Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across West Hills
Most general contracting work in West Hills costs between $9,000 and $130,000 depending on scope, with kitchens running $14,000 – $45,000 and full home additions reaching $45,000 – $130,000. Before any work starts, you get a written price, the name and photo of every crew member coming to your door, and a 365-day guarantee in plain language. Call (805) 309-3386 for a free estimate from our General Contractor team serving West Hills. We know the hillside lots, the 1960s-80s construction patterns, and the drainage problems that show up once walls come open.
Why Mason Remodeling Co Thousand Oaks Is West Hills’s Preferred General Contractor Company
Homeowners in West Hills deal with a specific kind of old-house reality: custom hillside homes built on expansive soils, many with original drainage and framing that no longer meet current code. Our crews work these streets regularly, from the neighborhoods off Roscoe Boulevard to the hillside lots near Bell Canyon, so we know what inspectors flag and what surprises hide behind drywall. We are part of the Threshold Group family of home-service companies, founded in 2004, and every crew member is background-checked, identity-verified, and introduced to you by name and photo before arrival.
West Hills customers tell us the same things: they want a written price, a crew they can identify at the door, and a contractor who does not disappear when a remodel gets complicated. That is the Threshold Standard, and it is not a marketing phrase. It is the process we follow on every job, from a small bathroom remodel to a full ADU construction. Our crews arrive in clean marked uniforms, show photo ID badges at the door, and work clean. The 365-Day Done Right Promise covers the workmanship: if anything is not right within a year of completion, we make it right at no cost to you.
Nobody wants to open their home to a stranger. So we do not make you guess. The name and photo of the technician comes to you before the visit. A live person answers our phones 24 hours a day, every day, including weekends. And when you call (805) 309-3386, you talk to someone who can actually help you schedule an estimate, not a call tree.
Styles & brands we work with
Residential General Contractor in West Hills
A residential general contractor in West Hills manages the full scope of a remodel or addition: demolition, structural work, rough-in plumbing and electrical, drywall, finishes, and the permit inspections in between. Here, that almost always means opening up a 1960s-80s custom home and finding conditions the original builder never intended anyone to see again. We handle the inspection-first reality: once walls are open and a permit is active, code upgrades get triggered, and the scope changes. The way we keep that from becoming a budget disaster is simple. Every contract includes written allowances for the most common West Hills conditions, and any surprise change is priced and approved in writing before we touch it.
Permit-Triggered Code Work
When a remodel opens walls in a 1960s West Hills home, the permit typically triggers requirements for current electrical grounding, updated panel capacity, and sometimes structural shear-wall upgrades. We budget for these before demolition starts, not after. A written allowance covers the upgrades that inspectors most often require in this housing stock, and if the actual cost runs lower, you keep the difference.
Drainage and Foundation Work
South of Victory Boulevard, many homes still run original 1970s hillside drainage systems that were sized for a different climate. We scope these before any remodel passes inspection. If a 3-inch corrugated line has collapsed under expansive soil movement, we write the reroute into the contract as a line item, not a surprise.
Hire a General Contractor in West Hills
When you hire a general contractor in West Hills, you are hiring someone to coordinate every trade, order materials, schedule inspections, and carry the liability if something goes sideways. For a kitchen remodel in West Hills, plan on $14,000 – $45,000. A bathroom remodel runs $9,000 – $28,000. A home addition starts around $45,000 and climbs to $130,000 depending on foundation work and hillside engineering. These are the real ranges for this market, and our written quotes show exactly where each dollar goes.
What the Contract Must Include
A written price before any work starts is not optional here. It is how we protect you from the open-ended verbal estimate. We write the scope, the allowances, the draw schedule, and the guarantee terms into the contract, so when a change order comes, it is a written line item you approve before work continues.
Who Comes to Your Door
Every crew member is identity-verified, background-checked, and uniformed. You get the name and photo before the visit, and they show a photo ID badge at the door. For homeowners who are often alone, parents with kids, or older adults, that is the difference between calling a contractor and actually letting one inside.
Trusted Brands We Service in West Hills
We install and service specification-grade products from brands like CGI, CWS, and ES Windows, which matters on West Hills hillside homes where window failures mean water intrusion and heat gain. Because we coordinate scheduling and materials from our Los Angeles office, we can pull together product lead times and keep West Hills projects moving without the usual back-and-forth between suppliers. If a window system is part of your remodel, we will spec it correctly for your home’s exposure and write the exact product cost into the quote.
