How Much Does Carpet Installation Cost in Bellingham in 2026?

Carpet installation in Bellingham costs $3.85 to $8.80 per square foot installed, with carpet, pad, tack strip, seaming and power stretching in that number. A whole-house carpet job on a typical 1,500 square foot Bellingham home runs $3,850 to $9,900. Stairs add $275 to $550 per flight, a pad upgrade adds $0.35 to $1.10 per square foot, and pulling and hauling the old carpet runs $0.50 per square foot. Those figures match the published carpet installation rates for Bellingham Floor Pros. The pad under the carpet decides how long the carpet lasts, and the subfloor under the pad decides whether the install holds up at all in a wet-climate house, so both get their own sections below.

Prices verified October 2026 against the published Bellingham Floor Pros carpet installation and subfloor repair rates.

Carpet installation cost in Bellingham in 2026

The $3.85 to $8.80 per square foot band covers polyester at the bottom, mid-grade nylon in the middle and wool blends at the top. Fiber choice moves the number more than square footage does. A 12 by 12 bedroom (144 square feet) runs $555 to $1,270 installed, and most homeowners land in the middle of that range with a nylon cut pile over an 8 pound pad. Rooms under about 100 square feet usually bill at a small-job minimum rather than the per-foot rate, so a single walk-in closet costs more per foot than a bedroom. The carpet installation guide carries the full bid checklist and the same price table in a form you can print.

Installed cost by carpet fiber

Installed prices below include pad and labor, per square foot, before tax. The bedroom column is a 12 by 12 room with no stairs and no subfloor work.

Within each fiber, face weight and twist level set where the price lands. A 40 ounce nylon at 5.5 turns per inch costs more than a 30 ounce nylon at 3.5 turns per inch and wears for years longer. The nylon against polyester carpet comparison prices the two common fibers side by side and works out the cost per year of service for each.

What the installed price includes

A complete carpet install at these rates covers the carpet, a separate pad, new tack strip where the old strip is rusted or split, hot-melt seam tape with the seams placed away from doorways and traffic lanes, power stretching, transition strips at doorways, and a vacuum and walkthrough at the end. Power stretching is the step that separates a 12 year carpet from one that ripples down the hallway in 18 months. A knee-kicker seats the carpet on the tack strip but cannot load the backing enough to hold it flat, so a quote that does not name a power stretcher is a quote for a knee-kick install.

Line items outside the per-foot price

Several costs sit outside the installed rate and show up as their own lines on a complete quote. Old carpet and pad pull and haul-away is $0.50 per square foot. Stair carpet is $275 to $550 per flight on top of the carpet for those steps. Pad upgrades run $0.35 to $1.10 per square foot over the base pad. Subfloor sheathing replacement, when the tear-out exposes rotted plywood or swollen particleboard, is priced at $5.50 to $13.20 per square foot of new sheathing with a $330 minimum on the subfloor repair page, a crawlspace vapor barrier at $1.65 to $3.30 per square foot, and slab moisture mitigation at $880 to $2,750 per project. Smaller items follow trade rates rather than a published schedule: tack strip replacement at about $1.65 to $2.75 per linear foot, a Z-bar transition at $28 to $50 per doorway, a stair nose where carpet meets a wood landing at $39 to $83 each, and squeak screws before the pad goes down at $0.20 to $0.45 per square foot.

Five Bellingham carpet jobs, priced

The scenarios below apply the installed band to common room sizes. Each row assumes a dry subfloor and no stairs unless the row says otherwise.

That whole-house row is the published whole-house range and already includes a flight of stairs. For a quick number on your own floor plan, the flooring cost calculator runs the same rates against your square footage and lets you toggle stairs and tear-out on and off.

What moves the carpet price up or down

Two of the three big variables are choices made at the showroom: the fiber and the pad. The third is whatever the tear-out exposes under the old carpet. Bellingham housing stock, with its vented crawlspaces, 1920s plank subfloors in Fairhaven and the Lettered Streets, and 1980s particleboard underlayment in Cordata and Barkley, produces that third variable more often than drier markets do.

Carpet fiber and twist level

Fiber is where the spread is widest. Nylon runs roughly a dollar a foot more than polyester at a similar face weight and lasts about twice as long. Wool blends cost about a third more than nylon again and last 20 years or more in a room without direct sun. Twist level, counted in turns per inch, matters as much as the fiber name: a 5.5 turn nylon outlasts a 3.5 turn nylon by years even when both are sold as premium. A seller who cannot give a turns-per-inch figure is selling builder grade.

Pad weight and density

A 6 pound rebond pad is the builder default and runs $0.35 to $0.55 per square foot. An 8 pound rebond with a moisture barrier runs $0.60 to $0.90 and is the usual upgrade. A 10 pound rebond or frothed foam sits at the top of the $0.35 to $1.10 upgrade band and extends carpet life by 20 to 30 percent. On a 1,000 square foot job the step from 6 pound to 8 pound barrier pad adds roughly $300 to $400, which is the cheapest extra years of carpet life on the quote. The carpet padding guide covers density, thickness and the pad types sold in Bellingham.

