If you're finishing a basement, building an addition, or putting up an ADU in Bellingham, drywall is the step that turns framing into a real room. Here's what hanging and finishing actually costs in 2026, priced the three ways homeowners ask about: by the square foot, by the room, and for a whole project.
The headline number: drywall installation in Bellingham runs about $2.25 to $4.50 per square foot of board in 2026, including hanging, taping, three coats of mud, sanding, and a Level 4 finish. Board type, finish level, and ceiling height move it within that range.
What drives the per-foot price.
| Factor | Effect on price |
|---|---|
| Board type (1/2" vs 5/8" vs Type X) | 5/8" and Type X cost more |
| Finish level (Level 4 vs Level 5) | Level 5 adds a full skim coat |
| Ceiling height (over 9 ft, vaulted) | +15 to 30% (staging) |
| Job size | Bigger jobs price better per foot |
| Moisture-resistant or cement board | + material cost where water lives |
| Access and prep | Tight basements add labor |
By the room.
Most homeowners think in rooms, so here's a rough Bellingham guide for hanging and finishing to a standard Level 4:
- Standard bedroom (10x12): $1,200 to $2,200.
- Bathroom (moisture-resistant board): $900 to $1,800.
- Two-car garage (fire-rated wall): $2,500 to $5,000, more with the Type X fire separation.
- Finished basement (700 to 1,000 sq ft): $4,000 to $9,000.
- ADU or addition: by the square foot of board, usually the low to mid thousands.
The right board for a Bellingham room.
Material choice matters more here than in a dry climate. Standard 1/2-inch board is fine for most walls and ceilings. But the wall and ceiling between an attached garage and the living space is a fire separation that needs 5/8-inch Type X board and proper firetaping to pass inspection. And in bathrooms, laundries, and damp basements, we use moisture-resistant board, the green or purple stuff, and cement board where there's direct water. Paper-faced rock in a damp Bellingham room is mold waiting to happen.
Level 4 vs Level 5, and why it matters to your bill.
Level 4 is the standard finish for most walls and ceilings: taped joints, three coats, sanded smooth, ready for flat or matte paint. Level 5 adds a thin skim coat over the entire surface, used for walls under glossy paint or strong raking light, where seams would otherwise telegraph. Level 5 costs more because it's literally another coat across every square foot plus an extra sanding pass. Most rooms only need Level 4; save Level 5 for big windows and glossy finishes. We break this down further in our Level 4 vs Level 5 guide.
Hang to the inspection, not around it.
New drywall has to go up after your framing and insulation pass a City of Bellingham or Whatcom County inspection, never before. We schedule the hang to that sequence so nothing has to come back down. It's one reason a drywall timeline depends partly on your other trades, and why we coordinate rather than just show up.
The cheapest hang is the one that passes inspection the first time and never gets opened back up. Right board, right sequence, right finish level.
For a measured, line-item number on your project, request a free quote or call us. We hang and finish across Bellingham and Whatcom County, and we'll tell you exactly what board and finish level your space needs. You can also see the full process on our drywall hanging and finishing page.