Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Before
After
Before
After
Before
AfterConstruction in Los Altos, CA
Kitchen remodeling in Los Altos runs $14,000 to $45,000 for a full job, and most projects on the 1950s-through-1970s ranch homes here uncover the same three things: unbraced cripple-wall foundations, 100-amp panels, and galvanized supply plumbing that should have been replaced a decade ago. This page gives you the price ranges, the local conditions that change those numbers, and what to expect when the crew shows up. Reach us at (470) 298-9650 to get a written price before anyone picks up a tool.
Why Los Altos Homes Are Different
Los Altos sits at the base of the Santa Cruz Mountains foothills, and it receives meaningfully more winter rainfall than bayside cities like Sunnyvale. That compresses the window for exterior work: roofing, stucco repair, window flashing, and any open-foundation work between November and March becomes a scheduling problem, not a convenience problem. The soil adds another layer. The valley’s expansive Vertisol clay shifts through wet and dry cycles, and that movement is hard on slabs, perimeter foundations, and any patio or walkway poured without proper base compaction.
The housing stock itself defines most of the work we bid. The city is overwhelmingly single-family residential, built out in the 1950s through 1970s as low-slung ranch homes on lots of 8,000 to 15,000 square feet. Original construction on those homes typically includes cripple-wall perimeter foundations without modern seismic bracing, 100-amp electrical panels, and galvanized supply plumbing. None of that is cosmetic. When we open a wall for a kitchen or bath remodel, we document what we find and put the fix in a written change order before any work proceeds. The median home price here is above $3 million, which means the land is often worth more than the structure on it. That is why Los Altos has become a teardown-and-rebuild market, with contractors routinely demolishing 1,200 to 1,800 square foot ranch homes and replacing them with 4,000 to 6,000 square foot builds. Virtually every one of those projects goes through the City of Los Altos Architectural Review process and its Residential Design Guidelines, a formal design-approval layer that neighboring Sunnyvale and Mountain View largely do not impose on single-family residential work.
One more local reality: mature valley oaks and coast live oaks are abundant on residential lots and protected under the Los Altos tree ordinance. Most teardowns, additions, and even some driveway replacements trigger a mandatory certified-arborist tree-protection plan before building permits are issued. That routinely adds three to six weeks to project timelines. We factor it into the schedule on the front end, so the written price you see reflects the real timeline, not an optimistic one.
Our Main Los Altos Services
Two services generate the most phone calls from Los Altos homeowners: fence installation and driveway and pavers work. Both are exterior projects affected by the clay soil, the winter rain window, and the city’s protected trees.
Fence Installation in Los Altos
Fence work in Los Altos is rarely a simple post-and-panel job. The expansive clay soil heaves posts over time, so we set them with proper depth and drainage consideration rather than just sinking them in concrete and hoping. Many properties border mature oaks, which means the fence line may need to avoid root zones or accommodate a tree-protection plan. We work with wood, vinyl, and aluminum, and every quote includes a written scope, a written warranty, and a documented photo record when the crew leaves. Fence Installation in Los Altos
Driveway & Pavers in Los Altos
Driveways in Los Altos sit on that same shifting clay, and a cracked slab is usually the soil flexing, not just age. Paver driveways handle the movement better than monolithic concrete because the joints flex, but the base preparation has to be right or the surface will dip in two seasons. We install paver, concrete, and asphalt driveways, plus patio pavers, and we document the base layer before covering it. That photo record is part of every job, not an add-on. Driveway & Pavers in Los Altos
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.
BeforeAfterKitchen Remodeling in Los Altos
Kitchen remodeling in Los Altos typically runs $14,000 to $45,000, and the number swings on what the walls reveal when we open them: galvanized supply lines, undersized wiring, or foundation issues tied to the city’s expansive Vertisol clay. On a 1950s ranch home, budgeting for the surface work without budgeting for what is behind the drywall is how projects blow past their agreed price. That is why every Kitchen Remodeling quote we write starts with a documented inspection of the existing conditions, and why no change proceeds unless you sign a change order first.
Full Kitchen Remodeling
Signs you need it
You are reconfiguring the layout, replacing every surface, or the original 1960s plumbing and wiring no longer support a modern kitchen.
What it costs in Los Altos
Full kitchen remodeling in Los Altos runs $14,000 to $45,000, with the upper end reflecting custom cabinetry, structural changes, and upgraded electrical service.
