A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Beverly Hills, CA
Adding an ADU, converting a garage, or building a room addition in Beverly Hills is different from anywhere else in Los Angeles County. The housing stock is older and more expensive, the city’s design review process is exacting, and the lots often hold mature landscaping and architectural details you do not want to disturb. Your ADU has to look like it belongs on a Beverly Hills estate, not like a box dropped in the backyard. We are an independently owned member of the Garrison Partners family, and we have learned what this city’s permit desk and design standards actually demand. That knowledge goes into every written price we hand a homeowner before work starts. Call us at (213) 732-1415 if you want a straight answer about your property.
Why Beverly Hills Homes Are Different
Beverly Hills is a city of large single-family estates, many built between the 1920s and the 1970s. Spanish Colonial Revival, Mediterranean, and mid-century modern are the dominant styles, and in the historic flats and hillside zones, those styles are protected. The city’s design review process means an ADU or room addition is judged on how well it complements the original house and the surrounding neighborhood. That is not a suggestion here; it is a condition of your permit.
Two other realities shape Beverly Hills work. First, the climate. Mild and dry most of the year, which means crews can work through almost any season. But a backyard unit needs real ventilation and shading so it does not bake in August without running the air conditioning all day. Winter rains arrive fast and hard, so drainage and site grading matter more than they do in flatter, drier parts of the county. Second, the lots. Garages in the flats are often detached and set behind the house, and because alleys are rare in Beverly Hills, any conversion or addition has to respect mature landscaping and keep sightlines private from neighboring two-story estates. A contractor learns that the first time a city arborist shows up on site. We plan for it before the first nail is driven.
Our Main Beverly Hills Services
Three jobs make up nearly all of the ADU and additional-space work we do in Beverly Hills. Each has its own dedicated page on this site, with pricing, timelines, and the permit realities specific to this city.
Room Addition Contractor in Beverly Hills
A room addition in Beverly Hills means matching existing finishes and rooflines on a house that may be 60 or 80 years old. Older foundations often need structural review before the new square footage goes on, and the city wants to see that the addition does not change the character of the original elevation. We price the structural work, the finishes, and the design review in writing before you approve anything. Learn more on the Room Addition Contractor in Beverly Hills page.
Garage Conversion Contractor in Beverly Hills
Most Beverly Hills garages are detached, set behind the home, and surrounded by mature planting. Converting one is the fastest path to extra living space in this city, but the work is not a simple drywall job. You are bringing an old structure up to current code for insulation, electrical, and moisture control, and the city will inspect every stage. We handle the structural and permit work so the finished unit is legal, comfortable, and matched to your main house. Details are on the Garage Conversion Contractor in Beverly Hills page.
ADU Builders in Beverly Hills
A backyard ADU on a Beverly Hills lot has to clear the city’s design review, protect the privacy of neighboring estates, and meet luxury expectations for finishes. We build conventional stick-frame units and also work directly with prefab platforms like Cover and Dvele, which can shorten the on-site timeline considerably when the lot and the city’s setback rules allow it. Every ADU gets a written price before work begins and a one-year written guarantee after it ends. See the full breakdown on the ADU Builders in Beverly Hills page.
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.
Brands We Service in Beverly Hills
We build with conventional materials such as James Hardie siding, and we are fluent with the leading prefab and modular ADU platforms, including Cover, Dvele, and Mighty Buildings. Matching the right system to your lot and the city’s design review is part of the planning work we do before pricing. For more on what we install and service, see our brands.
Pricing for ADU Company in Beverly Hills, CA
| Service | Typical range in Beverly Hills |
|---|---|
| Detached 1-bedroom ADU (prefab) | $180,000 – $260,000 |
| Detached 1-bedroom ADU (conventional build) | $250,000 – $350,000 |
| Detached 2-bedroom ADU (prefab) | $260,000 – $360,000 |
| Detached 2-bedroom ADU (conventional build) | $350,000 – $475,000 |
| Standard garage conversion to studio | $95,000 – $135,000 |
| Standard garage conversion to 1-bedroom | $120,000 – $165,000 |
| Primary suite addition (300 – 400 sq ft) | $175,000 – $250,000 |
| Family room or great room addition (400 – 600 sq ft) | $200,000 – $300,000 |
| Permit fees and design review (Beverly Hills) | $10,000 – $25,000 |
Beverly Hills costs run higher than the county average for two reasons. Design review and historic-preservation requirements add planning time and architectural detail, and the expectations for finishes on a property of this value are simply higher. Those are not hidden costs; they belong in the written price. The Garrison Standard means every estimate you get from us is a fixed, line-item price, and the number you approve is the number on the final invoice.
Neighborhoods We Serve in Beverly Hills
We work throughout Beverly Hills, from the historic flats north of Santa Monica Boulevard to the hillside lots climbing into the canyons. Our scheduling for estimates across the city is typically within a few business days, and we keep the phone answered by a live person around the clock.
- The Flats
- Trousdale Estates
- Beverly Hills Gateway
- Beverlywood (Beverly Hills adjacent)
- Coldwater Canyon area
Service Area – Cities Near Beverly Hills
Our crews serve Beverly Hills directly, and we take the same written-price and written-guarantee approach into the neighboring communities. If you are just over the city line, you can reach us the same way. We also serve West Hollywood, CA, Culver City, CA, Los Angeles, CA, and Huntington Park, CA.
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 Company in Beverly Hills
We schedule estimates across Beverly Hills within a few business days in most cases. When you call (213) 732-1415, a live person answers and can tell you the next available window. The estimate itself includes a written, line-item price before any work is approved.
Yes. Beverly Hills design review adds time to nearly every ADU, garage conversion, or addition, especially in the historic flats and hillside zones. Planning for that review is part of our process, and we include the permit and design-review fees in the written price so the timeline and the cost are clear from the start.
It applies everywhere we build, including Beverly Hills. The Garrison Standard covers workmanship defects for 365 days after completion. If something fails inside that year, we return and correct it at no charge. The guarantee is on paper, with the coverage and the process spelled out.
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
"Insulation, drywall, and finishes were all well done. Feels like part of the house."
- Pete O."Room addition over the back patio. Framing is square, windows are tight, and the roofline matches."
- Danny L."Foundation and slab poured on schedule. Crew kept the yard orderly."
- Marian J.
