A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Newhall, CA
Building an ADU in Newhall, CA usually costs between $180,000 and $350,000 for a complete backyard unit, depending on whether you choose prefab or site-built. That’s the honest ballpark before you ever pick up the phone. Newhall is one of the older corners of the Santa Clarita Valley, which means most projects happen on tight lots with mature trees, hillside grading, and a patchwork of home ages that keeps every job interesting. We’re Benson ADU Builders, led by Troy Eastman, and we put every price in writing before work starts. Call (903) 568-7222 and you’ll reach a live person who can walk you through what’s realistic on your property.
Why Newhall Homes Are Different
Newhall is the historic core of the Santa Clarita Valley, and its housing stock spans everything from 1940s bungalows near Main Street to 1990s tract homes up in the hills off Sierra Highway. That matters for ADU work because older foundations were rarely engineered with a second structure in mind, and many backyards slope enough that flatwork and retaining blocks become part of the budget before framing even starts. Trees are a real factor here too: mature oaks pepper the neighborhoods around Newhall Avenue and Lyons Avenue, and a heritage tree can force a reset on your unit’s footprint. So can the city’s hillside grading rules, which kick in faster than most homeowners expect on sloped parcels in areas like Happy Valley and the canyons off San Fernando Road. The heat is another Newhall constant. Summer stretches run three-digit for weeks, which pushes us toward panel systems that go up fast and insulate well. We plan every Newhall ADU around the actual lot, not a brochure drawing.
Our Main Newhall Services
Most Newhall homeowners reach out about one of three things: a standalone ADU in the backyard, a true home addition that expands the main house, or a simpler room addition to capture space over a garage or extend a wing. Here’s how each one plays out here.
ADU Builders in Newhall
A backyard ADU in Newhall means either a prefab unit from a brand like Abodu, Dvele, or Mighty Buildings, or a site-built structure framed on your lot. Prefab tends to save months and keeps costs predictable; site-built gives you total say over the layout. On Newhall’s smaller, older lots, setbacks and utility runs dictate a lot of what’s possible. We handle the design, the permit set, the site prep, and the full build, with a written price before anything starts. ADU Builders in Newhall covers this work in detail on its own page.
Home Addition Contractor in Newhall
Home additions in Newhall often come down to matching an existing structure that’s decades old: roofline, stucco texture, window style, floor height. It’s not a problem, it just takes more care than building new on a clean pad. Whether you’re adding a primary suite or pushing the kitchen out into the yard, the grade of your lot and the age of the existing foundation set the engineering path. We build these additions with the same written-price rule that governs everything we do. Home Addition Contractor in Newhall goes deeper on this service.
Room Addition Contractor in Newhall
A room addition in Newhall is the most surgical way to get more square feet without a full remodel. A nursery over the garage, a home office off the back of the dining room, a den conversion on the ground floor of a hillside house. These are the projects where the existing roofline and foundation matter most, and where a bad match shows up in the final look. We pull permits, tie in utilities properly, and finish with James Hardie siding or stucco that matches what’s already there. Room Addition Contractor in Newhall has the full breakdown.
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 Newhall
We’re authorized to build with Abodu, Cover, Dvele, and Mighty Buildings, which gives Newhall homeowners real options instead of whatever one subcontractor happens to know. Most prefab panels and modules arrive on a truck ready for a crane; our crews handle site prep, foundations, and the finish work on our brands so nothing stalls mid-build.
Pricing for ADU Company in Newhall, CA
| Service | Typical range in Newhall |
|---|---|
| Prefab ADU (studio to 2-bed) | $180,000 – $350,000 |
| Site-built ADU (custom) | $250,000 – $450,000 |
| Detached garage conversion to ADU | $120,000 – $220,000 |
| Attached JADU (junior ADU) | $80,000 – $150,000 |
| Primary suite addition | $120,000 – $220,000 |
| Kitchen expansion (main house) | $100,000 – $180,000 |
| Second-story addition | $200,000 – $350,000 |
| Room addition (single room) | $80,000 – $160,000 |
| Foundation and retaining work (hillside lots) | $15,000 – $45,000 |
| Utility tie-in and trenching | $5,000 – $15,000 |
What pushes a Newhall price up faster than anything is the lot: slope, soil, access for a crane or a concrete truck, and whether a protected tree sits in the middle of where your unit should go. That’s why we give every homeowner a written price before any work starts, not a verbal range that drifts once the excavation begins.
Neighborhoods We Serve in Newhall
Our crews work throughout Newhall and the surrounding side canyons, from the flats near downtown to the hillside parcels that need a little more engineering. We schedule projects across the area within a typical two-week window from signed contract to mobilization, weather and city reviews permitting.
- Happy Valley
- Old Orchard
- Newhall Hills
- Plum Canyon
- Downtown Newhall
Service Area – Cities Near Newhall
While this page covers Newhall specifically, our ADU and addition crews also serve the rest of the Santa Clarita Valley. Homeowners in Santa Clarita, CA, Valencia, CA, Stevenson Ranch, CA, and Canyon Country, CA can get the same written pricing and the same 365-Day Done Right Promise.
Serving Newhall, CA - Our Local Coverage Area
We’re based in the Newhall 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 Newhall
Most Newhall projects move from signed contract to mobilization within about two weeks, once design and permit documents are set. The design and permitting phase itself typically runs longer, and hillside parcels with grading or tree concerns can add review time. Call (903) 568-7222 for a straight answer on your lot.
We prepare and pull the permit set for every Newhall project, including HOA submittals when your community has design review. If a hillside or protected tree triggers a special condition, we flag it in the written price before work starts, so you’re never surprised by a change order mid-build.
Yes. A panelized or modular unit from Abodu, Dvele, or Mighty Buildings can cut months off the total timeline because the shell is built in a factory while site work happens concurrently on your lot. Site-built gives you full design freedom but takes longer. Our written price covers either path, so you can compare real numbers rather than guessing.
If you’re anywhere in Newhall and want a real price for an ADU, a home addition, or a room addition, call (903) 568-7222. Troy Eastman and the team will give you a written number before anything 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 Newhall 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.
