A siding replacement in Los Altos is usually as much an architecture decision as a maintenance one. The city's homes tend to be worth caring about — mid-century ranches, flat-roofed Eichler-era houses, and a growing number of high-end custom rebuilds — and the cladding is a large part of what makes each of them read the way it does. Bay Area Siding Company is a Larkspur-based siding and window contractor working throughout the Peninsula and South Bay, and on a Los Altos project our job is to renew the exterior without flattening the character that makes the house yours.

Talk it through before anything comes off the wall. Request an estimate or call (415) 619-5167.

Getting the look right on a Los Altos home

Cladding choices that pass on a generic tract house can look wrong on a considered one. A low-slung ranch reads best with a clean horizontal line and restrained trim; an Eichler's flat planes want a profile that stays quiet rather than competing with the glass and post-and-beam; a custom home may be chasing a very specific board width, reveal, or finish. So before we talk products, we talk about what the home is trying to be — because on these houses, the wrong panel width or an overbuilt corner detail is the difference between a re-side that disappears into the design and one that fights it.

That fit conversation runs alongside the practical one: which material will hold that look with the least upkeep, given a lot of Los Altos is shaded by a mature tree canopy and the north and east faces of many homes stay damp and slow to dry.

What replacement actually involves — and why cover-overs hide the point

Re-siding means taking the old cladding off, not burying it. Once the existing siding is removed to the sheathing and substrate, we can actually see the things that decide whether a wall stays sound: the condition of the sheathing, any concealed rot at window sills and wall bases, and whether there is a functioning water-resistive barrier (WRB) and correct flashing behind the cladding. On homes from the ranch and Eichler eras, that barrier-and-flashing layer is often thin, improvised, or absent by today's standards — and it is the part that keeps water out, more than the boards themselves. Layering new siding over failing material skips that inspection, adds weight, and can trap moisture against the wall. A tear-off costs more up front and is the only way to correct what is behind the cladding rather than seal it in.

Choosing a material

We install several systems and can walk the trade-offs in person against your home's style and exposure:

• James Hardie fiber cement — dimensionally stable, low-maintenance, and available in profiles that suit both ranch horizontals and cleaner modern lines; see the Los Altos James Hardie page for the product detail.
• Fiber cement generally — the broader category across manufacturers.
• LP SmartSide — engineered wood, when a real wood grain matters.
• Wood siding — authentic, higher-maintenance, sometimes the only right answer on a period-correct restoration.
• Vinyl siding — a lower-maintenance option where it genuinely fits.

We also work with CertainTeed and aluminum. The point isn't the longest menu; it's matching the material to how your house looks and how much sun and shade its walls actually get.

Los Altos specifics: trees, permits, and staging

Two local realities shape most jobs here.

The tree canopy. Los Altos protects its urban forest — the city's Tree Protection Ordinance (Los Altos Municipal Code Chapter 11.08) requires a permit through the Planning Division before a protected tree is removed, and homeowners here tend to value mature trees regardless of the rule. For a re-side that usually means working carefully around canopies and root zones rather than clearing them: planning access, staging, and scaffolding so the crew can reach the walls without damaging trees you want to keep. Tell us early which trees matter; it shapes how we set up.

Permitting. Exterior siding work is a permitted project, submitted to the City of Los Altos Building Division; plan review can include a Title 24 energy component and other supplemental documents depending on scope. Unlike the foothill communities to the west, most of Los Altos sits on the flat valley floor and is not within a mapped high fire-hazard severity zone, so noncombustible-cladding rules are generally not the driver here the way they are up in the hills — but designation is parcel-specific, so we confirm your address rather than assume.

What drives the cost

No prices online, because no two of these homes are the same. The honest drivers are the size and complexity of the exterior, how much concealed rot or substrate repair turns up once the old siding is off, the material and finish you choose, the amount of custom trim and detailing the design calls for, single- versus two-story access, and any careful staging needed around protected trees. We give you a real number after we measure and look at the walls.

FAQ

Do I need a permit to re-side a house in Los Altos? Yes. Siding work is submitted to the City of Los Altos Building Division as a building permit, and plan review may include a Title 24 energy form and other supporting documents depending on the scope. We handle the submittal.

Will replacing my siding put my protected trees at risk? It shouldn't, if the job is planned around them. Los Altos protects trees under Municipal Code Chapter 11.08, and we scope access, staging, and scaffolding to reach the walls without disturbing the canopy or root zones of trees you're keeping.

Can you keep the exact look of my Eichler or ranch home? That's the goal. We select profile, reveal, and trim to hold the home's original line rather than impose a generic panel — and we'll tell you honestly when a particular material would compromise the look.

Do I have to tear off the old siding, or can you go over it? For older Los Altos homes we recommend full tear-off. Removing the cladding to the sheathing is the only way to inspect and correct the water-resistive barrier, flashing, and any hidden rot — going over the top seals those problems in.

Move your Los Altos re-side forward

Call (415) 619-5167 or request an estimate. We'll look at the walls, talk through materials and how they'll sit on your home, and lay out the process. See finished work in our project gallery, explore the wider South Bay service area, and if windows are on the list too, see Los Altos window replacement.