ADU Company in Beverly Hills, CA
ADU projects in Beverly Hills run through the city’s own Building & Safety department, not LA City’s LADBS, with separate water meter applications through Beverly Hills Public Works. Most jobs here involve legalizing long-unpermitted servants’ quarters and chauffeur-over-garage units in 1920s – 1950s estate homes, not ground-up construction on blank lots. We’re familiar with the city’s plan-check staff, fee schedule, and inspection cadence because we route permits through Beverly Hills regularly. Call (707) 383-5338 to talk through your property and receive a written price before any work starts.
Why Beverly Hills Homes Are Different
The Beverly Hills Flats hold a housing stock found almost nowhere else in Southern California: Spanish Colonial Revival, Mediterranean, and Tudor Revival homes built from the 1920s through the 1950s, most with detached two-car garages that include accessory rooms or full living units above. These were originally servants’ or chauffeur’s quarters, and many have been occupied informally for decades with electrical and plumbing added piecemeal across generations. California’s state ADU preemption laws have made legalizing these structures the dominant project type here, but the work requires careful documentation of what’s existing versus new.
North of Sunset Boulevard, the terrain changes completely. Estate properties sit on steep, geologically complex lots where ADU construction needs site-specific grading plans, retaining walls, and extended utility runs. The residential hills also fall within a Very High Fire Hazard Severity Zone, so any new ADU there requires Class A roofing assemblies, ember-resistant vents, and ignition-resistant exterior cladding. Winter storm drainage on these hillside parcels can expose inadequate grading during permit review, adding a step that flat-land projects don’t face. Contractors who treat Beverly Hills as generic LA miss these distinctions and eat delays.
Our Main Beverly Hills Services
Most Beverly Hills homeowners who call us start with one of these three project types, each shaped by the city’s unique housing stock and permit environment.
Home Addition Contractor in Beverly Hills
Home additions in Beverly Hills often tie into the main house’s existing systems rather than standing alone, which means we map your electrical panel capacity, sewer lateral condition, and HVAC load before drawing plans. In the Flats, we regularly see 100-amp panels that need upgrading to 200-amp service to handle a new master suite or expanded kitchen. Hillside additions trigger the same fire-hardening requirements as detached ADUs. We pull Beverly Hills permits and coordinate inspections on your behalf. Home Addition Contractor in Beverly Hills
Garage Conversion Contractor in Beverly Hills
Garage conversions are the most common ADU-adjacent project we handle in Beverly Hills because so many garages already contain finished rooms built decades ago. The work typically involves bringing existing electrical, plumbing, and structural framing up to current code, not starting from scratch. We navigate Beverly Hills Building & Safety’s specific requirements for egress windows, ceiling height, and separate utility metering. Our crew documents every existing condition with photos before touching anything. Garage Conversion Contractor in Beverly Hills
ADU Builders in Beverly Hills
Our ADU work in Beverly Hills splits between legalizing existing unpermitted units and building new detached structures on large lots in the Flats or hillside estates. New ADUs north of Sunset face the VHFHSZ requirements and often need extensive grading. Legalizations require us to work with what’s there, which means creative solutions for headroom, foundation anchoring, and utility separation. We coordinate both Building & Safety and Public Works approvals since Beverly Hills runs its own water system. ADU Builders 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 work with prefab and modular ADU brands including Cover, Dvele, Mighty Buildings, and Boxabl, matching the product to your lot conditions and design goals. Our Los Angeles office stocks common connection kits and hardware for faster field installation. See our brands for full specifications and lead times.
Pricing for ADU Company in Beverly Hills, CA
| Service | Typical range in Beverly Hills |
|---|---|
| Garage conversion ADU (basic legalization) | $85,000 – $140,000 |
| Garage conversion ADU (full gut + systems upgrade) | $140,000 – $220,000 |
| New detached ADU, flat lot (studio/1BR) | $220,000 – $350,000 |
| New detached ADU, flat lot (2BR) | $320,000 – $480,000 |
| Hillside ADU with grading/retaining walls | $380,000 – $650,000 |
| Home addition, single room (permit-ready) | $180,000 – $300,000 |
| Home addition, multi-room with systems upgrade | $300,000 – $500,000 |
| Electrical service upgrade (200-amp panel) | $8,500 – $15,000 |
| Sewer lateral replacement | $12,000 – $28,000 |
| Fire-hardening package (VHFHSZ compliance) | $15,000 – $35,000 |
| Design and permit expediting | $8,000 – $18,000 |
Prices run higher in Beverly Hills than most LA-area cities for three reasons: the independent permit system requires dedicated staff time, hillside fire-hardening adds material cost, and older homes almost always need electrical or sewer work that newer construction doesn’t. Every family receives a written, line-item price before any work begins. That price doesn’t change unless you change the scope.
Neighborhoods We Serve in Beverly Hills
We work across Beverly Hills from the Flats to the hillside estates. Our crews are dispatched from the Los Angeles office and typically arrive within 30 – 45 minutes of scheduled appointments anywhere in the city.
- The Flats (south of Santa Monica Boulevard)
- Trousdale Estates
- Beverly Hills Post Office area
- Beverly Crest (north of Sunset)
- Golden Triangle
Service Area – Cities Near Beverly Hills
We regularly coordinate projects for homeowners in neighboring communities whose lots or budgets point them toward Beverly Hills-area contractors. Our service area includes West Hollywood, CA, Studio City, CA, Culver City, CA, and Sherman Oaks, CA. Permit requirements and utility systems vary by city, so we maintain separate workflow documentation for each jurisdiction.
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
Plan check typically runs 8 – 12 weeks through Beverly Hills Building & Safety, with another 2 – 4 weeks for water meter approval through Public Works. Contractors unfamiliar with the independent city system often add 3 – 6 weeks with incomplete submissions. Call (707) 383-5338 and we’ll review your timeline before you commit.
California state law preempts HOA bans on ADUs, but HOAs can still enforce design guidelines, setback rules, and parking requirements that affect your project’s feasibility. We review your CC&Rs during our first site visit and flag any conflicts before design begins. Call (707) 383-5338 for a free estimate that accounts for your specific restrictions.
Yes. We schedule noisy work outside school hours when families request it, use shoe covers and drop cloths on every visit, and send a photo of the clean-up before the crew leaves. The Cedarwell Care Promise applies to every Beverly Hills job: pet-safe products where there’s a choice, quiet tools near bedrooms when possible, and a live person answering calls 24/7 throughout your build.
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
"Garage conversion into a studio. They sealed off the work area so dust didn't get into the house, and cleaned up every day before leaving. Calm, careful team to have around."
- Darnell Hobbs"Added a backyard cottage. The team protected our existing landscaping and left the yard clean every evening. Gentle, respectful, and they walked us through each stage calmly."
- Tamara Welsh"Garage to studio conversion with us living right there. They sealed off the dust, cleaned up daily, and respected our quiet hours. No surprise costs. Beautiful."
- Terrence Boylan