A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Woodland Hills, CA
Adding an ADU in Woodland Hills usually runs between $180,000 and $450,000 depending on size, finish level, and whether you go prefab (Abodu, Cover, Boxabl) or site-built. What makes Woodland Hills different from other parts of the Valley is the mix: canyon lots with slope and drainage considerations, flat 1960s tract homes on generous R-1 parcels, and a real patchwork of HOA and non-HOA streets. You need a contractor who has actually worked both a Warner Center-adjacent cul-de-sac and a hillside off Mulholland. That’s the work we do every week. Call (903) 568-7222 and we’ll put the numbers in writing before anything else happens.
Why Woodland Hills Homes Are Different
Woodland Hills housing stock runs from 1950s ranch homes south of Ventura Boulevard up to larger hillside properties stacked along the canyons toward Topanga. That spread means two different jobs. On flat lots in neighborhoods like Walnut Acres and near Pierce College, setbacks are usually straightforward and the biggest planning questions are lot coverage and parking. On hillside parcels, retaining walls, drainage, and foundation engineering drive both cost and schedule.
The climate matters too. Summer heat in Woodland Hills regularly hits triple digits, which pushes us toward wall assemblies and Mini-split systems sized for real cooling loads, not the mild assumptions a coastal builder might use. And because the area sits in a Very High Fire Hazard Severity Zone in spots, some homes are subject to fire-hardening requirements that affect cladding choices, eave details, and deck materials. We plan for that from the first site visit.
Our Main Woodland Hills Services
Most Woodland Hills homeowners call us about one of three things: a detached backyard ADU for rental income or family, a full home addition to expand the main house, or a single room addition like a primary suite or home office. Here’s how each one plays out in this part of the Valley.
ADU Builders in Woodland Hills
A detached ADU in Woodland Hills typically runs $180,000 to $450,000 depending on whether you go prefab panel or fully site-built. We’re authorized to build with Abodu, Cover, Dvele, Mighty Buildings, and Boxabl, so you get actual product options instead of one take-it-or-leave-it design. On a standard 6,000 to 7,500 square foot Valley lot, a 1-bedroom ADU under 800 square feet usually fits code with a modest setback adjustment. See the full breakdown at ADU Builders in Woodland Hills.
Home Addition Contractor in Woodland Hills
Expanding the main house in Woodland Hills means working around existing foundations that are often 50 to 70 years old. We trench, pin, and tie into those slabs correctly, which matters in expansive clay soil that shifts through hot summers and brief wet winters. A second-story addition on a post-war ranch is common here, and it needs structural evaluation plus a realistic plan for HVAC extension. Details at Home Addition Contractor in Woodland Hills.
Room Addition Contractor in Woodland Hills
A single room addition in Woodland Hills, like a home office or a ground-floor primary suite, is the fastest way to add square footage without full remodel disruption. On narrow canyon lots, we frequently work within side-yard setback constraints and design around existing drainage patterns. Prefab panels from Dvele or Mighty Buildings can shorten framing time noticeably. The full scope and pricing are at Room Addition Contractor in Woodland 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 Woodland Hills
We build with and service the major prefab ADU brands: Abodu, Cover, Dvele, Mighty Buildings, and Boxabl, plus James Hardie cladding systems. Panels and materials are coordinated through local suppliers and delivered to Woodland Hills job sites directly. See our brands for the full list and spec sheets.
Pricing for ADU Company in Woodland Hills, CA
| Service | Typical range in Woodland Hills |
|---|---|
| Detached ADU (prefab) | $180,000 – $320,000 |
| Detached ADU (site-built) | $280,000 – $450,000 |
| ADU site prep & foundation | $25,000 – $60,000 |
| ADU utility connections | $10,000 – $25,000 |
| Home addition (single story) | $250 – $450 per sq ft |
| Home addition (second story) | $350 – $600 per sq ft |
| Room addition (single room) | $80,000 – $150,000 |
| Kitchen addition | $120,000 – $220,000 |
| Primary suite addition | $110,000 – $200,000 |
| Permit & design fees | $8,000 – $25,000 |
Hillside lots in Woodland Hills push prices toward the upper end of those ranges because of retaining walls, caissons, and drainage engineering. Every project starts with a written price before any work begins, so you’ll never see a change order show up after demo day.
Neighborhoods We Serve in Woodland Hills
Crews cover all of Woodland Hills including the pockets where work conditions shift a lot from street to street. Response times are generally same-week for estimates across the area.
- Walnut Acres
- Warner Center area
- South of Ventura Boulevard
- Canoga Park-adjacent east side
- Hillside streets off Mulholland Drive
Service Area – Cities Near Woodland Hills
Beyond Woodland Hills, our ADU and addition crews regularly work in Canoga Park, CA, West Hills, CA, Tarzana, CA, and Topanga, CA. If you’re just over the line from any of those, schedule through the same team and you’ll get the same written-price process.
Serving Woodland Hills, CA - Our Local Coverage Area
We’re based in the Woodland 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 Woodland Hills
Once you approve a written scope and price, we typically begin design and permit work within one to two weeks. Actual construction start depends on city plan-check timing, which varies by project complexity. Call (903) 568-7222 and we’ll walk you through a realistic Woodland Hills timeline for your lot.
Some do. California state law limits HOA ability to block ADUs, but individual associations can still impose architectural review and aesthetic standards. We check HOA covenants during the estimate process so you’re not surprised later. Call (903) 568-7222 to have us review yours.
Yes. Hillside parcels need soil reports, retaining wall design, and often caisson foundations, and we coordinate those directly with engineers who have worked the canyon areas around Woodland Hills. The written estimate includes those costs up front, not as a surprise add-on.
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 Woodland Hills 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.
