Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Mountain View
Hiring a general contractor in Mountain View usually means one of three jobs: a kitchen or bath remodel on a 1950s-1970s ranch, a room addition on a small R1 lot, or a detached ADU or workshop near the rear setback. Each one comes with Mountain View-specific permitting wrinkles that most contractors don’t mention until the inspector does. We do. This page lays out real price ranges, the county reviews that can add weeks if they’re missed, and exactly how we scope a project before you sign anything. Call (669) 274-2362 and you’ll get a real person, not a voicemail maze.
Why Penhallow Remodeling San Jose Is Mountain View’s Preferred General Contractor Company
Mountain View homeowners keep hiring us for the same reason: we put the price in writing before work starts. That means the number on day one is the number on the final invoice. No verbal ballpark that drifts upward after demo day. Trevor Nash, who leads our team, made that the standard because he saw too many Mountain View remodels go sideways when a contractor discovered the sewer lateral was shot or the well setback didn’t clear and suddenly the “firm quote” became a change order.
Our crews work Mountain View neighborhoods every week, from Old Mountain View to Waverly Park to the newer lots west of El Camino. We know which jobs trigger Santa Clara County reviews, which don’t, and how long each one actually takes. Every technician who walks your property is background-checked and wears a uniform. You’ll know exactly who’s at your door, and they’ll arrive in the window we gave you.
We carry the 365-Day Done Right Promise on every Mountain View project, in writing. If something we built fails inside a year, we return and fix it at no charge. That’s not a slogan. It’s printed on your contract, and a live person answers our phone 24/7 if you ever need to call it in.
We also operate under General Contractor standards set by the Kingswell family of companies, which have required written pricing, a defined arrival window, and a written guarantee since 2004. Each Penhallow location is independently owned and operated, and our San Francisco Bay Area office coordinates scheduling for Mountain View jobs. The crews are local, the standards are not optional.
Styles & brands we work with
Residential General Contractor in Mountain View
Residential General Contractor work in Mountain View means one of two things: remodeling what’s already on your lot, or adding something the lot was never designed to hold. The city is essentially built out, so nearly every project is a negotiation with small lots, tight setback rules, and a planning department that moves methodically. A kitchen remodel on a 1950s ranch typically runs $14,000 – $45,000 in Mountain View. A bathroom remodel runs $9,000 – $28,000. A full home addition runs $45,000 – $130,000, and the final number depends heavily on access, foundation scope, and whether county reviews come into play.
Permitting Reality on Mountain View Lots
Mountain View’s single-family lots are predominantly 5,000 – 8,000 square feet under R1 zoning. That’s the same everywhere in the city, but what changes project to project is whether your lot sits close enough to acreage-adjacent infrastructure that Santa Clara County gets involved. Many tech-buyer remodels add detached ADUs or workshops near the rear setback, and those additions can trigger county septic or sewer lateral reviews, plus well setback reviews, that city-only projects never see. A missed county review adds 3 – 6 weeks. We check this before we quote, not after we start digging.
Why Foundations Matter More Here
In the Old Mountain View neighborhood, many original 1950s homes sit on concrete slab foundations with underslab ducting that corrodes and collapses. That means a “simple” kitchen remodel can become a repiping job once we open the slab. We scope for this in Mountain View specifically, because we see it regularly. You don’t want to learn your ducting is shot two days into a three-month remodel.
Hire a General Contractor in Mountain View
Hire a General Contractor in Mountain View when the job is bigger than one trade and smaller than a ground-up build. Room additions, ADUs, garage conversions, and whole-home remodels all fit that description. What changes in Mountain View is the planning review and the physical access to your backyard. Long driveways on open lots often need gravel or crane time for material delivery, and that cost belongs in the quote, not in a change order after the first concrete truck gets stuck.
What We Scope Before We Quote
Every Mountain View estimate starts with a site visit that looks at access, grading, and setbacks. We measure the driveway. We check for overhead wires. We look at where the current sheet flow runs after a storm. Then we price the job with those realities included. A home addition on a lot with poor concrete truck access might need a pump truck, and that can add several thousand dollars. We tell you that before you sign.
Detached Shops, ADUs, and County Reviews
If you’re adding a detached shop or ADU near the rear of your Mountain View lot, the critical question is whether the structure exceeds 120 square feet. Over that threshold, you likely need a county permit, and if the lot has an existing septic system or water well, you’re going to need setback verification. We manage that review for you, including the field checks and inspection coordination. Trying to skip it doesn’t save time. It just moves the delay to the final inspection, when it’s far more expensive to fix.
Trusted Brands We Service in Mountain View
We install materials from brands that stand behind their products, because our 365-Day Done Right Promise works better when the product carries its own warranty too. On Mountain View decks and outdoor structures, we work with Ameristar and Jerith products, both of which hold up well in the Bay’s wind and fog cycles. For aluminum and vinyl fence work on larger lots, we use Bufftech and ActiveYards. We stock local replacement parts in our Bay Area warehouse so a warranty call doesn’t wait on a slow freight shipment. That matters when fog-season wind takes down a fence panel in February.