How we do it
We inspect the existing structure, document what we find, deliver a written flat price and scope, then execute in phases with signed change orders for anything uncovered.
Cabinets & Countertops
Signs you need it
Cabinet boxes are delaminating, doors are misaligned, or the countertop is cracked, stained, or failing at the seams.
What it costs in Los Altos
Cabinet installation in Los Altos runs $4,000 to $13,000, and countertop installation runs $2,000 to $6,500 depending on material and linear footage.
How we do it
We measure, specify cabinet brands like KraftMaid or Wellborn and countertop materials like Cambria or Caesarstone, then install with leveling and scribing done on site.
What Kitchen Remodeling Costs in Los Altos
| Item | Typical range in Los Altos |
|---|---|
| Small Kitchen Remodel | $9,000 - $20,000 |
| Backsplash Installation | $800 - $2,500 |
| Kitchen Island Installation | $3,000 - $10,000 |
How long does a kitchen remodel take in Los Altos?
A full kitchen remodel in Los Altos takes 6 to 12 weeks, with the range driven by permit review times, material lead times, and what the walls reveal once opened. Call (470) 298-9650 for a written estimate with a real schedule.
Will the price change once work starts on my Los Altos kitchen?
Only if you approve a signed change order. If we open a wall and find galvanized plumbing or undersized wiring, we document it, show you the photo, and get your signature before any additional work proceeds.
Bathroom Remodeling in Los Altos
Bathroom remodeling in Los Altos runs $9,000 to $28,000, and the single biggest cost driver on older homes is what sits behind the tile: original cast iron drain lines, questionable subfloor from decades of moisture, and plumbing that predates modern codes. The city’s ranch-era homes also tend to have small, tightly framed bathrooms, so layout changes often mean structural work. Bathroom Remodeling quotes here start with an inspection of the existing conditions, and the written price reflects what we can see, with a signed change order required for anything we cannot until demo.
Walk-In Showers & Shower Remodeling
Signs you need it
The shower pan is leaking, tile is cracking or delaminating, or the existing enclosure is a cramped 1960s tub-shower combo that no longer works.
What it costs in Los Altos
Walk-in shower installation in Los Altos runs $4,500 to $12,000, and shower replacement runs $3,000 to $8,500 depending on waterproofing method and finish materials.
How we do it
We demo to the studs, install a proper waterproofing membrane rather than relying on tile and grout alone, and document the membrane before any tile goes up.
Tub-to-Shower Conversion
Signs you need it
The tub is rarely used, access is difficult, or the existing tub surround has failed and you would rather have a walk-in shower than repair what is there.
What it costs in Los Altos
Tub-to-shower conversion in Los Altos runs $3,500 to $10,000, with the range set by drain relocation, valve replacement, and finish choices.
How we do it
We remove the tub, relocate the drain if needed, reframe and waterproof the new shower footprint, and install the valve, wall board, and finish materials to a written spec.
What Bathroom Remodeling Costs in Los Altos
| Item | Typical range in Los Altos |
|---|---|
| Small Bathroom Remodel | $5,000 - $12,000 |
| Walk-In Shower Installation | $4,500 - $12,000 |
| Bathroom Vanity Installation | $800 - $3,000 |
Does a Los Altos bathroom remodel require a permit?
Most bathroom remodels in Los Altos do require a permit if plumbing is being relocated or waterproofing is being replaced, and the city reviews the plans before work begins. We pull permits and document inspections as standard practice.
What drives bathroom remodel costs up in Los Altos?
Deteriorated subfloor, galvanized supply lines, cast iron drains, and structural changes to small ranch-era bathroom footprints are common cost drivers in Los Altos. Call (470) 298-9650 for a written quote that accounts for them.
Roofing in Los Altos
Roof replacement in Los Altos runs $8,000 to $20,000, and the city’s extra winter rainfall means roof failures here are wetter and more aggressive than in bayside cities. Most original ranch homes carry two or three layers of composition shingle over skip sheathing, and the extra weight combined with foot traffic has caused more than one sheathing failure we have had to document and repair. Roofing inspections in Los Altos start with a layer count and a sheathing condition report, because the written price has to account for what is under the shingles, not just the shingles themselves.
Roof Repair
Signs you need it
You see water stains on ceilings, granules in gutters, lifted shingles, or daylight coming through the attic.
