A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable ADU Builders Across Antelope
Adding an ADU to your Antelope property is one of the smartest moves a homeowner can make right now. Sacramento County’s pre-approved plans and relaxed setback rules have opened the door, but the real work starts when you look at your actual lot: a 1980s stucco home, a mature oak in the back corner, and a backyard that’s wider than it is deep. That’s where our ADU Builders team comes in. We know Antelope’s housing stock, its tree ordinances, and its hard groundwater. Call (279) 254-1808 and we’ll walk your property with you, in person, before you spend a dollar.
Why Benson ADU Sacramento Is Antelope’s Preferred ADU Builders Company
Antelope homeowners keep calling us back because we do something most builders won’t: we put the price in writing before work starts. Not a verbal range. Not a ballpark. A written, line-item price you can hold us to. Troy Eastman leads our team, and he’s built the whole operation around one idea: you should know exactly what you’re paying and exactly who’s walking onto your property. Every technician is background-checked and shows up in uniform. Every project carries a 365-Day Done Right Promise. If something isn’t right within a full year, we make it right.
We also answer the phone. A live person, 24/7, no voicemail loops. When you’re pricing a detached ADU or a garage conversion in Antelope and you have a question at 9pm, you get a human. That matters more than most people realize until they’ve tried calling three other contractors and gotten three machines.
ADU Plans in Antelope
ADU Plans in Antelope are where most projects either save you twenty thousand dollars or cost you thirty. Sacramento County’s pre-approved plan library is a genuine shortcut: the county has already reviewed these designs for code compliance, which means your permit review window shrinks dramatically compared to fully custom drawings. That’s real time saved, and time is money when you’re paying a mortgage while you wait. A typical pre-approved plan set for Antelope runs $4,000 – $8,000 when we coordinate it, versus $12,000 – $25,000 for fully custom architectural plans.
Pre-Approved vs. Custom: Which Fits Your Lot
The pre-approved route works beautifully on rectangular lots with standard setbacks. But Antelope’s 1980s – 2000s homes often sit on 6,000 – 8,000 sq ft lots that are wider than deep, with mature redwoods or oaks hugging the property line. If your backyard has a protected tree within 20 feet of where the ADU would go, a stock plan may not fit without a redesign. We’ll tell you in the first walkthrough. No charging you to find out later.
What a Good Plan Set Actually Includes
A real plan set isn’t just floor plans. You need site plans showing setbacks, elevation drawings the county will actually approve, structural engineering for the foundation, and Title 24 energy calculations. Skip any of those and your permit stalls. We bundle all of it into one written price, and if the county kicks something back, revisions are on us until it passes.
ADU Contractor in Antelope
ADU Contractor in Antelope is a title that gets thrown around loosely by general contractors who do mostly kitchens and baths. An ADU is different. It’s a full dwelling unit: separate electrical service, separate HVAC, its own water heater, and code requirements the county enforces strictly. When you hire us, you get a contractor who lives and breathes ADUs, not someone learning on your lot. A complete detached ADU in Antelope typically runs $180,000 – $320,000 depending on size, finishes, and site conditions. A garage conversion lands lower, usually $90,000 – $160,000.
Why Your Lot Dictates the ADU, Not the Other Way Around
Before we quote anything, we walk your entire property. Antelope’s slab-on-grade foundations mean drainage and grading questions have to be answered before we pour concrete for a detached unit. The attached garages so common on 1980s and 1990s homes here create a conversion opportunity, but the slab edge and framing need inspection first. We’ve seen too many homeowners buy a plan online, then discover their garage wall has pulled away from the slab. We catch that before you sign anything.
Written Change Orders, Not Verbal Surprises
Here’s how we handle the unknown. Every contract includes a clearly written allowance for the common surprises Antelope homes throw at us: framing corrections, corroded supply lines, insulation upgrades. If we open a wall and find something we didn’t expect, you get a written change order with a fixed price before we touch it. You approve it, or we don’t do the work. No scope creep billed after the fact. Ever.
Trusted Brands We Service in Antelope
We’re authorized to build with the industry’s leading prefab and materials brands, and in Antelope we find homeowners research options before calling. That’s healthy. We carry relationships with Abodu, Cover, and Dvele for prefab ADU shells, plus James Hardie cladding for site-built and custom units. What this means for you: we can compare a factory-built Abodu unit against a site-built custom ADU on real numbers, not marketing brochures. If a prefab panel arrives with a defect, we handle the claim. If you’d rather go site-built with Hardie siding, we’ve got the local crews who frame it correctly the first time.
Common ADU Builders Problems We See in Antelope Homes
- Protected redwoods and oaks kill stock plans. Many Antelope backyards have mature trees protected by Sacramento County ordinances. A detached ADU that fits on paper often needs an arborist report and a siting redesign once the tree’s root zone is mapped. We check this in the first walkthrough.