Moisture-barrier pad for basements and wet rooms

Barrier pad carries a plastic film bonded to its top face so a spill or a pet accident stays in the carpet layer instead of soaking the pad and the subfloor. The film adds $0.25 to $0.35 per square foot over a plain pad of the same weight. On any floor below the main level, over a slab, or in a room that opens to a deck or the yard, the barrier pad is the standard spec. In a dry upstairs bedroom it is optional.

Subfloor findings after tear-out

Tack strip needs replacing on about half of Bellingham carpet jobs. Rotted plywood, delaminated OSB or swollen particleboard shows up most often in rooms over crawlspaces, next to exterior doors, and under old kitchens and laundries, and is replaced at $5.50 to $13.20 per square foot with a $330 minimum. A soft joist under the bad sheathing is sistered at $220 to $440 per joist. These items are quoted after the carpet comes up, so a complete bid states the unit rates in advance and holds the install until the fix is approved in writing.

Subfloor moisture under carpet in Bellingham homes

Carpet and pad hold water. Between October and March the interior humidity in a Bellingham house without active dehumidification rises enough that a carpet over a damp subfloor never fully dries, and the pad becomes the wettest layer in the room. Odor and mold follow within 18 to 24 months. The fix at that point is new carpet, new pad, often new sheathing, and moisture mitigation at $880 to $2,750, which is why the moisture check happens before the pad is ordered.

Moisture testing before the pad goes down

On a wood subfloor, a pin meter reading above 14 percent moisture content pauses the install until the source is found. Over a crawlspace that usually means a missing or torn ground vapor barrier, a plumbing drip, or vents blocked by insulation. On a concrete slab, a calcium chloride test (ASTM F1869) or an in-slab relative humidity probe (ASTM F2170) is the standard: carpet pad manufacturers generally cap acceptable readings near 5 pounds per 1,000 square feet per 24 hours, or 80 to 85 percent relative humidity, and a slab above that gets a mitigation coat before carpet. Slab-on-grade rooms in Cordata and Barkley test wet more often than the older raised-floor houses in Sehome.

Crawlspace vents and vapor barriers

Washington's residential code amendment (WAC 51-51-0408) calls for 1 square foot of crawlspace vent per 300 square feet of floor area, reduced to 1 per 1,500 square feet when a 6 mil polyethylene ground cover is in place. A bare dirt crawlspace under a carpeted room is the single most common moisture source in Bellingham carpet failures. Replacing a torn or missing barrier runs $1.65 to $3.30 per square foot of crawlspace, which on a 1,000 square foot footprint is $1,650 to $3,300, a cost that belongs on the carpet bid for any raised-floor house in Fairhaven, Columbia, Edgemoor or Sudden Valley. Laying carpet over a crawlspace with no ground cover also voids most manufacturer moisture warranties.

Rooms where carpet is the wrong floor

Some Bellingham rooms should not get carpet at any price. A slab that fails the moisture test twice, a basement with a history of seepage along the footing, or a lakeside crawlspace in Sudden Valley that holds above 80 percent humidity all year are better served by LVP over a vapor barrier underlayment, at $4.40 to $11.00 per square foot installed. The basement flooring guide for the wet months covers when carpet works below grade, and the carpet against LVP for Bellingham bedrooms guide prices both floors room by room for the upstairs.

Carpet cost room by room

Whole-house quotes hide the per-room math. A 1,500 square foot Bellingham carpet job usually breaks into bedrooms, a hall, a flight of stairs and one living space, and each part prices a little differently.

Bedrooms

Three average bedrooms total about 420 square feet, or $1,615 to $3,700 installed. Bedrooms see light traffic and little sun, so the better spend is the pad rather than the carpet: an 8 pound barrier pad across three rooms adds about $125 to $170 and several years of life, while a fiber upgrade in a low-traffic room is money that never shows. Kids' rooms and primary suites are where polyester is a reasonable call.

Stairs, waterfall against Hollywood

Stairs are the highest-labor surface in the house. Carpeting a standard 13 step flight from a Bellingham main floor to the bedrooms runs $275 to $550 for the flight on top of the carpet for those steps, and the method sets where in that range the job lands. A waterfall install drapes the carpet over each nosing and down the riser in one run; it is faster and cheaper. A Hollywood wrap tucks the carpet tight under each nosing so the step profile shows, uses more carpet and more time, and sits at the upper end. Open-sided or winder stairs add cutting time either way. The Bellingham stair flooring guide compares carpeted stairs with wood treads and runners.

Hallways and living rooms

Halls are narrow and take every trip through the house, so they should get the most durable fiber on the job, usually solution-dyed nylon at 5.0 turns per inch or better, regardless of what the bedrooms get. A 400 square foot living room in solution-dyed nylon with an 8 pound barrier pad runs $2,200 to $2,860 installed. Where a slider opens to a deck or the yard, the barrier pad is worth having on the main floor too.

Basements and rec rooms

Below-grade carpet in a Bellingham home requires a moisture-barrier pad and a passing slab or subfloor test. A 350 square foot finished basement runs $1,350 to $3,080 installed, plus mitigation if the slab reads wet. Olefin Berber is the usual pick here because the fiber absorbs almost no water. Households with dogs should read the pet-friendly flooring guide before carpeting a basement, since a basement carpet that takes accidents is the hardest one in the house to dry.