What it costs in Los Altos
Roof repair in Los Altos runs $400 to $1,800, with the range set by the size of the repair, the number of layers, and whether sheathing is compromised.
How we do it
We inspect from the attic side as well as the roof side, identify the failure, document it with photos, then repair the flashing, underlayment, or shingles to the written scope.
Roof Replacement & Installation
Signs you need it
The roof is over 20 years old, shingles are curling or missing, or a repair would patch active leaks without fixing the underlying deck.
What it costs in Los Altos
Roof replacement in Los Altos runs $8,000 to $20,000, with metal roof installation running $15,000 to $40,000 depending on panel profile and standing seam versus exposed fastener.
How we do it
We tear off to the sheathing, repair or replace damaged decking with a signed change order if the rot is beyond the original scope, install new underlayment and flashing, then lay the specified roofing system.
What Roofing Costs in Los Altos
| Item | Typical range in Los Altos |
|---|---|
| Roof Repair | $400 - $1,800 |
| Roof Replacement | $8,000 - $20,000 |
| Tile Roof Repair | $600 - $2,500 |
How many layers of shingles are on most Los Altos roofs?
Many original Los Altos ranch homes carry two or three layers of composition shingle, which adds weight and shortens the life of the sheathing. We document the layer count and include tear-off in the written price.
Does the extra Los Altos winter rain affect roof work scheduling?
Yes. The foothill rainfall pattern compresses the reliable window for exterior roofing work, so we schedule tear-offs around forecast windows and tarp exposed areas the same day. Call (470) 298-9650 for a written estimate with a real weather-aware schedule.
Windows & Doors in Los Altos
Window replacement in Los Altos runs $4,500 to $15,000, and impact window installation runs $8,000 to $25,000 for homes in the more exposed foothill pockets. The original windows on most Los Altos ranch homes are single-pane aluminum frames with no thermal break, so they leak conditioned air and fog with condensation in the winter rain season. Windows & Doors replacement here usually includes reframing the rough opening, because original openings were framed for 1950s window dimensions that do not match modern units.
Window Installation
Signs you need it
Frames are pitted or corroded, sashes stick, condensation builds between panes, or rooms are drafty in winter.
What it costs in Los Altos
Window installation in Los Altos runs $4,500 to $15,000 for whole-home replacement, with the range set by window count, material, and whether new construction or retrofit frames are needed.
How we do it
We measure the existing openings, order units sized to the rough opening or specify new construction windows if the frames are too far gone, then install with the flashing and air sealing documented in photos.
Door Installation
Signs you need it
The door is warped, the threshold leaks, or the original 1960s slab door cannot be retrofitted with modern weatherstripping.
What it costs in Los Altos
Door installation in Los Altos typically runs $4,500 to $15,000 for a full replacement package, with the range set by door type, glazing, and whether the rough opening needs reframing.
How we do it
We remove the old door and frame, inspect the rough opening for rot or settlement, reframe if needed under a signed change order, then install the new pre-hung unit with shims and flashing.
What Windows & Doors Costs in Los Altos
| Item | Typical range in Los Altos |
|---|---|
| Window Replacement | $4,500 - $15,000 |
| Impact Window Installation | $8,000 - $25,000 |
| Window Installation | $4,500 - $15,000 |
Are impact windows worth it in Los Altos?
For hillside and foothill-exposed homes that catch winter wind and rain, impact-rated windows reduce air and water intrusion and add structural rigidity. Many Los Altos homeowners pair impact windows with roof replacement for a tighter envelope.
Do I need a permit to replace windows in Los Altos?
Window replacement in Los Altos typically requires a permit when the rough opening changes or structural framing is altered. We pull permits, document inspections, and include the cost in the written quote.
Home Additions & ADU in Los Altos
Home additions in Los Altos run $45,000 to $130,000, and ADU construction runs $90,000 to $220,000, with the range driven by foundation engineering on the city’s expansive clay and by the Architectural Review process that most single-family projects must pass. The teardown-and-rebuild market means many Los Altos homeowners consider a large addition or an ADU instead of selling, because the land value supports the investment and the design review layer means the project will look coherent with the neighborhood. Home Additions & ADU projects here begin with a documented site evaluation and a written plan for the permit path.
ADU Design & Permitting
Signs you need it
You want a rental unit, a family suite, or long-term flexibility, and the lot is large enough to support a detached or attached unit.
What it costs in Los Altos
ADU construction in Los Altos runs $90,000 to $220,000, with design and permitting as a distinct first phase we quote separately as a written flat price.
