Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Before
After
Before
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Before
AfterConstruction in Los Altos, CA
Roofing and exterior construction in Los Altos runs into conditions you won’t find in flatland Santa Clara County: 1950s-1970s ranch homes with original wood shake or early composite roofs, heavier winter rainfall coming off the Santa Cruz Mountains, and hillside lots where drainage failures show up first in the roofline and foundation. We replace and repair roofs across Los Altos with crews who understand how the city’s ASRC permit process and heritage tree ordinance affect staging, access, and sequencing on every job. For a written price before any work starts, call us at (650) 560-7228.
Why Los Altos Homes Are Different
Los Altos sits at the base of the Santa Cruz Mountains, which means it catches more winter rainfall and hillside sheet-flow than neighbors like Mountain View or Sunnyvale. That extra water has to go somewhere, and on the city’s 8,000-15,000 sq ft lots, it often finds its way behind fascia boards, into compromised valleys, or against foundations that were never designed for the volume.
The housing stock is almost entirely single-story, wood-frame ranch homes built between 1950 and 1975. Because land value dwarfs structure value, contractors here spend as much time on full custom rebuilds and whole-home renovations as on routine repairs. The city’s Architectural and Site Review Commission reviews nearly every exterior alteration, and the heritage tree ordinance protects mature valley oaks and coast live oaks over roughly 10 inches DBH. A licensed arborist’s report and physical tree-protection fencing are mandatory before the building department issues any grading or foundation permit. Out-of-town contractors who miss this step routinely lose four to six weeks to permit delays.
Proximity to both the San Andreas and Hayward faults also means Santa Clara County’s prescriptive seismic requirements govern foundation design on every permitted project. These conditions don’t just add steps; they change how we stage materials, protect existing landscaping, and sequence roof and exterior work to keep the documented photo record complete for both the homeowner and the city inspector.
Our Main Los Altos Services
Los Altos homeowners call us most often for interior renovations and additions that respond to the same land-value math driving the tear-down-and-rebuild market: expanding rather than relocating on a $2-4M lot.
Kitchen Remodeling in Los Altos
Kitchen remodels in Los Altos typically involve opening up the original galley or U-shaped layout of a 1960s ranch to create sightlines across the main living space. We work with KraftMaid and Wellborn cabinet lines, specify Cambria or Caesarstone countertops, and coordinate the ASRC review when exterior windows or the roofline change. Every quote is a flat written price with a written scope. Kitchen Remodeling in Los Altos details our full process.
Bathroom Remodeling in Los Altos
Bathroom work here often means converting the original 5×8 hall bath into a walk-in shower or expanding a master bath into an underutilized adjacent bedroom. We document the condition of the original cast-iron drain lines, specify Kohler or Toto fixtures, and quote the full job in writing before any demolition begins. Bathroom Remodeling in Los Altos covers our approach.
Home Additions & ADU in Los Altos
Additions and ADUs in Los Altos face the full ASRC and heritage tree review process, plus Santa Clara County seismic requirements on any new foundation. We front-load the arborist report and tree-protection fencing into the permit submittal package to avoid the delays that catch out-of-town contractors. Home Additions & ADU in Los Altos explains how we manage the approval timeline.
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.
Before
AfterRoofing in Los Altos
Roofing in Los Altos means working on 50- to 70-year-old wood-frame ranch homes with original shake or early-generation composite roofs that have taken decades of mountain rainfall. The hillside lots and mature oak canopy make access and staging a planning exercise, not an afterthought: crane placement, debris chute routing, and tree-protection fencing all have to be resolved before the first shingle comes off. We handle Roofing across the Bay Area, and Los Altos jobs get the same documented photo record and written flat price we deliver on every project.
Roof Repair
Signs you need it
Water stains on the ceiling, granules collecting in gutters, or lifted shingles in the valley channels where mountain runoff concentrates.
What it costs in Los Altos
Roof repair in Los Altos typically runs $400-$1,800 depending on whether we’re replacing a few damaged shingles, resealing valley flashing, or addressing rot in the fascia from sustained moisture exposure.
