Most siding quotes in Bellingham land somewhere between "that seems too cheap" and "what is even on this invoice." Re-siding a house is a big-ticket job, and homeowners deserve to know why the number is what it is. This is the guide we wish existed: an honest look at what siding installation costs in Bellingham in 2026, what drives it up or down, and where the corner-cutting hides.
For a typical Bellingham home, a whole-house re-side runs $9,000 to $45,000. That's a wide range because the material you choose swings it more than anything else. Insulated vinyl and engineered wood land at the low end, James Hardie fiber cement sits in the middle, and real cedar runs highest.
What a re-side costs by material.
Material is the single biggest driver. Here is what each one runs for a whole-house re-side in Bellingham in 2026, installed with the flashing and a rainscreen done right:
| Material | Whole-house range | Notes |
|---|---|---|
| Insulated vinyl | $9,000 to $20,000 | Lowest cost, low maintenance |
| Engineered wood (LP SmartSide) | $12,000 to $24,000 | Real wood look, handles moisture |
| Fiber cement (James Hardie) | $14,000 to $38,000 | Won't rot, fire-resistant, the workhorse here |
| Cedar shingle or shake | $18,000 to $45,000 | Best look on character homes, most upkeep |
These are real 2026 Whatcom County figures for a full re-side, not a repair. They include tear-off, a new weather barrier, a rainscreen, the siding, trim, and flashing. We get into our fiber cement numbers in more detail in the James Hardie cost guide for Bellingham, and we break down the rainscreen line specifically in the rainscreen cost guide.
The four things that move the number.
Beyond material, four factors decide where in the range your house lands.
1. Exterior wall square footage
Siding is priced by the square foot of exterior wall, not by the floor area of the house. A compact two-story with a small footprint can have more wall to cover than a sprawling single-story ranch. We measure the actual walls, gables included, so the quote reflects what's really there.
2. How many stories
A two-story or split-level costs more per square foot than a single-story, because the upper walls need staging and scaffolding and the work is slower and more careful up high. Tall gable ends and walls with a lot of height add the most.
3. Material and detailing
Within a material, the details move the price: the siding profile (lap, panel, or shingle), how much trim and how many corners, and whether you want a rainscreen, which you should in this climate. Historic matching on a cedar home in Fairhaven or the Lettered Streets adds labor too.
4. How much rot we find
This is the one homeowners can't see coming, and it's the biggest reason a final number differs from the first estimate. On Bellingham homes from the 60s through the 90s with direct-applied T1-11, hardboard, or face-nailed cedar, rotted sheathing and framing behind the old siding is common. We don't know the full extent until we open the wall.
A siding quote is a contract for specifics. If it's one price on one line, that's not a quote, that's a guess.
Why rot is the wildcard.
In a climate that gets about 35 inches of rain a year and stays damp for long stretches, the old direct-applied siding on a lot of Bellingham homes has been trapping moisture against the sheathing for decades. When we pull it off, we routinely find soft OSB, black sheathing, and damaged framing around windows and at the bottom plate.
Here's how we handle it so there are no surprise bills: we open the wall, photograph anything soft, show you, and write a separate change order with the cost before we repair it. You see the wall before we close it back up. Budget a contingency of $1,500 to $6,000 for rot on an older home, more if the house has obvious water damage. Our guide to the rot we find behind old siding shows what this looks like in practice.
What a good quote includes.
A line-item siding quote should tell you:
- Exterior wall square footage, measured
- The siding material and product line, in writing
- Whether a rainscreen is included, and what kind
- The flashing scope: window heads, kick-outs, roof-to-wall joints
- Tear-off and haul-away of the old siding
- How rot will be handled if found (the change-order process)
- Trim, corner boards, and the warranty
If a quote skips the rainscreen and the flashing scope, that's usually where a cheap bid is saving money, and it's exactly the part that decides whether your siding lasts. Knowing whether you need a rainscreen in Bellingham is worth doing before you compare bids.
When a cheap quote is a red flag.
If a whole-house re-side comes in well below the ranges above for your material, something is missing. Usually it's the rainscreen, the flashing detail, or an assumption that the wall behind the old siding is sound when it probably isn't. Siding is not a commodity. The labor and the water detailing are the value, and rushed labor on a wall that traps moisture is the most expensive thing you can buy, because you pay for it again in twelve years.
Our typical Bellingham re-side.
A 1,900 sq ft two-story home in Roosevelt, re-sided in James Hardie fiber cement on a rainscreen, with new trim and standard window flashing and a moderate amount of rot repair at two windows, typically runs $26,000 to $32,000. That includes tear-off, haul-away, a new weather barrier, the rainscreen, the siding, corner boards, and a final walkthrough. It does not include heavy structural framing repair or a full window replacement, which we'd quote separately if the wall calls for it.
For a free walkthrough and a written line-item estimate, Bellingham Siding Co. handles fiber cement, cedar, and vinyl and engineered wood re-sides across Bellingham and Whatcom County.