24 energy compliance, and the submittal package as one deliverable under our ADU Design & Permitting contract, then we build from that exact set.
Site Assessment
Signs you need it
If you are unsure whether your Beverly Hills lot can legally hold an ADU under current setback, lot-coverage, and design-review rules, you need a Site Assessment before any drawing starts.
What it costs in Beverly Hills
A Site Assessment in Beverly Hills typically runs $95-$295 as a standalone review, and it is credited back against the full design contract.
How we do it
We pull the parcel records from Beverly Hills planning, measure the existing structures, locate utility points through Beverly Hills Public Works, and give you a written summary of what fits, what needs a variance, and what it will cost before you commit.
ADU Design & Blueprints
Signs you need it
If you have a clear idea of the ADU you want and need a permit-ready plan set that will pass Beverly Hills design review, you need ADU Design & Blueprints.
What it costs in Beverly Hills
ADU Design & Blueprints in Beverly Hills typically run $8,900-$24,900 depending on size and whether the structure must match a Spanish Colonial, Tudor, Mediterranean, or mid-century primary home.
How we do it
We measure the primary residence, match its architectural language in elevation and roofline, produce the full architect-stamped plan set with Title 24 energy documentation, and schedule the Beverly Hills plan-check submittal.
Permit Application
Signs you need it
If your drawings are done but the Beverly Hills permit submittal, plan-check comments, and resubmittals are eating time you do not have, you need a Permit Application that carries through to issued permits.
What it costs in Beverly Hills
Permit Application in Beverly Hills typically runs $2,250-$5,900 on top of city filing fees, which we itemize separately so you can see exactly where the money goes.
How we do it
We prepare the full submittal package for Beverly Hills planning and building, track plan-check comments, respond with revisions, and keep the file moving until the permits are issued.
HOA & Zoning Compliance
Signs you need it
If your Beverly Hills property sits in an HOA with architectural guidelines that run parallel to the city’s own design review, you need HOA & Zoning Compliance before anyone draws a wall.
What it costs in Beverly Hills
HOA & Zoning Compliance review in Beverly Hills typically runs $750-$2,400, and it includes the written zoning analysis we submit with the permit set.
How we do it
We read the HOA’s architectural rules alongside Beverly Hills zoning, flag conflicts, and write the compliance narrative that accompanies the design-review application so the two approvals do not fight each other.
Title 24 Energy Compliance
Signs you need it
If your Beverly Hills ADU plans are near completion but lack the California Title 24 energy calculations the building department requires, you need Title 24 Energy Compliance.
What it costs in Beverly Hills
Title 24 Energy Compliance in Beverly Hills runs $1,100-$3,200 as part of the permit set, and it includes the HERS verification where required.
How we do it
We model the ADU envelope, glazing, and mechanical systems, produce the Title 24 certificate, and fold the required efficiency measures into the drawings so plan check does not bounce them back.
What ADU Design & Permitting Costs in Beverly Hills
| Item | Typical range in Beverly Hills |
|---|---|
| Site Assessment | $95-$295 |
| ADU Design & Blueprints | $8,900-$24,900 |
| Permit Application (our work, excluding city fees) | $2,250-$5,900 |
How long does ADU Design & Permitting take in Beverly Hills?
Plan set production typically takes 4 to 10 weeks depending on design-review complexity; Beverly Hills plan check adds its own timeline, which runs longer for hillside or WUI parcels. Call (971) 497-2402 for a schedule tied to your specific lot.
Will the Beverly Hills design-review require changes to my ADU plans?
It very often does, because Beverly Hills requires architectural matching with the primary structure. We write the plan set to clear design review on the first pass, and we handle any resubmittal comments as part of the same contract.
Junior ADU & Interior Conversion in Beverly Hills
Junior ADU & Interior Conversion in Beverly Hills means carving a separate dwelling out of space you already own: a basement, an above-garage room, a large bedroom wing, or an attached addition. Beverly Hills zoning allows JADUs under specific size and kitchen limitations, and the city’s design review still applies to exterior changes. We handle the conversion under our Junior ADU & Interior Conversion contract, with the permit set and construction as one written price.
Basement ADU
Signs you need it
If your Beverly Hills home has a basement with its own access or the space to create one, a Basement ADU is the fastest way to add a permitted unit without changing the home’s street face.
What it costs in Beverly Hills
A Basement ADU in Beverly Hills typically runs $165,000-$285,000 all-in, including the egress work, moisture mitigation, and utility extensions.