How we do it
We survey the lot, document existing utilities and tree locations, prepare plans that account for the tree-protection ordinance and clay soil engineering, and manage the Architectural Review process.
Garage Conversion ADU
Signs you need it
The garage is unused for parking, the structure is sound, and you want a lower-cost ADU than a new detached build.
What it costs in Los Altos
Garage conversion in Los Altos runs $30,000 to $80,000, with the range set by the condition of the slab, the electrical service, and whether the existing structure needs seismic bracing.
How we do it
We evaluate the existing slab and framing, reinforce what is needed under a signed change order, then convert the space to living quarters with a documented photo record at every phase.
What Home Additions & ADU Costs in Los Altos
| Item | Typical range in Los Altos |
|---|---|
| Home Addition | $45,000 - $130,000 |
| ADU Construction | $90,000 - $220,000 |
| Garage Conversion | $30,000 - $80,000 |
How long does an ADU take in Los Altos?
Plan on 6 to 14 months for an ADU in Los Altos, with the range driven by Architectural Review, the tree-protection plan if oaks are present, and the engineering required for clay soil. We include the schedule in the written quote.
Does the Los Altos tree ordinance affect ADU projects?
Yes. Any protected valley oak or coast live oak near the build site requires a certified-arborist tree-protection plan before permits are issued, typically adding three to six weeks to the front end. We manage that process for you.
Brands We Service in Los Altos
We source materials across fifty-plus vetted brands, including Cambria and Caesarstone for countertops, Kohler and Toto for fixtures, and Belgard and Techo-Bloc for pavers. For Los Altos homeowners considering prefabricated ADU systems, we are familiar with Abodu and Mighty Buildings panels. See our brands for the full list.
Pricing for Construction in Los Altos, CA
| Service | Typical range in Los Altos |
|---|---|
| Kitchen Remodel | $14,000 - $45,000 |
| Bathroom Remodel | $9,000 - $28,000 |
| Roof Replacement | $8,000 - $20,000 |
| Window Replacement | $4,500 - $15,000 |
| Home Addition | $45,000 - $130,000 |
| ADU Construction | $90,000 - $220,000 |
| Paver Driveway Installation | $7,000 - $18,000 |
| Vinyl Fence Installation | $3,500 - $9,000 |
What pushes prices up in Los Altos more than anything is what the walls and soil reveal: galvanized plumbing, unbraced cripple walls, undersized electrical panels, and tree-protection requirements on protected oaks. Under Clause 1 of the Haven Standard, every one of these jobs gets a written flat price before any work starts, and no change proceeds without a signed change order.
Neighborhoods We Serve in Los Altos
We work across Los Altos, and the neighborhoods below represent the range of housing stock we see. Crews dispatch from the San Francisco Bay Area office and coordinate with the Los Altos permit counter directly.
- North Los Altos
- South Los Altos
- Los Altos Hills area
- The Country Club area
- The Woodland Acres area
Response time across the city is typically one to three business days for the initial site visit and written estimate.
Service Area - Cities Near Los Altos
Rows of ranch-era homes and clay soil conditions continue into Mountain View, CA, Palo Alto, CA, Menlo Park, CA, and Sunnyvale, CA. We serve all of these cities with the same written-price discipline and documented photo record on every visit.
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 Construction in Los Altos
We typically schedule the initial site visit and written estimate within one to three business days across Los Altos. The estimate is a flat written price with a written scope and warranty, not a verbal range. Call (470) 298-9650 to schedule yours.
Most large additions, ADUs, and teardown-and-rebuild projects in Los Altos go through the city’s Architectural Review process and Residential Design Guidelines. We handle that submittal and the tree-protection plan if protected oaks are present on the lot.
Only if a signed change order is approved. If we open a wall or a roof deck and find conditions we could not see before demo, we document them with photos and get your signature before any additional work proceeds. Call (470) 298-9650 for a free estimate.
What happens when you call
- 1A real person answersNo phone trees - talk to a local construction 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 Los Altos Customers Say
"Final invoice was within two percent of the contract. Every change was priced and signed before anyone picked up a tool."
- Malcolm T."Fence and retaining wall along a sloped boundary. They photographed the footing depth at each post, which mattered when the county inspector came."
- Iona F."Talked us out of the larger scope we came in asking for, because it would not have added the value we thought."
- Emil R.