Bellingham Siding Why a Single "Price Per Square Foot" Number Won't Tell You Much
Ask five siding companies what replacement costs and you'll get five different numbers, usually quoted as a price per square foot. The problem is that "per square foot" pricing hides almost everything that actually determines your final bill. Two houses with identical square footage can cost thousands of dollars apart once you account for how many stories the house has, how much of the old siding has to come off versus be covered, how many corners and window returns there are, and what condition the sheathing underneath turns out to be in.
In Bellingham and the rest of Whatcom County, that variability shows up more than in drier climates. A lot of our older housing stock — especially homes built before the 1990s in neighborhoods like the York, Columbia, and Sunnyland areas — has been through decades of Pacific Northwest weather. What looks like a straightforward re-side from the street can turn into a rot-repair job once the old siding comes off. We'd rather tell you that upfront than let a "too good to be true" number surprise you mid-project.
The Cost Drivers That Actually Matter
Tear-off and disposal
Removing existing siding, hauling it away, and disposing of it is real labor and real dump fees. Homes with multiple layers of old siding (not uncommon on older Bellingham homes that were re-sided once already) take longer to strip than a single-layer tear-off.
What's underneath
Once the old siding is off, the sheathing gets inspected. Soft or water-damaged sheathing has to be replaced before new siding goes on — skipping this step is how siding jobs fail early. This is the single biggest source of "surprise" cost on a re-side, and it's also the reason a contractor who won't commit to opening things up and inspecting before finalizing price is one to be cautious of.
House complexity
Square footage is only part of the equation. A simple rectangular one-story home with few windows costs meaningfully less per square foot to side than a two-story house with dormers, bump-outs, lots of window and door trim, and steep or difficult roof lines that complicate access and scaffolding.
Product selected
Vinyl, engineered wood, fiber cement, and traditional wood siding all sit at different price points, and the finish you choose (factory-applied color versus field-painted) changes both the upfront cost and what you'll spend maintaining it over the next 15 years.
Trim, flashing, and weather detailing
Proper window and door flashing, water table detail, and trim work are not optional add-ons — they're what keeps water out of the wall assembly. In a climate with as much driving rain as ours, corners cut here cost far more later than they save now.
Broad Cost Ranges by Material
These are general, honest ranges for installed cost — not a quote, and not adjusted for your specific house. Use them to understand relative cost, not to budget to the dollar.
| Material | Typical Installed Range | What Drives It Up or Down |
|---|---|---|
| Vinyl siding | Lower end of the market | Panel quality/thickness, insulated backing, trim detail |
| Engineered wood (LP-type) | Mid-range | Panel style, factory finish, edge treatment |
| Fiber cement (James Hardie) | Mid-to-upper range | Plank style, ColorPlus vs. field-painted, trim package |
| Traditional wood/cedar | Upper range | Grade of lumber, finish system, ongoing maintenance |
Fiber cement usually lands above vinyl and roughly comparable to or above engineered wood on day one. Where the comparison changes is over a 15-20 year window, once you factor in repainting cycles, moisture-related repairs, and how each material actually performs against wind-driven Pacific Northwest rain. We'll get into that below.
What a Legitimate Quote Should Include
The lowest number on paper isn't always the lowest cost in practice. Before comparing bids side by side, make sure you're comparing the same scope of work.
- Full tear-off and disposal of existing siding, not just cover-over
- Sheathing inspection with a defined process (and pricing) for any rot repair found
- House wrap or weather-resistive barrier replacement, not reuse of old wrap
- Proper window, door, and penetration flashing — named specifically, not lumped into "installation"
- Trim, corner boards, and water table detail spelled out
- Product manufacturer, specific line, and finish type (factory-finished vs. field-painted)
- Warranty terms in writing — both material warranty and the contractor's labor warranty
- Whether permits are included and who's pulling them
If a quote is vague on any of these, ask directly. A contractor who can't tell you what's under your existing siding's line item for "flashing and weatherproofing" hasn't priced the job carefully — they've guessed.
What's Different About Pricing Siding in Whatcom County
Location affects cost here more than people expect. A few things specific to Bellingham and the surrounding county:
- Moisture exposure: Our long moss season and driving rain off the Sound mean water management detailing isn't optional trim — it's structural to the job, and it takes time to do right.
- Salt air: Homes closer to Bellingham Bay and the waterfront see faster wear on lower-grade materials and fasteners, which affects both material choice and long-term cost.
- Older housing stock: Many homes in the core Bellingham neighborhoods are 40-100+ years old. Re-siding often uncovers sheathing or framing issues that a newer subdivision home in Ferndale or Lynden is less likely to have.
- Access and terrain: Hillside lots and homes with limited driveway access (common in parts of the county) can add scaffolding or staging cost that flat-lot homes don't have.
Repair, Partial Re-Side, or Full Replacement?
Not every siding problem needs a full tear-off. Here's the general logic we walk homeowners through:
- Isolated damage on otherwise sound siding — a repair or partial panel replacement is often reasonable, especially on younger installations.
- Widespread but surface-level wear (fading, chalking, minor cracking) on a material that's structurally intact — this is a judgment call that depends on the material and how much service life is left.
- Recurring moisture problems, soft spots, or siding that's failed in multiple places — this is usually a sign the underlying water management has failed, not just the surface material, and points toward full replacement.
Patching a symptom without addressing why it happened tends to cost more in the long run than doing the full job once, correctly.
Why We Only Install James Hardie — and What That Means for Cost
We don't install vinyl, engineered wood products, or unfinished wood siding. That's a deliberate standard, not a sales position, and it affects how we talk about cost with homeowners.
James Hardie fiber cement costs more up front than vinyl and is comparable to or somewhat more than engineered wood, depending on the line and finish. What it buys you: a non-combustible material, a factory-applied ColorPlus finish that isn't relying on a field paint job to hold color and protect the substrate, HZ5-engineered product lines built for climates like ours, and a transferable warranty backed by the manufacturer rather than resting entirely on a contractor's word.
We've made the call that installing a product we won't stand behind for 20-plus years in this climate isn't a way to save a customer money — it's a way to move the cost from today to five or ten years from now, usually as a repair bill instead of a planned project. If your budget genuinely requires a lower up-front number, we'll tell you that honestly rather than quote a product we don't believe in for Whatcom County weather.
Budgeting Realistically
A few practical steps that make the number you get back more accurate and less likely to change mid-project:
- Get a contractor to physically inspect the exterior and, where possible, look at a sample area of what's underneath before quoting — not just measure from the driveway
- Ask what happens to the price if rot repair is needed, and get that rate in writing beforehand
- Decide on trim and finish preferences before bidding, since these change the number more than people expect
- Build in a contingency, especially on homes over 30 years old
- Compare quotes on scope first, price second
Getting a Number You Can Actually Use
The only way to get a cost that means something is to have someone look at your actual house — its size, layout, current siding condition, and what's likely underneath it. Broad ranges are useful for planning, but they're not a substitute for a real walk-through.
If you'd like an honest, no-pressure estimate for your home in Bellingham or elsewhere in Whatcom County, the form below gets you a real number based on your house, not a national average.