Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Los Altos Hills
If you’re planning a kitchen remodel, bathroom update, or room addition in Los Altos Hills, you need a General Contractor who understands how this town actually works. Permits here go through Santa Clara County, not a busy city building department, and most properties run on private wells and septic systems. That changes the sequencing of every job, from the first site visit to the final inspection. Our team at Mason Remodeling handles that complexity every week, and we put every price in writing before the first tool is unpacked. Call (803) 680-2547 to get your project scoped correctly from day one.
Why Mason Remodeling Is Los Altos Hills’s Preferred General Contractor Company
Los Altos Hills homeowners don’t open the door to strangers. They open it to people whose name, face, and background they already know. Every Mason Remodeling technician is background-checked, identity-verified, arrives in a clean marked uniform, and shows a photo ID badge before stepping inside. We call it The Threshold Standard, and it’s how we’ve handled every project since 2004. You get the technician’s name and photo before the visit, so there’s never a surprise at the door.
Our crews know the hills. We understand sloped lots off Purissima Road, older ranches near Page Mill, and the drainage issues that come with hillside properties above the South Bay fog line. That local knowledge changes how we frame a scope, sequence a permit package, and price an allowance line. When a Los Altos Hills homeowner asks what a project will really cost, we give them a written price, not a verbal ballpark that grows later. And every completed job carries our 365-Day Done Right Promise: if the work isn’t right within a year of completion, we make it right at no cost.
Styles & brands we work with
General Contractor Services in Los Altos Hills
General Contractor Services in Los Altos Hills means one accountable firm managing the full build: permits, demolition, rough framing, mechanical trades, finishes, and the final county inspection. Homeowners come to us when the project is too big for a handyman and too important to hand to a rotating cast of subs. We act as the single point of responsibility, with a written scope of work and a signed draw schedule before demo begins.
Kitchen and Bathroom Remodels
A hillside kitchen remodel in Los Altos Hills typically runs $14,000 – $45,000 depending on layout changes, cabinet grade, and structural work. Bathroom remodels run $9,000 – $28,000. On older homes off Moody Road, we regularly find subfloor rot and outdated plumbing that must be addressed when walls are open. We note these as allowance lines in the original quote, so you’ve already approved the cost before we touch it.
Room Additions and Whole-Home Work
Home additions in Los Altos Hills start around $45,000 and climb to $130,000 or more when site work, foundation piers, and well/septic tie-ins are required. Whole-home remodels vary by footprint and condition, but expect every major project to include county planning review, which adds lead time before permits are issued. We manage that calendar for you, not around you.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Construction Company in Los Altos Hills
A Construction Company in Los Altos Hills is more than a general contractor with a truck. It’s the firm that coordinates Santa Clara County plan checks, schedules the structural engineer, pulls electrical and plumbing permits, and gets the inspection sign-off that clears your final punch list. Los Altos Hills has no typical city building department, which means additions and load-bearing changes route through county planning. Skip that step and you’ve stalled the project before it starts.
ADU Construction and Garage Conversions
ADU construction in Los Altos Hills runs $90,000 – $220,000, driven largely by foundation work on sloped lots, septic capacity reviews, and fire access requirements. Garage conversions are a tighter scope at $30,000 – $80,000, but still require county approval when they add living space. We prepare the full permit package, including septic and drainage reviews, before we ever request a start date.
Cabinetry, Counters, and Interior Finish Work
Cabinet installation ranges from $4,000 – $13,000, and countertop installation from $2,000 – $6,500, depending on material and linear footage. We’re specification-grade partners with KraftMaid, Wellborn, Cambria, and Silestone, which means you’re not choosing from builder-grade leftovers. Every line item is written into the original quote.
Trusted Brands We Service in Los Altos Hills
Los Altos Hills homeowners often ask whether we can work with the specific products they’ve already researched. The answer is yes. We regularly install KraftMaid and Wellborn cabinetry, Cambria and Silestone countertops, Kohler and Moen fixtures, and GAF or CertainTeed roofing materials. When you’ve seen a product at a showroom or in a neighbor’s home near Elena Road, we can get it, spec it, and install it without marking it up as a mystery line item. If you’re curious about prefab panel systems from brands like Abodu or Mighty Buildings, we’ll tell you honestly whether they fit your hillside lot and budget. No upsell, just a straight read.
Common General Contractor Problems We See in Los Altos Hills Homes
- County planning surprise: A contractor on a flat-lot city job treats Los Altos Hills like it has a local building counter. It doesn’t. Additions and load-bearing changes route through Santa Clara County, and missing that step stalls permits and blows the draw schedule.
