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
If you’re planning a kitchen remodel, bathroom update, or room addition in Los Altos, you’re probably wondering what it costs, how long it takes, and who’s actually going to show up at your door. A general contractor in Los Altos typically charges $14,000 – $45,000 for a kitchen remodel, $9,000 – $28,000 for a bathroom remodel, and $45,000 – $130,000 for a home addition. Those ranges reflect the mid-century housing stock, the city’s strict plan review process, and the cost of pulling compliant permits. Mason Remodeling serves Los Altos homeowners with written pricing before work starts and a 365-Day Done Right Promise on every project. Call (803) 680-2547 for a free estimate.
Why Mason Remodeling Is Los Altos’s Preferred General Contractor Company
Los Altos homeowners keep calling us back for one reason: we tell them exactly who is coming and exactly what it costs before anything gets torn out. Every crew member is background-checked, identity-verified, and introduced to you by name and photo before arrival. That’s our General Contractor team under the Threshold Standard, and it matters when you’re letting someone into a home where kids do homework at the kitchen table or an older parent lives alone.
We’ve worked in North Los Altos, the Country Club area, and the streets around downtown, and we know the homes. Many were built in the 1950s and 60s, with load-bearing walls hidden behind paneling and electrical panels that weren’t sized for today’s appliances. Our crews walk those realities before we quote, so the price you get is the price that holds. Los Altos homeowners also tell us the same thing after every job: the written guarantee and the free second visit if something fails are what made them pick us. We put that in writing on every project, from a tub-to-shower conversion to a full ADU.
Founded in 2004 as part of the Threshold Group family of home-service companies, Mason Remodeling has spent two decades working in Bay Area homes like yours. A live person answers our phone around the clock, every day of the year. You won’t get a call tree, and you won’t wait until Monday.
Styles & brands we work with
Residential General Contractor in Los Altos
A Residential General Contractor handles the full scope of a home project in Los Altos: structural work, permits, subcontractors, inspections, and the final walkthrough. You need one when a project touches framing, plumbing, electrical, or anything that requires a City of Los Altos building permit. A kitchen remodel in Los Altos runs $14,000 – $45,000, while a bathroom remodel runs $9,000 – $28,000. Those ranges include labor, materials, rough and finish work, and the time it takes to get inspections scheduled and passed.
Kitchen and Bath Remodels
Most Los Altos kitchen remodels start with a structural question: is that wall load-bearing? In mid-century ranch homes, the answer is often yes, and that changes the scope. We handle the beam sizing, the engineer’s letter, and the reframing without drama. Bathroom remodels in Los Altos typically run $9,000 – $28,000, with walk-in shower installations at $4,500 – $12,000.
Additions and ADUs
When a growing family needs more room, a home addition in Los Altos runs $45,000 – $130,000. ADU construction, which is common here given lot sizes and rental demand, runs $90,000 – $220,000. Both require plans that pass the Los Altos Building Division’s plan review, and we submit them complete the first time to keep your calendar on track.
Hire a General Contractor in Los Altos
To hire a General Contractor in Los Altos, start by asking for a written scope of work, a line-item price, and a schedule. That’s what we deliver before any work begins, every time. A garage conversion in Los Altos runs $30,000 – $80,000, and a room addition runs $45,000 – $130,000. The written price you receive is not an estimate that drifts upward; it’s the number on the final invoice unless you change the scope.
What the Scope Should Include
Your scope of work should name every fixture, every material line, and every subcontractor trade. It should also state who pulls permits and who schedules inspections. For Los Altos, that means the City of Los Altos Building Division, and we handle those filings directly.
What to Ask Before You Sign
Ask whether the price is written and fixed. Ask who shows up on day one and whether you’ll know their name and face beforehand. Ask what the guarantee covers and for how long. We answer all three in writing before your first dollar is spent.
