Bay Area Siding Company re-sides homes across Concord, from the postwar tracts off Clayton Road and Monument Boulevard to the ranch houses spread across the flat central valley and the newer neighborhoods climbing toward Lime Ridge. We're a Larkspur-based siding and window contractor working throughout Contra Costa, and a replacement with us covers the full assembly: stripping the old cladding, inspecting the sheathing and substrate underneath, renewing the water-resistive barrier and flashing, and installing your new siding to the manufacturer's specifications.

Ready to move forward? Request an estimate or call (415) 619-5167 and we'll walk through your project.

Why Concord's tract-era walls reach the end of the road

Concord did most of its growing in the decades after World War II, and a large share of the housing stock is original tract and ranch construction wearing cladding that's now well past middle age. Add the inland climate — long, hot, dry summers with a heavy UV load — and the wear shows up in predictable ways. Sun-baked wood and hardboard lose their paint bond and start to fade, check, and cup; the daily heat-and-cool swing works fasteners loose and opens seams as the material expands and contracts. None of that is a sign your framing is failing. It's simply cladding and finishes that have logged their years in a demanding climate and are ready to be replaced rather than repainted one more time.

When you're seeing several of these together, replacement usually pencils out better than another patch-and-paint cycle:

• Paint that chalks, blisters, or peels within a season or two of a fresh coat
• Boards that split, cup, or feel soft, and trim you can press a screwdriver into
• Open seams and gaps at corners, around windows, and where siding meets the foundation
• Dark streaks, mildew, or a musty smell on interior walls that back to the exterior
• Aging T1-11, hardboard, or chalky aluminum that has simply run out its service life

What a full replacement actually involves

The reason we tear off rather than side over the top is that covering hides the layer that matters. Once the old cladding comes down, we can see the sheathing and substrate, confirm there's an intact water-resistive barrier behind it, and correct flashing at windows, doors, and transitions that many homes of this era never had done properly. (A standard re-side exposes the sheathing and the WRB — not the framing; the studs only come into it if the sheathing itself has to be opened up for a repair.) Siding over failing material also adds weight to the wall and can trap moisture against it. Tearing off costs more up front and leaves you with a wall that's sound from the sheathing out.

A typical project runs consultation and measurement, a written scope, permitting, tear-off and substrate inspection, WRB and flashing, installation to spec, then finish and a walkthrough — we give you a realistic timeline once we've seen the walls.

Choosing a material for an inland climate

Because Concord summers put real heat and UV into a south- or west-facing wall, how a material holds color and shrugs off thermal movement matters as much as the look. We install several systems and would rather talk through the trade-offs on your own home than push a single answer:

• James Hardie fiber cement — dimensionally stable and low-upkeep, with a factory finish that holds color in the sun; details on our Concord James Hardie page
• Fiber cement — the broader category, other manufacturers included
• LP SmartSide — engineered wood with a genuine wood look
• Vinyl siding — a lower-cost, low-maintenance option where it suits the home

We also work in wood, CertainTeed, and aluminum.

Permits, housing stock, and the fire-zone edges

Permits run through the city. Concord is an incorporated city, so a re-side is permitted through the City of Concord Building Division, not the county. Routine repainting doesn't require a permit, but replacing the wall covering is a different scope — we confirm exactly what your project needs with the Building Division and handle the submittal so you don't have to learn the counter.

Most of Concord is flat valley floor — but not all of it. The bulk of the city sits on the level central plain and is not in a mapped fire-hazard zone. Cal Fire's updated Fire Hazard Severity Zone maps, adopted locally in 2025, do place Moderate, High, and in spots Very High designations along Concord's southeastern edges — the neighborhoods around and south of Ygnacio Valley Road near the Cal State East Bay campus, the Crystyl Ranch area, and the slopes bordering Lime Ridge and Thurgood Marshall Regional Park. Fire protection there is provided by the Contra Costa County Fire Protection District (Con Fire). If your parcel carries a High or Very High designation, California Building Code Chapter 7A can govern the exterior wall covering, generally steering toward noncombustible or ignition-resistant materials — but that turns on your specific parcel and scope, so we check it against your address rather than assume. On the valley floor it usually isn't a factor at all.

A range of eras and layouts. From the 1950s–60s tracts to ranch homes on generous lots and the pockets of older housing near downtown and Todos Santos Plaza, Concord's homes vary in size, siding type, and how the walls are reached. That shows up in how a re-side gets planned and priced.

Tackling the exterior as a whole? We also do window replacement in Concord, you can see finished work in our project gallery, and you can read about the wider Contra Costa service area.

What shapes the cost

There's no online price because no two of these homes are the same. The real drivers are the size and shape of the house; what the tear-off uncovers in the sheathing and substrate, since concealed rot adds scope; the material and finish you choose; the number of stories and how reachable the walls are; whether a fire-zone assembly applies to your parcel; and city permitting. We price it accurately after we've walked the walls with you.

Frequently asked questions

Do I need a permit to re-side my home in Concord? Replacing your siding generally does require a permit through the City of Concord Building Division, even though routine repainting does not. We confirm the exact scope for your project and handle the paperwork.

My summers are brutal on the west side of the house — does that change what I should use? It's worth weighing. Materials that hold color and stay dimensionally stable under sustained heat and UV tend to age better on Concord's sun-exposed walls than field-painted wood, which is a big part of why fiber cement comes up so often here. We match the recommendation to your home's exposure.

I'm up near Lime Ridge / Crystyl Ranch. Does the fire zone affect my siding? It can. Parcels carrying a High or Very High Fire Hazard Severity Zone designation may fall under Chapter 7A, which favors noncombustible or ignition-resistant wall assemblies. Most of Concord's flat neighborhoods aren't in a mapped zone, so we verify your parcel's designation before speccing material.

Should I replace the siding or just have new siding installed over the old? For homes of Concord's age we almost always recommend a full tear-off. Covering over hides the sheathing, water barrier, and flashing — the parts most likely to be failing — and adds weight to the wall. Removal lets us find and correct those before the new siding goes on.

Get started

Let's get your Concord re-side scoped right from the sheathing out. Request an estimate or call Bay Area Siding Company at (415) 619-5167. We'll look at your walls, talk materials suited to the inland climate, and lay out the city permit path.