- Well and septic unknowns: Quoting a hillside house without allowances for well line extensions, septic capacity, or drainage improvements is a fast way to see a $15,000 change order after demo. We price those lines before you sign.
- Hillside foundation reality: Sloped lots off Robleda Road and above Purissima Creek often need piers, retaining walls, or drainage swales before framing can start. A flat-lot quote doesn’t cover that, and the homeowner absorbs the delta.
- Premature start dates: Promising a start date before the permit is issued means rough-in begins on an unapproved scope. When the inspector flags it, you’re opening finished walls to fix work that should never have been done. We wait for the permit. Every time.
See the difference
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AfterPricing for General Contractor in Los Altos Hills, CA
These are real Los Altos Hills market prices, based on hillside lot conditions, county permitting, and the cost of licensed trades on the Peninsula. They’re ranges because every house sits on different ground, but they won’t surprise you after demo.
| Project Type | Typical Los Altos Hills Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Cabinet Installation | $4,000 – $13,000 |
| Countertop Installation | $2,000 – $6,500 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Garage Conversion | $30,000 – $80,000 |
The biggest cost drivers are structural changes, hillside foundation work, and well or septic tie-ins. We give you a written price with named allowances, not a roll of the dice. Call (803) 680-2547 and we’ll walk the site, map the scope, and hand you a number you can plan around.
On a Hillside Lot Off Robleda Road
On a hillside lot off Robleda Road, our crew took a 1970s ranch kitchen down to the studs. We pulled permits for the electrical and plumbing rough-in, replaced the load-bearing wall with a new beam, and reframed the subfloor where old leaks had softened it. Then we set KraftMaid cabinets with a Cambria countertop and a Blanco sink under a signed draw schedule. The written scope of work and allowances were locked before demo, so the only change order was the homeowner’s mid-job upgrade to a Kohler faucet. The inspection sign-off cleared the final punch list in one pass. That’s how a Los Altos Hills job should finish.
We Also Serve Cities Near Los Altos Hills
Mason Remodeling serves Los Altos Hills and the surrounding Bay Area communities, including Los Altos Hills, Los Angeles, San Diego, San Jose, and San Francisco. Our General Contractor team coordinates scheduling and dispatch from our San Francisco Bay Area office, so crews arrive on site knowing the local permitting route and hillside conditions before they unload.
Serving Los Altos Hills, CA - Our Local Coverage Area
We’re based in the Los Altos 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 Los Altos Hills
Yes, for most structural work. Los Altos Hills does not operate a typical city building department that issues full construction permits. Additions, load-bearing wall changes, and ADUs route through Santa Clara County planning and building review. A contractor who hasn’t worked this process will stall your job. We handle county plan checks, septic review, and the inspection calendar as part of the written scope.
We price the kitchen itself at $14,000 – $45,000, then add allowance lines for any plumbing re-route, well line extension, or drain field access the remodel touches. On older Los Altos Hills ranchers, a kitchen remodel that moves the sink often means extending supply lines from the well pressure tank and tying waste into the existing septic lateral. Those aren’t surprises if they’re in the quote. Call (803) 680-2547 and we’ll show you exactly where the money goes.
A draw schedule is a written payment calendar tied to completed milestones: permit issued, demo complete, rough-in passed, drywall hung, final inspection cleared. On a Los Altos Hills project, where county inspections gate every phase, the draw schedule protects you from paying for work that hasn’t been signed off. We write the draw schedule into the contract before we start, and the 365-Day Done Right Promise covers what happens after we finish.
No, and any contractor who says otherwise is setting you up for rework. Starting rough-in on an unapproved scope in Los Altos Hills means the county inspector will flag it, and you’ll be opening walls to fix work that was never authorized. We wait for the permit every time, even if that adds a few weeks to the calendar. A delayed start costs less than a failed inspection.
Three things: hidden structural damage discovered after demo, unforeseen well or septic conditions, and owner-requested upgrades to fixtures or finishes. We write named allowance lines for each of these in the original quote, so you’ve pre-approved the cost before work starts. The only change order on our Robleda Road project was a mid-job faucet upgrade. If a contractor can’t tell you what would change the price before demo, walk away. Call (803) 680-2547 for a written quote that maps the risk before the dust flies.
Plan on ten to sixteen weeks for a kitchen or bathroom remodel and four to nine months for an addition or ADU, once permits are issued. County plan check adds two to six weeks before you get a start date. We build that lead time into your project calendar up front, so you’re not left wondering why the crew hasn’t shown. Call (803) 680-2547 and we’ll give you a realistic schedule for your specific scope.
Written by Isaac Pruett, Owner at Mason Remodeling, serving Los Altos Hills since 2004.
