The cost of replacing siding depends more on the size and condition of the walls, and the work around the siding, than on the siding product itself. For a national reference point, HomeAdvisor's cost guide (updated June 2026) puts the average siding replacement at $11,589, and Remodeling magazine's 2025 Cost vs. Value report prices a 1,250-square-foot fiber cement re-side at $21,485. Bay Area projects typically cost more than national averages because labor, permits and disposal cost more here. This guide explains what moves the price on a specific house and how to compare bids so you are not comparing different jobs.
Published cost data, and how to read it
These are third-party national and regional figures, not quotes from Bay Area Siding Company. They are useful for sanity-checking a budget, not for pricing your house.
| Source and date | What it measures | Figure |
|---|---|---|
| HomeAdvisor cost guide, updated June 20, 2026 | Average siding replacement, all materials | $11,589 average; typical range $5,554 to $17,720 |
| HomeAdvisor, same guide | All-in price per square foot, all materials | $1 to $30 per sq ft |
| HomeAdvisor, same guide | Building permit | $150 to $1,500 |
| Remodeling 2025 Cost vs. Value | Fiber cement re-side, 1,250 sq ft, national average | $21,485 job cost |
| Remodeling 2025 Cost vs. Value | Vinyl re-side, 1,250 sq ft, national average | $17,950 job cost |
The two sources measure different things, which is why they disagree. A consumer cost guide blends a wide range of project sizes and scopes, including small houses and partial jobs. Cost vs. Value prices one defined job (1,250 square feet of new siding with trim) for a mid-range house. Neither one knows what is behind your siding, how many stories you have, or whether your lot is in a fire hazard zone. Those are the things that separate a modest re-side from an expensive one.
Cost drivers, ranked by how much they usually move the price
1. Wall area, number of stories and access
Siding is priced on wall area, not floor area. A two-story house has roughly twice the wall of a one-story house with the same footprint, and anything above the first floor needs scaffolding or lifts. Hillside lots, tight side yards and houses built close to the property line take longer to stage and work on. Gables, bump-outs, bay windows and inside corners add cutting and flashing time even when the square footage is small.
2. Siding material and profile
Vinyl is usually the lowest-cost material, engineered wood and fiber cement sit in the middle, and real cedar or redwood is usually the highest. Within each material, premium profiles (thicker boards, deeper shadow lines, panels with routed grooves, shingles) cost more to buy and to install. Our vinyl siding cost guide covers that material in more detail.
3. Tear-off and disposal
Removing the old siding is labor, and hauling it away is a disposal fee. Heavy or layered siding costs more to remove than a single layer of lap boards. Stucco is the heaviest and messiest. Some houses have two or three layers, for example aluminum or vinyl installed over the original wood, and every layer has to come off if you want to see the wall.
4. Sheathing and rot repair found at tear-off
This is the line item nobody can price precisely until the old siding is off. Removing siding exposes the sheathing and weather barrier, and that is where water damage shows up: at the bottom of walls, under windows, below roof-wall intersections and around decks. Older Bay Area homes with redwood, T1-11 or hardboard siding often need some sheathing replaced. A good bid states a unit price for this work (per sheet of sheathing, per linear foot of framing, or per hour) so the extra cost is predictable if damage turns up.
5. Weather-resistive barrier and flashing
The housewrap or building paper behind the siding, and the flashing at windows, doors, roof-wall intersections and horizontal joints, are what keep water out of the wall. They are a modest share of the cost and the part most worth paying for. Two bids can use very different barriers and flashing details, so ask each contractor to name them.
6. Trim complexity
Corner boards, window and door casings, frieze boards, belly bands and fascia are each cut, fastened, caulked and finished. A plain ranch house with simple corners costs far less to trim than a Victorian or Craftsman with wide casings and decorative bands.
7. Windows replaced at the same time
Window replacement adds cost to the project, but it is the cheapest time to do it. With the siding off, new windows can be flashed directly to the weather barrier, which is the best detail for keeping water out. Replacing windows later in a finished wall means cutting back siding and trim.
8. Paint versus factory finish
Primed siding needs a full paint job after installation. Prefinished products such as James Hardie ColorPlus arrive painted and need only touch-up. Compare finished, painted prices, not material prices.
9. Permits and inspections
Many Bay Area building departments require a permit to re-side a house, and some inspect the weather barrier before siding goes on. Fees and rules vary by city and county, so ask who pulls the permit and whether it is included in the price.
