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 means working with two very different terrains inside one ZIP code. Flat-lot homes south of Ventura Boulevard, especially in Warner Center and Walnut Acres, usually allow clean detached units with standard foundations. Hillside properties north of the Boulevard face steeper setbacks, more grading, and drainage plans that change project scope early. Benson ADU Woodland Hills writes a firm price before any of that work starts, so you know the number before you commit. Call (559) 282-2291 for a free estimate.
Why Woodland Hills Homes Are Different
Most Woodland Hills single-family homes were built in the 1950s through 1970s. You’ll see a lot of mid-century ranch layouts and traditional one-story plans on lots large enough for a detached ADU without crowding the main house. Newer hillside construction leans stucco with tile roofs, and those homes often sit on slopes that trigger extra engineering. The 2003 Ventura Boulevard Specific Plan also shapes what is possible: some pockets have development standards that affect setbacks and height limits for accessory units.
Climate matters just as much as terrain. Summers here regularly push past 100°F, and the Santa Monica Mountains bring real wildfire risk. That means ADUs in Woodland Hills need serious insulation, fire-resistant exterior materials, and in many cases a dedicated cooling system rather than a tie-in to the house. A unit that works fine in a coastal ZIP code will struggle here without those upgrades. Drainage shifts too: the flat grid south of Ventura Boulevard drains one way, while winding hillside roads north of it need retaining walls and swales designed for runoff.
Our Main Woodland Hills Services
Most Woodland Hills homeowners reach out about an ADU or a home addition. Each service has its own dedicated Woodland Hills page with local pricing, timelines, and what to expect.
ADU Builders in Woodland Hills
An ADU in Woodland Hills can be a detached unit in the backyard, a garage conversion, or an attached addition with its own entrance. On flat lots in Walnut Acres or Warner Center, site-built and prefab panel options both work well. In hillside zones, the build needs more engineering: retaining walls, deeper foundations, and drainage that handles slope runoff. We build with Abodu, Dvele, and Mighty Buildings prefab systems alongside site-built options, so you compare real choices instead of one take-it-or-leave-it plan. ADU Builders in Woodland Hills
Home Addition Contractor in Woodland Hills
A home addition in Woodland Hills means expanding the main house, not a separate unit. Common projects include adding a primary suite, extending the kitchen, or building out a family room. Older ranch homes from the 1960s often have straightforward floor plans that expand cleanly, but hillside lots need structural review before walls go up. We provide a written price for the full scope before demolition starts, and every job carries the 365-Day Done Right Promise in writing. Home Addition Contractor in Woodland Hills
Room Addition Contractor in Woodland Hills
A room addition is the smallest scope of the three: one new room attached to the existing structure. In Woodland Hills, that often means a home office, a ground-floor bedroom, or a playroom off the back of a ranch house. The terrain still dictates the foundation work. A flat lot in Warner Center may need only a standard slab, while a hillside property north of Ventura Boulevard can require caissons and additional drainage. We scope that before pricing so your written estimate reflects the actual site. 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 prefab systems from Abodu, Cover, and Dvele, and source James Hardie cladding for fire-resistant exteriors. Panels and components are ordered to the project site. Our brands page shows what each system offers, so you can research independently before we quote.
Pricing for ADU Company in Woodland Hills, CA
Homeowners should know the ballpark before they ever tap “call.” This table reflects typical ranges for Woodland Hills work, based on local labor, materials, and the site conditions we see most often.
| Service | Typical range in Woodland Hills |
|---|---|
| Detached ADU, flat lot (standard finish) | $180,000 – $260,000 |
| Detached ADU, hillside lot (engineering, grading, retaining) | $240,000 – $340,000 |
| Garage conversion ADU | $120,000 – $180,000 |
| Attached ADU (addition with separate entrance) | $160,000 – $240,000 |
| Prefab ADU, flat lot (Abodu, Dvele, or Mighty Buildings) | $200,000 – $300,000 |
| Prefab ADU, hillside lot (crane access, foundation work) | $260,000 – $360,000 |
| Home addition (primary suite, family room) | $140,000 – $250,000 |
| Room addition (single room, attached) | $80,000 – $140,000 |
| Fire-resistant exterior package (James Hardie cladding) | Adds $15,000 – $35,000 |
| Separate HVAC system for ADU | Adds $8,000 – $16,000 |
In Woodland Hills, hillside lots push pricing up: grading, retaining walls, caissons, and drainage all add real cost that a flat-lot build never sees. Fire-resistant materials and separate cooling systems also add line items. Whatever the scope, your written price is set before work begins, and the 365-Day Done Right Promise means if something is not right within a full year, we make it right.
Neighborhoods We Serve in Woodland Hills
Our crews work throughout Woodland Hills, from the flat streets of Warner Center to the hillside roads above Ventura Boulevard. Scheduling depends on scope and the specific site, not the neighborhood, but most estimates are scheduled within a few business days of the first call.
- Warner Center
- Walnut Acres
- South of Ventura Boulevard
- Hillside streets north of Ventura Boulevard
- Woodland Hills West
Service Area – Cities Near Woodland Hills
We also serve ADU and addition projects in nearby communities. If you’re just outside Woodland Hills, call and we’ll confirm coverage: Canoga Park, CA, Topanga, CA, Tarzana, CA, and West Hills, CA.
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
Most Woodland Hills estimates are scheduled within a few business days of your call. Hillside properties take a little longer to price because we review grading and drainage before quoting. Call (559) 282-2291 and we’ll find the first open slot.
Yes, in many hillside areas and wildfire-risk zones. Building codes may require fire-resistant siding, tempered glass, and ember-resistant vents. James Hardie cladding is a common choice here. We factor those requirements into your written estimate from the start, so there is no surprise add-on later.
Most flat lots in Warner Center and Walnut Acres accommodate a detached unit. Hillside lots can work too, but they need more engineering. The written quote reflects your actual site conditions, not a generic number. Call (559) 282-2291 and we’ll assess your property before pricing anything.
Call Benson ADU Woodland Hills at (559) 282-2291 for a free, written estimate on any ADU, home addition, or room addition project. No verbal ballparks that shift later. Just a real price, a real plan, and a 365-day guarantee in writing.
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
"Room addition off the kitchen. Framing, drywall, and paint all done well."
- Wade L."Fixed quote and clear change orders approved by text."
- Trina M."Communication was the best part. I always knew what was happening that week without having to ask."
- Dolly N.
