Sunnyvale Siding & Windows Replacement

Most Sunnyvale re-sides start the same way: a homeowner is looking at another repaint on tired wood, hardboard, or T1-11 that no longer holds a coat, and the math on "paint it again" has stopped making sense. Bay Area Siding Company is a Larkspur (Marin) siding and window contractor working throughout the South Bay, and we take the whole job off your plate — pulling the old cladding, checking what's behind it, correcting the weather barrier and flashing, and installing the new siding to the manufacturer's spec.

Want to talk it through? Request an estimate or call (415) 619-5167.

When a re-side beats one more repaint

Sunnyvale's residential stock leans heavily on 1950s–1970s tract housing — ranch homes, plus the city's large run of mid-century-modern and Eichler tracts. A lot of that original cladding has now been painted many times over, and there's a point where the substrate, not the paint, is the problem. Signs it's time to re-side rather than patch:

• Coatings that peel or check within a season or two of a careful repaint
• Vertical grooved plywood or hardboard that's delaminating, swelling at the bottom edge, or soft to a screwdriver
• Splitting, cupping, or open joints that let water sit behind the board
• Nail-pops, blistering, and chalky, faded surfaces that no longer take primer
• Interior clues — musty closets on an exterior wall, staining below a window

One or two of these can be a repair. When they show up across whole elevations, replacing the cladding usually costs less over the next decade than chasing failures a wall at a time.

Picking the material

We install several systems and walk you through the trade-offs against your home's style, exposure, and how long you plan to stay:

• James Hardie fiber cement — durable, low-upkeep fiber cement; see the Sunnyvale James Hardie page for how it fits mid-century homes
• Fiber cement generally — the broader category across manufacturers
• LP SmartSide — engineered wood that takes a nailable, wood-like profile
• Vinyl siding — a lower-maintenance option where the look and budget line up

We also work with CertainTeed, real wood, and aluminum. On Sunnyvale's flat mid-century and ranch homes, the material conversation is mostly about keeping clean lines and ending the repaint cycle — not about fire code, which is a bigger factor up in the county's foothill parcels than in the valley flats.

What tear-off actually shows you

Layering new siding over failing material is tempting because it looks cheaper, but it seals the real questions inside the wall. Taking the old cladding off is the only way to see what you're actually buying:

• The sheathing / substrate gets inspected for rot, delamination, and old water damage — commonly found low on the wall and around window and door openings.
• The water-resistive barrier (WRB) can be replaced or added; a lot of homes from this era were built before continuous WRB and modern flashing were standard.
• Flashing at windows, doors, penetrations, and material transitions gets detailed correctly so the new wall sheds water instead of trapping it.

To be clear about scope: a normal re-side removes the cladding down to the sheathing and building paper — it does not open up the framing. If the sheathing itself turns out to be compromised, that's a larger, separate repair we'd flag and price before proceeding.

Sunnyvale specifics worth knowing

Permitting. Exterior alterations like a full re-side are handled through the City of Sunnyvale's One-Stop Permit Center (Building Division, at City Hall on W. Olive Ave). Whether your specific scope is over-the-counter or needs plan review depends on the work, so we confirm the requirement with the City rather than guessing, and we handle the submittal.

Flat valley, not a fire zone. Sunnyvale's neighborhoods sit on the level Santa Clara Valley floor, well away from the mapped Very High Fire Hazard Severity Zones that shape material choice in the county's hillside communities. That means noncombustible cladding is a preference-and-durability decision here, not a Chapter 7A mandate — though we always confirm a parcel's designation before speccing.

Mid-century character. If your home is an Eichler or one of its ranch-tract neighbors, the goal is usually to keep the low, horizontal, clean-lined look rather than fight it — which affects profile, orientation (vertical panel vs. lap), and how the wide eaves and fascia are detailed.

What drives the cost

No two Sunnyvale jobs price the same. The real drivers are square footage and number of stories, the material and profile you choose, how much substrate repair turns up at tear-off, the amount of trim and eave/fascia detailing on the design, and access around the lot. We give you a number after we measure and see the walls — not before.

FAQ

Do I need a permit to re-side my house in Sunnyvale? Exterior siding replacement is handled through the City of Sunnyvale's One-Stop Permit Center. Whether your scope is a quick over-the-counter permit or needs review depends on the specifics, which we confirm with the Building Division and take care of for you.

My house is an Eichler — can it be re-sided without ruining the look? Yes, with the right choices. Fiber cement and engineered-wood products come in smooth and vertical-panel profiles that hold the clean mid-century line, and the eave, fascia, and glass-wall transitions get detailed so the proportions stay true to the original.

Should I just add siding over the old material? We don't recommend it on homes of this era. Covering over hides the sheathing, WRB, and flashing — the parts that decide whether the wall stays dry — and adds weight while trapping moisture. Tear-off lets us see and correct what's behind the cladding.

How long does a re-side take? It depends on the home's size, the material, what we find when the old siding comes off, and permitting. We give you a realistic window once we've measured.

Get your Sunnyvale re-side moving

Call (415) 619-5167 or request an estimate. We'll look at the walls, talk through materials that fit your home, and lay out the process. Browse finished work in our project gallery, see the wider South Bay service area, or pair it with window replacement in Sunnyvale.