A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Home Addition Contractor Across Beverly Hills
A home addition in Beverly Hills is a serious construction project, not a weekend job. Whether you’re adding a second story off North Rexford Drive or a garage conversion near the flats north of Santa Monica Boulevard, the city runs its own plan-check and inspection process. That means your contractor needs to know Beverly Hills code, not just LA County assumptions. We do. We’re Home Addition Contractor specialists serving Beverly Hills with written pricing before work starts, a 365-Day Done Right Promise, and a crew whose name and photo you get before they arrive. Call (472) 248-8213 to schedule your free estimate.
Why Sutton ADU Builders Is Beverly Hills’s Preferred Home Addition Contractor Company
Beverly Hills homeowners ask us for something simple: a builder who shows up on time, tells them the truth about cost, and proves who’s walking through the door. We’ve earned a strong local reputation by doing exactly that. Our crews work throughout the 90210, 90211, and 90212 zip codes, from the flats to the hillside lots where geotechnical review becomes part of the permit set. Miles Hartwell, our founder, set the standard in 2006 when he started Sutton ADU Builders under the Threshold Group family: every technician background-checked, identity-verified, uniformed, and photo-badged. Your name and photo come to you by text or email before the visit. No exceptions.
That matters when you’ll be home alone during the walkthrough, or when your kids are doing homework while a contractor measures the back wall. The Threshold Standard isn’t a slogan. It’s a system: written price first, 365-Day Done Right Promise on workmanship, and a free second visit if any element fails. Beverly Hills clients choose us because we treat their property like a place people live, not a job site.
Second Story Addition Contractor in Beverly Hills
A Second Story Addition Contractor in Beverly Hills handles the structural, permit, and design work that turns a single-story home into two. This is common on the 1950s ranch houses that line the streets south of Sunset, where owners want a primary suite upstairs but don’t want to move. In Beverly Hills, most second-story additions run $220,000 – $380,000 before interior finishes, and the structural scope often drives the cost higher when the original footing can’t carry the new load.
Load Bearing and Shear Capacity
Older Beverly Hills homes on flat lots were built to mid-century standards. The footings weren’t sized for a second floor. Before we frame a single wall, we verify whether the existing foundation and shear capacity can hold the added load. On one project off North Rexford Drive, we found the original footing schedule was undersized, so we brought in the geotechnical report the city required and tied new shear walls into a reinforced foundation before framing the James Hardie-clad upper level. The permit set went through Beverly Hills plan check with a structural letter, and the addition closed out with city inspections, not a county sign-off.
Beverly Hills Plan Check and Design Review
Beverly Hills runs its own municipal building code and design review. A second-story addition may trigger a city-run design review, especially if your home is within view of a hillside or a designated historic district. Budget two to four months for plan check and design review, plus whatever the soils report turns up.
Garage Addition Contractors in Beverly Hills
Garage Addition Contractors in Beverly Hills build out three kinds of projects: a garage expansion for more car or storage space, a garage conversion into a livable room, or a full ADU above or beside the existing garage. In Beverly Hills, most garage additions or conversions run $90,000 – $180,000 depending on whether you’re keeping the existing slab, adding plumbing, or changing the roofline.
Existing Slab and Wall Conditions
Some 1950s- and 1960s-era garage slabs in Beverly Hills weren’t poured with rebar or a moisture barrier. If you’re converting to a bedroom or office, the city may require a slab inspection and possibly a new pour. We tell you that before you sign anything. No hidden discoveries, no change orders slid into the bill.
Hillside and Geotechnical Factors
Garage additions on hillside lots around Coldwater Canyon or the Trousdale area often need a soils report before the city will approve added load bearing. The alluvial soils north of Santa Monica Boulevard can shift, and Beverly Hills plan check wants that documented. We budget for the geotechnical report in the written quote, so the price you see is the price you approve.
Trusted Brands We Service in Beverly Hills
We work with the ADU and addition product lines Beverly Hills homeowners actually ask about. That includes Abodu and Cover for turnkey prefab units, Dvele for high-performance modular builds, and James Hardie cladding systems for exterior finishes that hold up to the local sun and marine-layer moisture. When we spec a product for your lot, we explain why it fits the setback (the required gap between your new structure and the property line) and the neighborhood’s design expectations. No brand loyalty for its own sake. Just honest guidance.