How we do it
We verify ceiling height and egress, seal and waterproof the shell, run new electrical and plumbing, and finish the unit with its own entrance and kitchenette under the Beverly Hills permit.
Above-Garage ADU
Signs you need it
If your Beverly Hills garage has usable attic or second-story space above the vehicle bay, an Above-Garage ADU puts that square footage to work without touching the yard.
What it costs in Beverly Hills
An Above-Garage ADU in Beverly Hills typically runs $180,000-$295,000, with the higher end reflecting seismic and fire-rating work on older garage frames.
How we do it
We assess the garage frame, add the required fire separation and structural upgrades, run new plumbing and power, and finish the space as a code-compliant unit with its own entry.
Room-to-ADU Conversion
Signs you need it
If your Beverly Hills home has a wing, a service room, or a family room that can be walled off with its own entrance and kitchenette, a Room-to-ADU Conversion is the most cost-effective path to a permitted unit.
What it costs in Beverly Hills
A Room-to-ADU Conversion in Beverly Hills typically runs $115,000-$195,000, depending on plumbing and panel capacity.
How we do it
We separate the space from the main house with proper fire and sound assemblies, add the required kitchenette and bath, and pull a separate Beverly Hills address for the unit where the city allows it.
What Junior ADU & Interior Conversion Costs in Beverly Hills
| Item | Typical range in Beverly Hills |
|---|---|
| Basement ADU | $165,000-$285,000 |
| Above-Garage ADU | $180,000-$295,000 |
| Room-to-ADU Conversion | $115,000-$195,000 |
Can a Junior ADU have a full kitchen in Beverly Hills?
No. A Junior ADU is limited to an efficiency kitchen with a small cooking appliance and no full range, per California code. We design JADUs to meet Beverly Hills plan check on the first pass. Call (971) 497-2402 for your specific layout.
Does an interior conversion need Beverly Hills architectural approval?
If the conversion changes the exterior, even with a new door, Beverly Hills design review applies. We submit the exterior elevations with the permit set so the interior work and the city’s review move on one schedule.
ADU Site Prep & Utilities in Beverly Hills
ADU Site Prep & Utilities in Beverly Hills is where the city’s independent utility system becomes a real line item. Beverly Hills runs its own water and sewer through Beverly Hills Public Works, so connection fees, capacity charges, and inspection booking go through a different agency than contractors expect. We handle the site work and the utility connections under our ADU Site Prep & Utilities contract, so the groundwork and the approvals are one written scope.
Foundation & Grading
Signs you need it
If your Beverly Hills ADU site sits on uneven grade, old fill, or a hillside pad that needs cut-and-fill or retaining, you need Foundation & Grading before framing starts.
What it costs in Beverly Hills
Foundation & Grading in Beverly Hills typically runs $22,000-$75,000, with hillside parcels above Sunset toward the upper end.
How we do it
We run the soils report, set the excavation plan with the Beverly Hills grading permit where needed, pour the foundation with the seismic hold-downs, and get the city’s compaction and form inspections signed off.
Electrical Panel Upgrade
Signs you need it
If your Beverly Hills home still runs a 60-amp or 100-amp panel from the 1920s-1960s era, an Electrical Panel Upgrade is required before the ADU gets its own meter or feeder.
What it costs in Beverly Hills
An Electrical Panel Upgrade in Beverly Hills typically runs $4,800-$12,500 depending on panel size and whether the service entrance must move.
How we do it
We size the new panel from the ADU’s Title 24 load calculation, upgrade the service, add the ADU feeder, and coordinate the Beverly Hills electrical inspection as part of the same permit file.
Plumbing Lateral
Signs you need it
If your Beverly Hills ADU needs its own water and sewer connection to the city mains, you need a Plumbing Lateral from the property line to the new unit.
What it costs in Beverly Hills
A Plumbing Lateral in Beverly Hills typically runs $8,000-$25,000, with the wide range driven by the distance to the main and the city’s capacity charges.
How we do it
We coordinate the tap and inspection with Beverly Hills Public Works, trench the lateral, install the water and sewer lines, and restore the paving or landscaping to a clean finished grade.
Landscaping & Hardscape
Signs you need it
If your Beverly Hills ADU needs walkways, a patio, privacy planting, or fence work to meet design-review conditions, you need Landscaping & Hardscape as part of the finish scope.
What it costs in Beverly Hills
Landscaping & Hardscape in Beverly Hills typically runs $7,500-$30,000, and the design-review landscape plan is included in the permit set.