How we do it
We photograph the full roof condition from the ridge, mark every repair point with a numbered flag, complete the work, and deliver the matched photo set with the invoice so the homeowner has evidence of what was found and what was fixed.
Roof Replacement & Installation
Signs you need it
Multiple leak points, visible sagging in the roof deck, or shingles past their rated lifespan with brittle edges that crack underfoot during inspection.
What it costs in Los Altos
Roof replacement in Los Altos typically costs $8,000-$20,000 for standard architectural shingles on a single-story ranch, with metal or tile systems running higher based on material and structural load requirements.
How we do it
We strip to the deck, photograph the substrate condition, replace any water-damaged sheathing, install synthetic underlayment and ice-and-water shield in valleys, then finish with GAF or Owens Corning shingles specified in the written scope.
What Roofing Costs in Los Altos
| Item | Typical range in Los Altos |
|---|---|
| Roof Repair | $400 - $1,800 |
| Roof Replacement | $8,000 - $20,000 |
| Metal Roof Installation | $15,000 - $40,000 |
How long does a roof replacement take in Los Altos?
A standard single-story ranch re-roof in Los Altos takes two to four days, assuming the ASRC permit is already issued and tree-protection fencing is in place; heritage tree compliance or crane restrictions on tight hillside lots can add a day or two for staging. Call (650) 560-7228 for a written timeline with your estimate.
Will you work around my oak trees during roofing?
Yes, and we plan for it: we coordinate with your arborist’s tree-protection plan, use ground-based debris removal where possible, and pad trunk zones before any ladder or boom placement; the documented photo record includes pre- and post-condition shots of every protected tree. Call (650) 560-7228 to schedule.
Windows & Doors in Los Altos
Windows and doors in Los Altos present a specific problem: original 1950s-1970s single-pane aluminum or early wood units with failing weatherstripping, installed in openings that were never designed for modern energy codes or seismic movement. The mountain climate means more thermal cycling than flatland neighbors, and the ASRC reviews any exterior alteration that changes the visible character of the facade. We install and replace Windows & Doors with products that meet current Santa Clara County energy requirements without triggering unnecessary design review.
Window Replacement
Signs you need it
Condensation between panes, drafts that shift with the afternoon wind off the hills, or original single-pane glass that rattles in the frame.
What it costs in Los Altos
Window replacement in Los Altos typically runs $4,500-$15,000 for a full-home update on a single-story ranch, depending on unit count, material, and whether any openings require structural modification for egress or seismic compliance.
How we do it
We measure every opening twice, photograph the existing trim and siding condition, install flashed and sealed units with proper sill pan drainage, and deliver the photo record showing the before condition, the rough opening, and the finished installation.
Impact Windows & Doors
Signs you need it
Hillside homes with wind exposure, large glass areas facing the Santa Cruz Mountains, or homeowners who want the security and noise reduction of laminated glass without aftermarket film.
What it costs in Los Altos
Impact window installation in Los Altos typically costs $8,000-$25,000 for a full replacement, with per-unit pricing that reflects the laminated glass, reinforced frames, and structural anchoring required for seismic zones.
How we do it
We specify units tested to ASTM impact standards, anchor through the frame into the structural stud with Simpson Strong-Tie or equivalent hardware, and document the fastening pattern in the photo record for permit inspection.
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 |
Do I need ASRC approval to replace windows in Los Altos?
Not if you’re matching the existing style, size, and material; changing from aluminum to wood, adding a new opening, or installing larger units triggers ASRC design review, which we flag during the initial measurement visit. Call (650) 560-7228 and we’ll review your specific openings.
Can you match my home’s original wood windows?
Yes, we work with manufacturers who replicate the divided-light patterns and sill profiles of 1950s-1970s ranch windows using modern insulated glass and clad exteriors; the quote includes a mockup photo for ASRC review if needed. Call (650) 560-7228 for a written price.
