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
ADU construction in Beverly Hills runs $250,000 to $450,000 for a detached unit, with attached conversions starting around $150,000. The wide spread comes down to soil conditions, hillside engineering, and the city’s famously exacting design review process. Benson ADU Builders handles the full build, from the first zoning check through final inspection, with a written price before any work starts. Call (903) 568-7222 to get your specific number.
Why Beverly Hills Homes Are Different
Beverly Hills is not one housing market. South of Wilshire, you’ll find original 1920s Spanish and Tudor homes on flat lots with mature trees. North of Sunset, the streets climb into the hills, where retaining walls, caisson foundations, and slope analysis become part of the ADU conversation before we ever talk floor plans. The Trousdale Estates area sits on engineered pads with strict hillside ordinances, and a project there often requires a soils report plus a geotechnical engineer’s sign-off, which adds two to four weeks to the front end. The flats around Beverlywood and the streets near Roxbury Park have their own rhythm: older sewer lines, rear yard easements, and neighbors close enough that we coordinate delivery times and crane placement well in advance.
The climate does real work on building materials here. Intense summer sun fades and warps cheap siding within a few seasons, which is why we lean on James Hardie cladding for Beverly Hills projects. The marine layer burns off by mid-morning most of the year, so our crews get consistent building weather, but hillside sites can stay damp in shaded canyons long after the flats have dried out. Those microclimates affect everything from framing schedule to which prefab panel system makes the most sense. We plan for it.
Our Main Beverly Hills Services
Three jobs dominate the calls we get from Beverly Hills homeowners: a detached ADU in the back yard, a full home addition, or a single room addition. Each has its own Beverly Hills page with pricing, timelines, and the specifics that apply here, so pick the one that matches your project.
ADU Builders in Beverly Hills
A Beverly Hills ADU usually falls into one of two buckets: a site-built unit designed to match the main house, or a prefab unit from a brand like Abodu, Cover, or Dvele that we permit, site, and finish. Setbacks, which are the required distances between a structure and the property line, get tight on the flat lots south of Wilshire, and the hillside ordinance zones add their own constraints. We handle the full permit path, the foundation, and the finish work. ADU Builders in Beverly Hills covers the entire process, including what a typical project costs here.
Home Addition Contractor in Beverly Hills
Adding square footage to a Beverly Hills house means tying into a structure that’s often 70 to 100 years old. The framing, roofline, and foundation all have to merge cleanly with what’s already there, and on hillside lots, that merger usually involves some structural retrofit. We’ve built additions where the existing foundation had to be reinforced before any new walls went up, and our written price covers that discovery path before the first shovel turns. Home Addition Contractor in Beverly Hills has the full breakdown.
Room Addition Contractor in Beverly Hills
A room addition is the most common permit we pull in Beverly Hills. It’s a single space – a primary suite, a home office, a den – but it still has to meet the same hillside, setback, and design review standards as a full addition. We size the project, match the roof line, and tie the HVAC and electrical into the existing panel. For pricing and timing on a Beverly Hills room addition, see Room Addition Contractor in Beverly Hills.
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 prefab systems from our brands including Cover, Dvele, and Boxabl, and we source James Hardie cladding for sun-exposed Beverly Hills exteriors. Most materials are staged at our Los Angeles yard, so Beverly Hills projects don’t wait on long-haul delivery once permits clear.
Pricing for ADU Company in Beverly Hills, CA
| Service | Typical range in Beverly Hills |
|---|---|
| Detached ADU (site-built) | $250,000 – $450,000 |
| Detached ADU (prefab, including site work) | $200,000 – $350,000 |
| Attached ADU conversion (garage) | $150,000 – $250,000 |
| JADU conversion | $120,000 – $200,000 |
| Full home addition (400 – 800 sq ft) | $180,000 – $400,000 |
| Room addition (200 – 400 sq ft) | $90,000 – $200,000 |
| Primary suite addition | $150,000 – $300,000 |
| Site preparation and foundation work | $25,000 – $80,000 |
Hillside engineering, caisson foundations, and design review revisions push Beverly Hills pricing toward the upper end of these ranges. Every Benson ADU Builders quote is a written, line-item price before work begins, so the number you approve is the number you pay.
Neighborhoods We Serve in Beverly Hills
We run crews throughout Beverly Hills and can usually start site visits within a few days of your call. The areas we work in most often:
- The Flats, south of Wilshire
- Trousdale Estates
- Beverlywood and the streets around Roxbury Park
- The hillside streets north of Sunset
Service Area – Cities Near Beverly Hills
Our Beverly Hills crews also cover the surrounding west side and valley cities. If you’re next door in West Hollywood, CA, across the hill in Studio City, CA, down in Culver City, CA, or over in Sherman Oaks, CA, the same written-price process applies.
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
Site visits can usually be scheduled within a few days. The bigger timeline element is the city’s permitting and design review process, which varies by project type and hillside status. Your written quote includes a projected schedule, and our 365-Day Done Right Promise means the work is guaranteed for a full year after completion. Call (903) 568-7222 to get your project on the calendar.
Some Beverly Hills neighborhoods have HOAs with architectural review requirements that run parallel to city permits. We pull the city permit and submit whatever the HOA requires, coordinating both tracks so one doesn’t stall the other. The HOA review is a paperwork step, not a reason to delay your estimate. Call (903) 568-7222 for a free consultation and we’ll map it out.
No. Benson ADU Builders puts a written price in front of you before any work begins, and that price is what you pay. If unforeseen site conditions force a change, we document it, show you the line item, and get your approval before proceeding. No scope creep, no end-of-job surprise invoice. Call (903) 568-7222 to schedule your free estimate.
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
"Booked a consult online and met the project manager two days later. Weekly progress updates arrived by text with photos. ADU finished on schedule."
- Hannah W."Clean, quiet crew. They respected the neighbors, kept noise to working hours, and swept the driveway every evening."
- Hope C."Communication was the best part. I always knew what was happening that week without having to ask."
- Dolly N.