10. Fire-zone detailing
On lots in a Fire Hazard Severity Zone, California's wildfire-zone building rules apply to the exterior walls and the parts around them: vents, eaves, the base of the wall and the junctions at decks. That can limit material choices and add details such as ember-resistant vents. Our fire-resistant siding guide covers what is involved. We check your lot's fire hazard zone during the estimate.
11. Lead and asbestos on older homes
On homes built before 1978, federal rules require contractors who disturb painted surfaces to be EPA lead-safe certified and to follow lead-safe work practices, which adds containment and cleanup time. Cement siding and stucco on older homes may also need asbestos testing before removal. See our asbestos siding replacement guide for how that works in the Bay Area.
Why price per square foot quotes mislead
"What is the cost of siding per square foot?" is one of the most common questions, and the answer is rarely useful on its own. HomeAdvisor's range of $1 to $30 per square foot shows how wide the spread is. Cost vs. Value's national fiber cement job works out to about $17 per square foot of new siding, which sits in the middle of that range. Four things make per-square-foot numbers unreliable:
- What is being measured. Some contractors measure gross wall area, some deduct windows and doors, and some quote in "squares" of 100 square feet. Floor area of the house is not the same number at all.
- What is included. A low number may cover siding and labor only, with tear-off, weather barrier, trim, paint and permits billed separately.
- Fixed costs. Scaffolding, permits, dumpsters and setup cost about the same on a small job as a large one, so small projects always have a higher price per square foot.
- Unknowns behind the wall. Sheathing and framing repairs are not in any per-square-foot figure.
Use a per-square-foot figure only to compare bids that cover the same scope on the same house.
How to compare siding bids
Lay the bids side by side and check that each one answers the same questions:
- Product and profile. Brand, product line, texture, exposure and finish, named in writing.
- Tear-off. Whether all existing layers come off, and who handles disposal.
- Weather barrier and flashing. Which barrier, and how windows, doors, roof-wall intersections and horizontal joints are flashed.
- Repairs. Unit prices for sheathing and framing repair, and how much (if any) is included.
- Trim and paint. Which trim pieces are replaced, and whether painting is included.
- Permits. Who pulls the permit and whether fees are in the price.
- Payment schedule. In California, the down payment on a home improvement contract may not exceed $1,000 or 10 percent of the contract price, whichever is less.
If one bid is much lower, it usually leaves something out. Our list of questions to ask a siding contractor goes further.
Ways to control cost without cutting corners
- Simplify the trim where the house style allows it. Fewer bands and narrower casings save labor.
- Choose a factory finish if it removes a separate painting phase.
- Do the windows now if they are near the end of their life, rather than reopening the wall later.
- Phase the work by elevation if needed. Re-siding the worst walls first is possible, but plan the full color and profile now so later phases match.
- Do not skip the weather barrier or flashing. They are a small share of the price, and they decide whether you pay for rot repair again.
Getting a number for your house
We give a free written estimate after a walkthrough, with the product, scope and repair unit prices spelled out so you can compare it with other bids. Our siding replacement page shows how we run a project. For an example of siding and windows done together, see our Pacifica Hardie lap siding and Anlin windows project.
Frequently asked questions
How much does it cost to reside a house?
National figures range widely. HomeAdvisor's June 2026 data puts the average at $11,589, while Remodeling magazine's 2025 Cost vs. Value report prices a 1,250-square-foot re-side at $17,950 for vinyl and $21,485 for fiber cement. Bay Area costs typically run higher, and wall condition, stories and trim change the total more than the material does.
What is the cost of siding per square foot?
HomeAdvisor reports an all-in range of $1 to $30 per square foot across materials. That range is too wide to budget from, because per-square-foot quotes differ in what they measure and include. Compare bids on the same scope instead.
Is it cheaper to install new siding over old siding?
It saves tear-off and disposal, and some manufacturers allow it over flat, sound surfaces. It also hides the condition of the sheathing and weather barrier, which is where water damage starts. On older Bay Area homes, removing the old siding is usually the better value.
Does replacing siding add resale value?
Remodeling magazine's 2025 Cost vs. Value report estimates that fiber cement siding replacement recoups about 114 percent of its cost at resale nationally, and vinyl about 97 percent. Results vary by market and by house.
Do I need a permit to replace siding in the Bay Area?
Many Bay Area building departments require one for re-siding, and some inspect the weather barrier before the siding goes on. Rules differ by city, so confirm with your local building department or ask your contractor who pulls the permit.
Sources
The information provided here is intended for general reference and should not be considered professional advice. Before starting any project, consult a licensed contractor. Product features, specifications, and warranties may have been updated since this was published. Any mention of brands or products reflects personal opinion and does not constitute an endorsement or warranty.