See the difference
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AfterCommon General Contractor Problems We See in West Hills Homes
- Undersized 1970s hillside drainage. South of Victory Boulevard, original corrugated drain lines crush under expansive soil movement, sending water toward foundation walls and triggering erosion on the slope side. We scope the line before the remodel, not after the water damage shows up.
- Expansive soil stress on retaining walls. Winter rains move West Hills soil, and older retaining walls often show horizontal cracking or lean. A remodel that touches exterior walls or decks needs a retaining wall assessment first, or the new work inherits the old failure.
- Outdated wiring and undersized framing in 1960s homes. Once a permit opens the walls, inspectors flag aluminum wiring, ungrounded circuits, and framing that no longer meets shear requirements. A written allowance covers these, so the budget does not blow up mid-project.
- Failed waterproofing on hillside stem walls. Many West Hills homes have original waterproofing that never got the modern peel-and-stick membrane or drainage board treatment. When we open a lower floor or a hillside-facing wall, we re-waterproof the stem wall before closing it back up.
Pricing for General Contractor in West Hills, CA
These are the real price ranges for general contracting work in West Hills, based on what our crews actually see on these hillside lots and 1960s-80s homes. A small bathroom remodel runs $5,000 – $12,000. A kitchen remodel starts at $14,000 and tops out around $45,000 for a full custom job. Home additions run $45,000 – $130,000, and ADU construction runs $90,000 – $220,000 depending on foundation engineering and hillside access. What moves the price: the condition of original drainage, whether framing needs shear upgrades, and whether the permit triggers electrical or foundation code work. We write every one of these into the contract as a line item or a documented allowance. Call (805) 309-3386 for a free written estimate.
| Project Type | Typical Range in West Hills |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Roof Replacement | $8,000 – $20,000 |
West of Valley Circle Drive, our crew opened up a 1978 hillside home and found the original drainage line was a 3-inch corrugated pipe crushed by expansive soil movement. We scoped the work in writing, notched the contract with an allowance for a complete 4-inch Schedule 40 PVC reroute, and after the rough-in and inspection sign-off, we rebuilt the foundation wall and re-waterproofed the stem wall before the remodel continued. That is how we handle surprises in West Hills: with a written price, not a phone call asking for more money.
We Also Serve Cities Near West Hills
Our crews serve West Hills and the surrounding west San Fernando Valley communities. If you are in Canoga Park, Calabasas, Chatsworth, or Topanga, the same written pricing, crew verification, and 365-day guarantee apply. For more about our work across the region, see General Contractor in West Hills.
Serving West Hills, CA - Our Local Coverage Area
We’re based in the West 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 General Contractor in West Hills
We write a documented allowance into the contract before demolition starts, covering the most common West Hills code triggers: upgraded electrical grounding, panel capacity, and shear-wall requirements. When the inspector flags an upgrade, we price it, you approve it in writing, and we proceed. No surprise invoices. Call (805) 309-3386 to talk through your specific project.
Yes. Retaining wall assessment and repair is part of many West Hills remodels, especially on hillside lots where winter rain saturates expansive soil and shifts older walls. We scope the wall’s condition before the remodel starts, write any repair work into the contract, and coordinate the engineering if required. Call (805) 309-3386 for a free estimate.
For older hillside homes south of Victory Boulevard, we typically recommend a structural contingency allowance of 10 – 15% of the total project cost, specifically for drainage reroutes, foundation repairs, and retaining wall work that original 1970s construction did not account for. We show this as a written line item in your quote. Call (805) 309-3386 for a detailed breakdown.
Yes. Every large project, including home additions and ADU construction, includes a written draw schedule tied to completed milestones: foundation, rough-in, drywall, and final inspection. You approve each draw before it is due, and the schedule is part of your contract. Call (805) 309-3386 to review a sample draw schedule.
In 1980s West Hills homes, we most often find particle board subfloor that has swelled and crumbled from years of minor water intrusion, usually at slider door thresholds and under windows. When we open the floor for a remodel, we replace the damaged sections with plywood and address the water source before laying new flooring. Call (805) 309-3386 and we will inspect yours.
Call Mason Remodeling Co Thousand Oaks at (805) 309-3386 for a free written estimate. You get a real price before work starts, a named crew you can identify at the door, and a 365-day guarantee in writing. Serving West Hills, Canoga Park, Calabasas, Chatsworth, and Topanga.
Written by Isaac Pruett, Owner at Mason Remodeling Co Thousand Oaks, serving West Hills since the company’s founding in 2004.