Fence Installation in Los Altos
Fence installation in Los Altos runs into constraints you won’t find in most Bay Area cities: the heritage tree ordinance protects mature oaks whose root zones extend well beyond the canopy, the ASRC reviews any fence over six feet or any material change on a corner lot, and the $2-4M lot values mean homeowners expect a finished product that complements a high-end landscape design. We install Fence Installation with post-setting methods that avoid critical root zones and a written scope that specifies every picket dimension and gate hardware detail.
Vinyl Fence
Signs you need it
A rotting wood perimeter fence that needs replacement without the maintenance cycle, or a pool enclosure that must meet Santa Clara County barrier code with a clean sightline.
What it costs in Los Altos
Vinyl fence installation in Los Altos typically costs $3,500-$9,000 for a standard backyard perimeter, with price moving based on height, rail count, and whether we need to navigate around protected oak roots with auger-restricted post placement.
How we do it
We locate the critical root zone from the arborist’s report, set posts with pneumatic drivers or hand-dug footings where required, install tongue-and-groove vinyl panels with aluminum reinforcement, and document the finished line with the photo record.
Aluminum Fence
Signs you need it
A wrought-iron look without the rust maintenance, or a pool fence that meets code with minimal visual weight on a landscaped hillside lot.
What it costs in Los Altos
Aluminum fence installation in Los Altos typically runs $4,000-$10,000, with ornamental styles at the higher end and standard three-rail residential at the lower; hillside grading and root-zone restrictions add labor for proper post alignment.
How we do it
We powder-coat all components before delivery, set posts in concrete footings cleared with the arborist’s root-zone map, rack the panels to follow grade changes, and deliver the photo record showing post depth and panel alignment.
What Fence Installation Costs in Los Altos
| Item | Typical range in Los Altos |
|---|---|
| Vinyl Fence Installation | $3,500 - $9,000 |
| Aluminum Fence Installation | $4,000 - $10,000 |
Can you install a fence near my protected oak trees?
Yes, but the arborist’s report governs: we adjust post spacing, use hand excavation within the critical root zone, and sometimes specify surface-mounted posts on concrete piers to avoid any root disturbance; the written scope includes these accommodations. Call (650) 560-7228 for a site-specific quote.
Does the ASRC review all fences in Los Altos?
Fences under six feet in standard materials on interior lots typically do not need ASRC review; corner lots, fences over six feet, and any masonry or stucco-faced wall trigger design review, which we identify and include in the permit timeline. Call (650) 560-7228 to confirm for your property.
Driveway & Pavers in Los Altos
Driveway and paver work in Los Altos has to solve a drainage problem first and an aesthetic problem second: the mountain rainfall and hillside sheet-flow that hit these lots will undermine any surface that doesn’t move water away from the foundation. Original 1950s-1970s concrete driveways are often cracked from root heave, seismic settlement, or simply decades of thermal cycling. We install Driveway & Pavers with French drain integration as a standard inclusion, not an upsell, because we’ve seen what happens when water finds its way under a new surface.
Paver Driveways
Signs you need it
A cracked concrete driveway with standing water after storms, or a homeowner who wants a surface that can be lifted and re-leveled if tree roots or seismic settlement shift the base.
What it costs in Los Altos
Paver driveway installation in Los Altos typically costs $7,000-$18,000, with Belgard and Techo-Bloc products in the mid-to-upper range; the quote includes excavation, class II base, geotextile, edge restraint, and the French drain tie-in for hillside drainage.
How we do it
We excavate to depth, install the drainage plane with perforated pipe daylighting to grade, compact the base in lifts, set pavers in the specified pattern with polymeric sand, and document every layer in the photo record before backfill.
Concrete Driveways & Concrete Work
Signs you need it
Spalling surface with exposed aggregate, cracks wide enough to catch a shovel blade, or a driveway that slopes toward the garage instead of away from it.
What it costs in Los Altos
Concrete driveway installation in Los Altos typically runs $4,500-$12,000 for a standard two-car replacement with proper slope correction and control joints; the written scope specifies the PSI mix, reinforcement, and finish.