Common General Contractor Problems We See in Mountain View Homes
- Corroded underslab ducting on 1950s-1970s ranches. In Old Mountain View, Waverly Park, and surrounding neighborhoods, concrete slab foundations often hide ducting that has rusted or collapsed. We see it on nearly every slab-home remodel, and it changes the scope before you ever pick out a countertop.
- County reviews on acreage-adjacent lots. Homeowners assume a city of Mountain View permit covers everything on their property. It doesn’t. Lots with septic systems or water wells trigger county setback reviews that add 3 – 6 weeks if they’re not filed early, which is why we file them early.
- Material haul and equipment access on long driveways. An open lot with a 200-foot driveway sounds easy until a concrete truck can’t turn around. We build gravel pads and plan crane access before the first delivery, and we price it in the initial scope, not as a surprise line item.
- Drainage and grading failures on open lots. A new detached ADU or workshop changes how water moves across your parcel. If sheet flow gets redirected onto a neighbor’s property, you fail final inspection. We plan grading and drainage as part of the design, not as a punch-list fix.
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AfterPricing for General Contractor in Mountain View, CA
Here are real Mountain View market ranges for the larger projects we handle. These are written, fixed-price ranges. The number we give you before work starts is the number you pay, unless we find something we both agree is a change in scope, which we’ll discuss with you before any new line item appears.
| Project Type | Mountain View Price Range |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
What moves a Mountain View project toward the top of those ranges? Any lot that triggers a county review due to septic or well proximity. Poor truck access that requires a pump or crane. Foundation surprises on slab homes from the 1950s. The good news is we identify all of those before we quote, so the range we give you reflects reality, not a best-case fantasy. Call (669) 274-2362 for a free written estimate.
We Also Serve Cities Near Mountain View
Our crews handle projects across the South Bay and Peninsula. If you’re in Los Altos, Stanford, Cupertino, or Santa Clara, we bring the same written pricing and 365-Day Done Right Promise to your door. For more on what we do, see our General Contractor in Mountain View page for local project details and pricing breakdowns.
Serving Mountain View, CA - Our Local Coverage Area
We’re based in the Mountain View 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 Mountain View
Yes. In Mountain View, any detached accessory structure over 120 square feet requires a building permit, and if your lot has an existing septic system or water well, Santa Clara County will likely need to review setback compliance before the city signs off. We handle that filing and coordinate the inspection. Missing the county review doesn’t mean skipping it; it means finding it later as a failed final inspection. We start it during design, not after framing. Call (669) 274-2362 if you’re planning a shop or ADU and want to know which reviews apply to your specific lot.
We visit the lot first and measure the access path, then we price the addition including whatever delivery method it requires. That could be a pump truck, a gravel access pad, or staged deliveries with a smaller vehicle. Those costs go into your written quote up front, so the number on day one includes them. We don’t quote a driveway-friendly price and then hand you a $3,000 pump truck invoice later. An exact quote is free: (669) 274-2362.
Most Mountain View ADU projects follow a milestone draw schedule: an initial deposit at contract signing, then payments at foundation completion, framing and rough-in, drywall and finish, and a small retainage at final inspection. The dollar amounts and percentages are spelled out in your contract before you sign. We follow the Kingswell standard that every payment matches a completed, inspectable stage, and you always know what you owe and why. If you want a sample draw schedule for your specific ADU, call us and we’ll walk through it.
Yes, in most cases, but it requires a septic system evaluation and possibly a county setback review confirming the new structure stays clear of the drain field and any reserve area. We coordinate that evaluation early, because it can take a few weeks and it affects where the ADU can sit on the lot. If the septic system needs expansion or repair to support the added bedroom and bath count, that scope gets written into your quote before you commit. Call (669) 274-2362 to find out what applies to your parcel.
We design the workshop with grading and drainage as part of the plan, not as an afterthought. That means we calculate sheet flow patterns before we pour, make sure the finished pad doesn’t send water onto a neighbor’s parcel, and coordinate any required drainage improvements with the city and county as needed. A well-drained open lot isn’t automatically buildable as-is, and failing final inspection over drainage is one of the most common and most avoidable outcomes we see. We scope it properly. To have your lot evaluated, call (669) 274-2362.
Your General Contractor in Mountain View, Working to a Written Standard
We’re not the cheapest bid in Mountain View, and we don’t try to be. We’re the company that hands you a written price before work starts, a defined arrival window, and a 365-day promise that if something isn’t done right, we return and make it right. On a mid-century ranch in the Waverly Park area, our crew replaced a corroded underslab duct system after repiping under the existing concrete slab, then managed a county permit for a new detached shop that required a 50-foot well setback adjustment before inspection sign-off. That’s the kind of job that generic contractors lose months on. We don’t. Call (669) 274-2362 to schedule your free written estimate, and we’ll start by walking your Mountain View lot and telling you exactly what applies.
Written by Trevor Nash, Owner at Penhallow Remodeling San Jose, serving Mountain View under the Kingswell standard.