How we do it
We build the hardscape first, set the planting beds, run the irrigation, and leave the finished site ready for the final Beverly Hills landscape inspection.
What ADU Site Prep & Utilities Costs in Beverly Hills
| Item | Typical range in Beverly Hills |
|---|---|
| Foundation & Grading | $22,000-$75,000 |
| Electrical Panel Upgrade | $4,800-$12,500 |
| Plumbing Lateral | $8,000-$25,000 |
Why are Beverly Hills utility connections so expensive?
Beverly Hills runs its own water and sewer system through Beverly Hills Public Works, separate from LA DWP, and the city’s capacity charges and inspection fees are higher than neighboring LA City parcels. We itemize those fees in the written quote. Call (971) 497-2402 for your line items.
Does the hillside fire zone change what site prep costs?
Yes. Parcels north of Sunset in the Wildland-Urban Interface zone require Chapter 7A assemblies and ember-resistant details that add hard cost to the foundation, roof, and venting lines. We price those requirements from the start, never as a change order.
Brands We Service in Beverly Hills
We specify and coordinate prefab and modular systems from Cover, Dvele, and Mighty Buildings within a single design-build contract. Factory components are ordered after the Beverly Hills permit set is approved, so nothing arrives before the city says the drawings are right. See our brands for what we coordinate and where each system performs best.
Pricing for ADU in Beverly Hills, CA
| Service | Typical range in Beverly Hills |
|---|---|
| Site Assessment | $95-$295 |
| ADU Design & Blueprints | $8,900-$24,900 |
| Permit Application (our work) | $2,250-$5,900 |
| HOA & Zoning Compliance | $750-$2,400 |
| Title 24 Energy Compliance | $1,100-$3,200 |
| Basement ADU | $165,000-$285,000 |
| Above-Garage ADU | $180,000-$295,000 |
| Room-to-ADU Conversion | $115,000-$195,000 |
| Foundation & Grading | $22,000-$75,000 |
| Electrical Panel Upgrade | $4,800-$12,500 |
| Plumbing Lateral | $8,000-$25,000 |
What pushes a Beverly Hills price upward: hillside parcels in the Wildland-Urban Interface zone requiring Chapter 7A fire assemblies, architectural matching that adds custom millwork and period-correct details, and Beverly Hills Public Works capacity charges we cannot wave away. Every price above is a written figure in the contract, per The Haven Standard Clause 1, and it does not change once work starts unless you change the scope.
Neighborhoods We Serve in Beverly Hills
We serve ADU projects across Beverly Hills, from the flats south of Wilshire up through the hills north of Sunset. The terrain changes the work: flats parcels run on standard foundations, while hillside lots in the WUI add fire-resistive scope and grading complexity.
- Beverly Hills Flats
- Trousdale Estates
- The Benedict and Coldwater Canyon-adjacent hills
- Beverlywood-adjacent parcels
- Areas near Greystone and Doheny
Scheduling typically runs 1 to 3 weeks out for an initial site visit across these neighborhoods, and we confirm the date in writing when you call (971) 497-2402.
Service Area - Cities Near Beverly Hills
Beverly Hills sits at the center of our Westside service area, and we run projects into the neighboring cities regularly. We serve West Hollywood, CA to the east, Studio City, CA over the hill, Universal City, CA to the northeast, and Culver City, CA to the south. Each city runs its own permit process, so we price and schedule those jobs against the right planning department every time.
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 About ADU in Beverly Hills
California law requires Beverly Hills to permit at least one ADU on single-family lots, but the city still applies its own setbacks, lot-coverage limits, and design-review rules. A lot that cannot meet those standards may qualify for a JADU or an interior conversion instead. Call (971) 497-2402 for a written site evaluation.
You deal with two Beverly Hills departments: planning runs design review and zoning, and building runs plan check and inspections. Utility connections run through Beverly Hills Public Works. We coordinate all three as part of the single design-build contract, so you are not chasing three counters yourself.
We build it. The drawings, the permit set, and the construction are one contract at one written price under The Haven Standard, so there is no handoff between a designer and a builder when something needs attention. Call (971) 497-2402 for a free second opinion on any written estimate you already have.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Beverly Hills Customers Say
"Handled the whole planning process. We went to one hearing and that was it."
- Rowena C."Garage conversion finished on the drawings and close to the schedule. They were honest that the sewer connection was the unknown, and it was."
- Arjun D."The permit set and the build were one contract with one number. Our neighbours used two firms and spent a year watching them blame each other."
- Helena V.