Finding carpet installers near Bellingham

Most carpet in Whatcom County is sold one of two ways: a retailer sells the carpet and sends a subcontracted installer, or an installation company does the measure, orders the carpet through its supplier accounts and installs with its own crew. The price per square foot ends up similar; what differs is who answers when a seam opens in year two. The checks below take about ten minutes and apply to either model.

Checking a carpet installer's state registration

Washington requires every contractor who installs flooring for pay to register with the Department of Labor and Industries, carry a bond, and carry liability insurance. Since July 2024 the bond is $30,000 for a general contractor and $15,000 for a specialty contractor, and most carpet installers register as specialty. Enter the business name or registration number from the bid at lni.wa.gov/verify and read the result for an active status, the bond and surety carrier, and the insurance policies on file with their dates. A retailer that sends a subcontracted installer should name that installer so the same lookup can be run on the crew that will be in the house. The contractor verification guide walks through the result page field by field.

Questions for a carpet layer before the measure

Four questions sort carpet installers quickly. Whether the crew power stretches every room or knee-kicks rooms under a certain size. Where the seams will fall, since seams belong perpendicular to the main window and away from doorways. What pad weight and density is in the base price, in pounds and in pounds per cubic foot. And what the installation warranty covers, separate from the manufacturer's carpet warranty. Bellingham Floor Pros carries a 2 year installation warranty alongside the manufacturer warranty on the carpet itself, which runs 5 to 25 years depending on the product.

$99 carpet installation offers and free installation deals

A $99 whole-house install or free installation with carpet purchase is a real offer with a specific shape. The installation labor is discounted and the carpet price carries the difference, so the per-foot carpet price in those deals runs higher than the same product bought with installation quoted separately. The offers also tend to exclude the pad, the tear-out and haul-away, stairs, furniture moving, and any subfloor repair, each of which comes back as an add-on at the measure. Priced line by line against a $3.85 to $8.80 installed quote that already includes pad and stretching, the two usually land within a few hundred dollars of each other on a whole house, and the installed quote is the one with the subfloor inspection in it. Reading both bids as a total for the same rooms, same pad spec and same tear-out is the only fair comparison.

Carpet replacement against a re-stretch

Ripples down a hallway or bubbles in a bedroom do not always mean new carpet. If the fiber is sound and the backing has not delaminated, a re-stretch pulls the carpet back to the tack strip with a power stretcher and trims the excess, usually in an hour or two per room and for far less than replacement. Carpet that is matted flat in the traffic lanes, stained through to the backing, or more than 12 to 15 years old is a replacement job, because stretching will not bring the pile back. Carpet replacement runs the same $3.85 to $8.80 per square foot as a first install, plus $0.50 per square foot to pull and haul the old material.

Reading a carpet installation quote

Carpet is the easiest flooring category to lowball, because the variables that drive the real price are the ones a thin quote leaves out. A quote worth comparing lists the following.

Five specs on every carpet quote

Face weight in ounces per square yard (35 or more for a residential cut pile), twist level in turns per inch (5.0 or more for stairs and halls), the fiber by name, the pad weight and density (8 pound at 5 pounds per cubic foot or better), and the warranty terms for both the carpet and the installation. A quote missing any of these is an estimate, and two estimates cannot be compared against each other.

Warning signs in a low quote

A quote under $3.85 per square foot installed in Bellingham usually omits the pad, the haul-away, or both. A quote that does not name the pad weight is pricing a 6 pound builder pad. A quote with no subfloor inspection line will produce a change order on install day. A next-day install promised over a crawlspace or a slab skips the moisture reading that prevents an 18 month mold job.

Quote line items

Every complete quote carries the square footage measured on site, the carpet brand and product number with face weight and twist, the pad type and weight, subfloor notes from the walkthrough (squeaks, moisture readings, vapor barrier status), tack strip footage, the transition count, tear-out and disposal, stairs by the flight, and labor, on one page. The guide to reading a flooring estimate covers the same checklist for every floor type.

Carpet installation cost FAQ

Summary

Budget $3.85 to $8.80 per square foot installed for carpet in Bellingham, $3,850 to $9,900 for a whole house, and $275 to $550 per flight of stairs. Put the upgrade money into the pad before the fiber, and into a moisture-barrier pad anywhere below the main floor. Get the face weight, twist level, pad spec and subfloor notes in writing on every bid so the bids can be compared as totals. The carpet that lasts 15 years in a Bellingham house is the one installed over a subfloor that was metered dry first.

For an itemized carpet quote with the subfloor metered and the pad, stairs and tear-out priced as separate lines, in Bellingham, South Hill, Cornwall Park, Ferndale or Lynden, request a free carpet installation estimate. Samples come to the house for the measure.

Related reading: the flooring installation cost guide puts carpet beside hardwood, LVP and tile on one table, the flooring removal cost guide covers tear-out for every floor type, and the squeaky floors guide explains the screw-down that should happen before new pad goes down.