How we do it
We saw-cut and remove the old slab, grade for positive drainage away from the foundation, place rebar or fiber mesh as specified, pour with control joints aligned to the driveway dimensions, and deliver the photo record showing the formed edge and finished broom or exposed-aggregate surface.
What Driveway & Pavers Costs in Los Altos
| Item | Typical range in Los Altos |
|---|---|
| Paver Driveway Installation | $7,000 - $18,000 |
| Concrete Driveway Installation | $4,500 - $12,000 |
| Asphalt Driveway Paving | $3,500 - $9,000 |
Do I need a permit to replace my driveway in Los Altos?
Yes, the building department requires a permit for any driveway replacement that changes the footprint, material, or drainage pattern; we pull the permit, include the arborist’s tree-protection clearance if roots are near the edge, and schedule the inspection. Call (650) 560-7228 and we’ll handle the paperwork.
Why do you include French drains with paver driveways?
Los Altos hillside lots collect sheet-flow from above that will saturate the base course and cause pavers to settle or heave; our standard scope includes a perimeter French drain or slot drain tied to daylight, which protects the investment and satisfies our 365-Day Done Right Promise. Call (650) 560-7228 for the written specification.
Brands We Service in Los Altos
We stock and source from fifty-plus vetted brands, with KraftMaid and Wellborn cabinets, Cambria countertops, and James Hardie siding among the lines most specified on Los Altos projects. Local distributor relationships keep standard lead times predictable, and the written quote names the exact SKU, not a generic description. 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 |
| Home Addition | $45,000 - $130,000 |
| ADU Construction | $90,000 - $220,000 |
| Roof Replacement | $8,000 - $20,000 |
| Roof Repair | $400 - $1,800 |
| Window Replacement | $4,500 - $15,000 |
| Impact Window Installation | $8,000 - $25,000 |
| Vinyl Fence Installation | $3,500 - $9,000 |
| Aluminum Fence Installation | $4,000 - $10,000 |
| Paver Driveway Installation | $7,000 - $18,000 |
| Concrete Driveway Installation | $4,500 - $12,000 |
Prices in Los Altos push toward the higher end when ASRC design review, heritage tree arborist reports, or seismic engineering are required; hillside access for material delivery and the tight lot lines common in the city’s older neighborhoods also add labor. Under Clause 1 of the Haven Standard, the price we write is the price you pay, with no change order processed until it is signed.
Neighborhoods We Serve in Los Altos
We work across Los Altos and Los Altos Hills, from the original ranch tracts near downtown to the estate properties in the foothills. Crews are dispatched from our San Francisco Bay Area office, with scheduling coordinated for Los Altos availability without crossing multiple job sites in a single day.
- South Los Altos
- Loyola Corners
- Los Altos Hills (unincorporated)
- North Los Altos
- Old Los Altos
Service Area - Cities Near Los Altos
Our crews serve the full Peninsula corridor, with Los Altos as a primary dispatch zone. We also work in Mountain View, CA, Palo Alto, CA, Menlo Park, CA, and Sunnyvale, CA, with the same written-price-first process 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
Any exterior alteration that changes the visible character of your home, including roof material changes, new window openings, fences over six feet, or additions, requires Architectural and Site Review Commission approval in Los Altos; we identify the requirement during our first site visit and include the timeline in your written estimate.
Los Altos protects valley oaks, coast live oaks, and other designated species over roughly 10 inches DBH; a city-approved arborist must inspect protected trees, write a report, and approve physical protection fencing before the building department issues grading or foundation permits, a step that adds four to six weeks if not started early.
Yes, our Free Second Opinion on Any Written Estimate is a standing offer: bring a competitor’s line-item quote and we will review it against current material pricing, scope completeness, and Los Altos-specific permit requirements at no charge; call (650) 560-7228 to schedule.
Ready for a written price before any work starts? Call (650) 560-7228 to schedule your free estimate. Every quote includes a flat price, written scope, and documented photo record as standard. Under the 365-Day Done Right Promise, if it is not done right, Rowan makes it right.
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
"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."Final invoice was within two percent of the contract. Every change was priced and signed before anyone picked up a tool."
- Malcolm T.