Common Home Addition Contractor Problems We See in Beverly Hills Homes
- L.A. County assumptions that fail Beverly Hills plan check. Contractors who rarely work in this city get surprised when Beverly Hills asks for its own review. We build the city’s requirements into the project calendar from day one, so you don’t lose six weeks waiting.
- Soils reports nobody budgeted for. On the alluvial soils north of Santa Monica Boulevard, the city may want a geotechnical report before it approves added load. We include that line item upfront instead of dropping it on you mid-project.
- Undersized existing footings on 1950s ranches. A second story over a mid-century slab can overload the original footings. We verify structural capacity during the estimate, not after demo starts.
- Design review comments after the contract is signed. Beverly Hills design review can ask for changes to rooflines, window placement, or exterior materials. We prepare you for that process and price realistic contingencies.
Pricing for Home Addition Contractor in Beverly Hills, CA
Here’s what Beverly Hills homeowners should expect to pay, based on the work we’ve quoted in this market:
- Room addition (single story, 200 – 400 sq ft): $120,000 – $220,000
- Second-story addition (400 – 800 sq ft): $220,000 – $380,000
- Garage addition or conversion: $90,000 – $180,000
- Bump-out addition (kitchen or bath extension): $70,000 – $140,000
- Sunroom or enclosed patio addition: $60,000 – $110,000
What changes the cost in Beverly Hills: soil conditions, foundation retrofits, design review requirements, the age of your existing structure, and whether you’re keeping or relocating plumbing. You get a written price before any work starts. No vague allowances, no open-ended line items. Call (472) 248-8213 for a free estimate and a line-item quote you can actually compare.
We Also Serve Cities Near Beverly Hills
Our crews serve Beverly Hills and the surrounding westside, including Home Addition Contractor in Beverly Hills work that starts here and extends to West Hollywood, Studio City, Culver City, and Sherman Oaks. If you’re on the edge of the 90210 or just over the line, we’ll come out and give you the same written pricing and Threshold Verified crew.
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 Home Addition Contractor in Beverly Hills
Beverly Hills runs its own municipal building code and plan-check process, so you’ll go through a city review that can include design review and possibly a hillside or geotechnical review that adjacent cities like West Hollywood or Culver City never require. We’ve taken Beverly Hills additions through this process many times, and we build the schedule and the budget around it. Call (472) 248-8213 to get your project started with a realistic timeline.
Many flat lots north of Santa Monica Boulevard sit on older alluvial soils where Beverly Hills wants a soils report before it will approve added load bearing. The report tells the structural engineer what the ground can actually hold so your foundation is sized correctly. We include it in the written price when the site calls for it. Call (472) 248-8213 and we’ll tell you whether your lot will likely need one.
It depends on the year the garage was built and what the slab inspection shows. Some mid-century Beverly Hills garage slabs were poured without rebar or a moisture barrier, and if you’re converting the space to livable square footage the city may require a new pour. We’ll inspect it during the estimate and tell you what’s realistic. Call (472) 248-8213 for a free evaluation.
For a second-story or garage addition in Beverly Hills, plan on four to eight months total. Design and permit drawings take six to eight weeks. Beverly Hills plan check and design review typically run two to four months. Construction itself is usually three to five months, depending on the foundation retrofit and finish level. We’ll give you a written schedule range before you commit. Call (472) 248-8213 to talk through your specific timeline.
Two things most often change the price: a design-review comment requiring a structural or exterior change, and a soils report finding that forces a deeper or wider footing. We can’t prevent Beverly Hills from asking for what it asks for, but we do price realistic contingencies into the written quote so you’re not blindsided. You’ll always know before we spend a dollar over the line. Call (472) 248-8213 for a free estimate with honest, local pricing.
Get Your Written Beverly Hills Estimate
You should know exactly who’s coming to your home and exactly what you’ll pay before a single tool is lifted. That’s how we’ve operated since 2006. A live person answers our phone 24 hours a day, 7 days a week. No voicemail trees. No callback queues. Call (472) 248-8213 to schedule your free Beverly Hills home addition estimate. You’ll get a name, a face, a photo badge at the door, and a written price locked in before work begins.
Written by Miles Hartwell, owner of Sutton ADU Builders, serving Beverly Hills homeowners since 2006.
