Siding Pricing in Seattle — Honest Per-Square-Foot Rates
Real installed prices for James Hardie, cedar, metal, LP SmartSide, and premium wood siding in Seattle & King and Snohomish counties. No “starting at” gimmicks, no estimate fees, no high-pressure sales calls.
What Homeowners Say
Real reviews from our Google profile — unedited, from real projects.
“We recently had Paul with GP General repair a damaged corner protector and sidings. His estimate was reasonable, his availability was timely, and his job was excellent. Our home hadn’t been re-painted in a while and the paint had considerably faded, yet he was able to match the color perfectly. Now we know who to turn to when in need of another repair work.”
“GP General replaced LP siding on our garage. Paul was very thorough when he came out to do the estimate; he listened to my concerns and was able to work out solutions on the spot. His crew did a great job and were very courteous. They also were careful about cleaning up (I didn’t find any nails!). Really happy with the job and can recommend GP General.”
“I highly recommend GP General Corp for siding replacement. We recently had our wood siding replaced with James Hardie lap siding, and Paul and his team did an excellent job.”
What does new siding cost in Seattle?
Most Seattle contractors won’t publish prices. That’s not because pricing is impossible — it’s because they want you on a phone call before you see a number. GP General Corp publishes rates because we’re tired of how the industry runs. The numbers below are what we actually quote in writing, not “starting at” floors.
How we calculate your project cost
Three factors drive the total: wall area, material choice, and complexity. Wall area is the math part, material is the design part, complexity is the surprises we find on the free assessment.
Wall area: roughly 1.5× your floor area
For a typical Seattle home with two stories, gables, dormers, and bumpouts, your exterior wall area is about 1.5 times your floor area. A simple perimeter-times-height calculation underestimates because it ignores the second story and the eaves.
- 2,000 sq ft house → ~3,000 sq ft of wall area
- 2,500 sq ft house → ~3,750 sq ft of wall area
- 3,000 sq ft house → ~4,500 sq ft of wall area
On the free assessment we measure your exact wall area on-site — the multiplier is just a starting point.
Material: per-square-foot installed rate
Each material has a per-sq-ft installed price that includes labor, fasteners, flashing, the weather-resistive barrier (we use Benjamin Obdyke HydroGap Drainable), and trim. See the table in the next section.
Complexity: what we find on assessment
Dry rot, lead or asbestos in old paint, HOA design review, complex rooflines, second-story access, and waterfront marine details all add cost. We quote these as separate line items so you see exactly what’s driving the number.
Cost per square foot by material (installed)
| Material | Per Sq Ft Installed | Best For |
|---|---|---|
| LP SmartSide (engineered wood) | $15–$21 | Engineered wood alternative to Hardie, traditional siding profiles |
| HardieShingle | $13–$19 | Accent areas, traditional Seattle homes |
| HardiePlank Lap (HZ10 standard) | $14–$20 | Most Seattle homes — the default Hardie product |
| HardiePanel Board & Batten | $14–$21 | Modern farmhouse, contemporary |
| Cedar (Western Red Lap) | $20–$40 | Craftsman, Northwest contemporary, character homes |
| Hardie Artisan Thick-Lap | $20–$26 | Premium Hardie product; deep shadow line |
| Lunawood (thermally-modified pine) | $22–$32 | Modern, low-maintenance natural wood |
| Accoya | $28–$42 | 50-year warranty, dimensional stability |
| Standing Seam Metal | $30–$55 | Contemporary, accent walls, low maintenance |
| Alaskan Yellow Cedar | $30–$50 | Premium cedar — longer-lasting in PNW wet |
| Shou Sugi Ban (charred cedar) | $38–$60 | Statement Northwest contemporary |
| HardieTrim (window/corner) | $12–$18 per linear foot | Trim around windows and corners (linear, not square) |
Prices above are day-one numbers — see what each material costs over 10 and 20 years of Seattle maintenance here.
Rates are installed (material + labor + fasteners + flashing + Benjamin Obdyke HydroGap WRB + trim). Marine-grade hardware adds 10–15% for waterfront addresses.
Sample total project ranges by home size
Multiplying material rate by wall area (1.5× floor area) gives a working total range. These are full-house siding replacement projects:
See what these budgets buy — recent projects:
- Mercer Island Hardie reside with R-5 exterior insulation + Shou Sugi Ban accent →
- Bellevue new construction — Hardie mixed lap & panel with composite accents →
- Greenwood cedar-to-Lunawood reside — cross-batten rainscreen →
| Floor Area | Wall Area | James Hardie | Cedar | Premium Metal |
|---|---|---|---|---|
| 2,000 sq ft | 3,000 sq ft | $42K–$60K | $60K–$120K | $90K–$165K |
| 2,500 sq ft | 3,750 sq ft | $52K–$75K | $75K–$150K | $112K–$206K |
| 3,000 sq ft | 4,500 sq ft | $63K–$90K | $90K–$180K | $135K–$247K |
Ranges cover low-spec and high-spec versions of each material plus typical Seattle architecture (gables, dormers, two-story bumpouts). Single-story rambler homes come in at the low end. Mid-century split-levels with multi-elevation jogs come in higher.