Trusted Brands We Service in Los Altos
Los Altos homeowners often ask us which brands we recommend and which we service. We work with KraftMaid and Wellborn cabinetry, Cambria and Silestone countertops, Kohler and Toto fixtures, and GAF roofing products, among others. Because we stock common materials and hardware through our supplier network, we can typically source what a Los Altos job needs without the multi-week waits that plague some Bay Area projects. When a homeowner wants Dvele or Cover panelized systems for a modern ADU, we coordinate that too. The point is this: you get specification-grade products, and we handle the ordering so the calendar holds.
See the difference
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AfterCommon General Contractor Problems We See in Los Altos Homes
- Load-bearing walls hiding in plain sight. Los Altos has a high concentration of mid-century ranch-style homes with open-beam ceilings and older electrical panels. Removing a wall without a structural check can mean a costly engineering letter and reframing mid-project.
- Undersized electrical panels. Many 1950s and 60s homes here were built with 100-amp panels. Adding a modern kitchen with new appliances can push past capacity and stall inspection sign-offs until a panel upgrade is done.
- Plan review delays. The City of Los Altos Building Division runs a rigorous plan review, and incomplete permit submissions add weeks. We submit full documentation the first time so your calendar doesn’t slip.
- Scope creep from vague quotes. A verbal estimate that doesn’t name fixtures or materials will grow on the final bill. Our written price covers the full scope, and if you change the scope, we price the change before we do the work.
Pricing for General Contractor in Los Altos, CA
Here’s what Los Altos homeowners can expect to pay for common projects, based on current market rates and the city’s permit and inspection requirements.
| Project | Los Altos Price 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 |
| Garage Conversion | $30,000 – $80,000 |
What moves the price: structural work like removing load-bearing walls, panel upgrades for mid-century electrical systems, and the level of finish. Cabinet installation alone runs $4,000 – $13,000, and countertop installation runs $2,000 – $6,500. We give you a written line-item quote before any work starts, and that’s the number you pay unless you change the scope. Call (803) 680-2547 for a free estimate.
We Also Serve Cities Near Los Altos
Our General Contractor in Los Altos team works throughout the south Peninsula. We serve homeowners in Mountain View, Stanford, Palo Alto, and Menlo Park as well. If you live in a neighboring city and are planning a remodel or addition, the same written pricing and crew verification apply.
Serving Los Altos, CA - Our Local Coverage Area
We’re based in the Los Altos 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
Yes, most kitchen remodels in Los Altos require a permit from the City of Los Altos Building Division, especially when you move plumbing, electrical, or walls. The plan review process here is strict, and incomplete applications add weeks. We handle the permit filing, the schedule, and the inspections so your project passes the first time. Call (803) 680-2547 and we’ll tell you exactly what your specific project requires.
A typical bathroom remodel in Los Altos takes 3 to 6 weeks from demo to final inspection, assuming no structural changes. If you’re moving a wall or converting a tub to a shower, plan on the longer end because the city’s inspection schedule is part of the calendar. We’ll give you a written schedule with your written price. Call (803) 680-2547 for a project-specific timeline.
A scope of work should include every fixture, material line, subcontractor trade, permit, and inspection, plus a fixed price and a start-to-finish schedule. In Los Altos, it should also name who verifies load-bearing walls and panel capacity before demo starts. That’s what our written quotes include, on every project, from a small bath to a full ADU. Call (803) 680-2547 for a free written estimate.
Yes, we remove load-bearing walls in Los Altos ranch homes regularly, and we do it by first confirming the wall’s structural role, then bringing in an engineer’s letter and installing a properly sized beam. The North Los Altos kitchen we recently completed off University Avenue needed exactly that. We reframed the opening and the inspection passed the first time. Call (803) 680-2547 to schedule a structural assessment.
ADU construction in Los Altos typically runs $90,000 – $220,000, depending on the size, the foundation work, and whether you choose a site-built or panelized system from brands like Dvele or Cover. Los Altos lot shapes and setback rules drive part of that cost. We’ll give you a written line-item price before any work starts. Call (803) 680-2547 for a free estimate.
Written by Isaac Pruett, Owner at Mason Remodeling, serving Los Altos since 2004.