- Garage slabs and framing hide damage. 1980s – 2000s homes here were built on expansive soils. We regularly find garage wall framing that’s pulled away from the slab, plus dry rot behind stucco where water wicked up from the foundation. A conversion quote that skips the slab inspection is a guess.
- Hard groundwater chews through tankless water heaters. Antelope’s groundwater has high mineral content. A tankless unit installed without a scale inhibitor can clog its heat exchanger within a year. We spec descaling valves and, where needed, a water softener loop in the ADU plumbing.
- 100°F+ summers punish under-insulated ADUs. The county’s minimum Title 24 insulation isn’t always comfortable in an Antelope August. We typically upgrade wall and roof insulation beyond code minimum because a hot ADU is a rental unit that turns over constantly, or a mother-in-law suite nobody wants to use.
Pricing for ADU Builders in Antelope, CA
Let’s talk real numbers for Antelope. A detached studio ADU (400 – 500 sq ft) typically runs $180,000 – $240,000. A one-bedroom detached unit lands at $220,000 – $320,000. Garage conversions, depending on whether we’re converting an attached or detached garage and what the slab tells us, run $90,000 – $160,000. A Junior ADU (JADU), usually a bedroom plus bath inside the existing home footprint, starts around $70,000 – $110,000. What moves the price? Site access for concrete trucks, tree setbacks forcing a redesign, and what we find when we open walls. Every estimate is free, written, and line-item. Call (279) 254-1808 and we’ll have numbers to you within days, not weeks.
We Also Serve Cities Near Antelope
While this page focuses on Antelope, our crews regularly work in Antelope and the surrounding communities. We serve Elverta, Citrus Heights, Fair Oaks, and Granite Bay with the same written pricing and 365-Day Done Right Promise. If you’re just over the line in any of these areas, call (279) 254-1808 and we’ll confirm we can cover your project.
Serving Antelope, CA - Our Local Coverage Area
We’re based in the Antelope 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 Builders in Antelope
Pre-approved plans have already passed the county’s code review, so your project skips the back-and-forth that typically adds 4 – 8 weeks to a custom plan set. The county still reviews your site plan for setbacks and tree protection zones, but the building design itself is already vetted. In Antelope, where protected oaks and redwoods complicate siting, the site review remains the bottleneck, but pre-approved plans can still shave meaningful time off the front end. Call (279) 254-1808 and we’ll tell you honestly whether a pre-approved plan fits your specific lot before you commit.
Possibly, and that’s exactly why we inspect first and write allowances into every contract. Antelope homes from the 1980s – 2000s often hide framing that’s pulled away from the slab, dry rot behind stucco, or corroded supply lines from hard groundwater. When we find these, you get a written change order with a fixed price before we continue. You approve it or we stop. The price doesn’t move without your signature. Call (279) 254-1808 to schedule a garage inspection before you budget for the full conversion.
Usually not directly beneath the canopy, and Sacramento County tree ordinances may require an arborist report and a tree protection plan before you pull permits. The root zone extends well beyond the canopy dripline, and construction within that zone can kill a protected tree slowly over several years. We work with local arborists in Antelope to site ADUs where they won’t trigger costly removal permits or damage roots. Call (279) 254-1808 and we’ll map your tree constraints during the free estimate walkthrough.
We spec insulation beyond Title 24 minimum as standard on Antelope ADUs: upgraded wall cavity insulation, R-38 or better in the roof, and a ventilation strategy that moves hot air out of the attic rather than baking the living space below. A poorly ventilated ADU in an Antelope August is a tenant complaint generator and a higher cooling bill. We’d rather build it right the first time. Call (279) 254-1808 to see our insulation specs for your project type.
We install a scale inhibitor or descaling valve at the ADU’s water entry point, and when the project warrants it, a dedicated water softener loop. Antelope’s groundwater mineral content is high enough to clog a tankless heat exchanger within a year if left untreated, which is a repair most plumbing warranties won’t cover. We spec the right protection during design so you’re not replacing fixtures eighteen months after move-in. Call (279) 254-1808 for a written plumbing spec on your ADU.
The Hard Part No One Talks About
On a 1990s stucco home near Antelope Road, our crew opened the garage wall to convert it into an ADU and found the original 2×4 framing had pulled away from the slab due to soil movement, plus a corroded copper supply line from the area’s hard groundwater. We pulled permits, sistered the studs, replaced the line with PEX, and added a tankless water heater with a scale inhibitor – all priced as written change orders before we touched anything. That’s the difference between a builder who inspects first and one who hopes for the best. In Antelope, hope is not a construction strategy. Every older home has secrets. Our job is to find them before they find you.
If you’re serious about adding an ADU to your Antelope property, start with a free in-person walkthrough. We’ll look at your lot, your trees, your garage slab, and your water. Then we’ll put the plan and the price in writing. Call (279) 254-1808 or request your free estimate through our site. Troy Eastman and the team are ready when you are.
Written by Troy Eastman, Owner at Benson ADU Sacramento, serving Antelope with written pricing and the 365-Day Done Right Promise.