Coastal & waterfront premium
Waterfront addresses — Anacortes, Edmonds Bowl, Mukilteo waterfront, Stanwood, parts of West Seattle — carry a 10–15% premium for stainless steel fasteners and corrosion-resistant flashing. Salt air corrodes standard galvanized hardware in 5–10 years; stainless lasts the lifetime of the siding.
- James Hardie with marine-grade details: $15–$22 per sq ft installed
- Cedar with marine hardware: $22–$44 per sq ft installed
Edmonds Bowl is the borderline case — most addresses are inland enough to keep base rates. We confirm on the free assessment.
What’s included in our prices
Manufacturer warranty
James Hardie’s 30-year non-prorated product warranty, transferable once. If a board ever fails, we diagnose it and document the claim for you; you file it with Hardie.
Workmanship warranty
Our written workmanship warranty on the install, tied to your contract. Reactive — you call Paul directly when something comes up.
Benjamin Obdyke HydroGap WRB
Drainable weather-resistive barrier behind every siding system we install. Standard practice for Seattle’s wet climate, not an upcharge.
Fixed-price contract
You sign one number. Surprises during the project come out of our pocket, not yours — unless they’re true scope changes you approve.
20-point final walkthrough
End-of-project inspection covering caulk lines, paint touch-ups, downspout reattachment, gutter reset, and site cleanup. We don’t leave until you sign off.
Free written quote
On-site assessment with moisture detection, dry rot inspection, and itemized written estimate. No estimate fee, no sales obligation.
What drives cost UP
- Dry rot or moisture damage behind existing siding — typical: $1,500–$8,000 in repair scope
- Lead or asbestos in old paint — abatement adds $3K–$15K depending on home age (pre-1978)
- Complex architecture — lots of dormers, bumpouts, varying eave heights, custom trim details
- HOA design review — adds 2–6 weeks to timeline and design-fee costs (Sammamish, Issaquah, Bellevue HOAs are the most particular)
- Second-story access — scaffolding rental for tall homes on small lots
- Rainscreen retrofit — adding a ventilated cavity behind the siding (recommended for PNW; adds ~$1.50–$3/sf)
What drives cost DOWN
- Single-story rambler — no scaffolding, faster install
- Simple rectangular footprint — fewer trim and flashing details
- Pre-finished material (HardiePlank ColorPlus, pre-stained cedar) — eliminates paint labor
- Off-season scheduling — we sometimes have flexibility on late-fall or early-spring projects
- Partial siding replacement — one elevation, or only the rot-damaged section
Common questions about siding pricing
Why is the price range so wide?
The per-square-foot range reflects material quality differences within the same product family. HardiePlank Lap at $14/sf is the standard HZ10 in a single ColorPlus color; at $20/sf it’s a multi-color scheme with complex trim. Cedar at $20/sf is #2 Common grade; at $40/sf it’s Clear grade. The exact rate depends on your specific selections on the free assessment.
Do you offer financing?
GP General Corp doesn’t run a financing program. Most customers either pay from savings, use a HELOC, or work with a contractor financing service like Hearth or GreenSky on their own. We can hand you a list of common options on the free assessment if helpful, but we don’t take referral fees so we have no preference.
How long is your written quote valid?
60 days from the date we hand you the estimate. After that we may need to re-check material costs — Hardie and cedar both saw 8–12% pricing moves in 2025. If material costs change before you sign, we discuss it openly and adjust either way.
What deposit do you require?
We typically structure payments as a small deposit at contract signing, a draw at material delivery, a draw at substantial completion, and final payment after the 20-point walkthrough. Exact amounts depend on project size. We never ask for more than a third upfront.
Do you do partial siding replacement, or only whole-house?
Both. Plenty of our projects are one elevation that took the brunt of weather, or just the section with dry rot. The per-square-foot rate is slightly higher on small jobs because of fixed setup costs (permit, scaffold, crew mobilization), but it’s still cheaper than re-doing the whole house when only one wall is failing.
Are these prices for Seattle only?
The base rates apply across King and Snohomish counties — Seattle, Bellevue, Kirkland, Redmond, Mercer Island, Sammamish, Issaquah, Edmonds, Lynnwood, Mukilteo, Everett, Snohomish, Monroe, Lake Stevens, Arlington, Stanwood, Anacortes, and Mt Vernon. Waterfront addresses in any of those cities carry the 10–15% marine premium. Outside that footprint we usually decline because the drive time eats into job quality.
How accurate are these prices vs my actual quote?
Use the ranges above as a working estimate — you should land within the published range 9 times out of 10. The variance comes from the complexity factors above (rot discovery, lead abatement, custom architecture). Our written quote on the free assessment is the real number, and we put it on a fixed-price contract so it doesn’t move during the project.
Do you offer discounts for cash payment?
No. Our pricing is the same whether you pay by check, ACH, or financed loan. We don’t run cash promotions because they signal a high markup that’s being “negotiated” away. The fixed price is the fixed price.
Ready for a real number?
The free assessment takes about 45 minutes on-site. We measure your exact wall area, check for moisture damage, walk through material options, and hand you an itemized written quote. No estimate fee, no follow-up sales calls.