A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in El Dorado Hills, CA
El Dorado Hills is one of the more complex places to build an ADU in the Sacramento region, and that complexity is exactly why homeowners here need a contractor who puts the price in writing before work starts. The custom homes, sloped lots, and strict El Dorado County hillside rules mean ADU projects in El Dorado Hills regularly involve grading, retaining walls, and fire-resistant materials that flat-lot builds never touch. We’re Benson ADU Sacramento, and we build ADUs, home additions, and room additions throughout El Dorado Hills with fixed pricing, real-time project tracking, and a 365-day guarantee on every job. Call us at (279) 254-1808 for a free estimate.
Why El Dorado Hills Homes Are Different
Most El Dorado Hills homes were built from the 1980s onward as custom or semi-custom single-family residences, and a striking number of them sit on sloped lots engineered around views and natural drainage. That terrain changes ADU work immediately: a backyard unit in El Dorado Hills often needs a stepped foundation, a retaining wall, or significant grading before framing can even begin. The county’s scenic corridor and hillside development standards add another layer, requiring design review for structures that would sail through permitting in flatter communities.
Fire safety codes shape the work too. El Dorado Hills sits in a high fire hazard severity zone, so wildland-urban interface (WUI) requirements drive material choices: ignition-resistant siding, ember-resistant vents, and defensible space planning around the unit. Hot, dry summers also mean we schedule concrete pours and exterior work strategically. Then there are the HOAs, particularly in gated communities like Serrano, where architectural guidelines can be stricter than El Dorado County’s own rules. That dual approval track is a real part of ADU work here, and we plan for it from day one.
Our Main El Dorado Hills Services
Three services account for the vast majority of the projects we build in El Dorado Hills. Each has its own dedicated page with local pricing, timelines, and details specific to this area.
ADU Builders in El Dorado Hills
Backyard and attached ADUs in El Dorado Hills usually mean working with sloped terrain, WUI fire codes, and HOA design review. We handle the whole process, including site checks for setback requirements (how far a structure must sit from property lines) and grading plans, and we build with prefab systems from brands like Abodu and Cover when speed matters, or site-built when the lot demands it. Every quote is a written price before any work begins, so there’s no surprise line item after the retaining wall goes in. ADU Builders in El Dorado Hills
Home Addition Contractor in El Dorado Hills
Home additions here often mean expanding a custom home on a hillside lot, which brings foundation engineering and drainage planning into the conversation. We plan additions around existing sightlines, setbacks, and the county’s hillside review process, and we source James Hardie cladding and other fire-rated materials to meet WUI code. Our written-price model means the number we give you covers the grading, the foundation, and the framing. Home Addition Contractor in El Dorado Hills
Room Addition Contractor in El Dorado Hills
Adding a single room, a primary suite, or a home office in El Dorado Hills often requires working within an existing HOA’s architectural standards while meeting the county’s energy and fire codes. We handle both tracks so the project doesn’t stall at design review. Prefab panel systems can shorten the timeline, and we’ll explain exactly what that means for your specific lot before you commit. Room Addition Contractor in El Dorado 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 El Dorado Hills
We’re authorized to build with Abodu, Cover, Dvele, Mighty Buildings, and Boxabl, and we specify James Hardie cladding on projects where WUI fire codes demand it. Parts and panels are sourced directly, which keeps lead times predictable. See our brands for the full range and what each one does best.
Pricing for ADU Company in El Dorado Hills, CA
| Service | Typical range in El Dorado Hills |
|---|---|
| Prefab ADU (studio, no grading) | $120,000 – $180,000 |
| Custom one-bedroom ADU | $180,000 – $260,000 |
| Two-bedroom ADU | $260,000 – $380,000 |
| Attached JADU conversion | $80,000 – $140,000 |
| Detached garage conversion | $100,000 – $170,000 |
| Home addition (400 – 800 sq ft) | $150,000 – $300,000 |
| Primary suite addition | $120,000 – $220,000 |
| Single room addition | $80,000 – $150,000 |
Sloped lots, retaining walls, and WUI fire-rated materials are the three biggest price movers in El Dorado Hills. A hillside ADU with significant grading can land 20 – 30% above the same floor plan on a flat lot. Whatever the site conditions, you’ll get a written price before work starts, and that number does not change unless you change the scope.
Neighborhoods We Serve in El Dorado Hills
We build across the full El Dorado Hills area, from gated communities with tight architectural guidelines to older hillside subdivisions with custom lots. Our crews are familiar with the HOA processes and county review paths in each area.
- Serrano
- Blackstone
- Marble Valley
- Watermark
- Hills of El Dorado
We schedule site visits throughout the week, and our dispatch team coordinates from our Sacramento office to keep drive times short and arrival windows accurate.
Service Area – Cities Near El Dorado Hills
While our crews work throughout El Dorado Hills every week, we also serve nearby communities across the greater Sacramento foothills and valley. If your project sits just outside El Dorado Hills, you’ll find us in Granite Bay, CA, Fair Oaks, CA, Citrus Heights, CA, and Antelope, CA as well. Same written-price guarantee, same background-checked crews.
Serving El Dorado Hills, CA - Our Local Coverage Area
We’re based in the El Dorado 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 El Dorado Hills
After you approve a written quote, we typically begin design and permitting within two to three weeks. El Dorado County’s hillside review and HOA approvals are the two variables that most affect the timeline, and we’ll map both out before you sign anything. Call (279) 254-1808 to get your project in the queue.
Yes. We prepare the architectural submittal package your HOA requires, and we track it alongside the county permit. Communities like Serrano often have their own design review board, and we manage both tracks in parallel so one doesn’t stall the other.
Every project we build in El Dorado Hills carries the same written 365-Day Done Right Promise: if anything we built isn’t right within a full year, we make it right at no charge. It’s part of the written guarantee stamped on your contract, and it travels with the work no matter which neighborhood you’re in.
Ready to see real numbers for your El Dorado Hills project? Call us at (279) 254-1808 and we’ll put a written price in front of you before any work starts.
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 El Dorado Hills Customers Say
"Fixed quote and clear change orders approved by text."
- Trina M."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."Room addition off the kitchen. Framing, drywall, and paint all done well."
- Wade L.
