Hanging an interior door looks simple until you meet an older Bellingham home where the opening has not been plumb in decades. That is exactly why prices vary. Interior door installation in Bellingham runs about $250 to $700 per door installed in 2026, and this guide explains what puts your door at one end of that range or the other.
2026 Bellingham interior door price ranges
| Job | Installed labor (per door) | Notes |
|---|---|---|
| Slab swap, good existing jamb | $150 to $300 labor | Plus the door itself |
| Pre-hung, square opening | $200 to $350 labor | Faster when the frame is new |
| Pre-hung, out-of-plumb older opening | $300 to $500 labor | Shimming and reveal work |
| New casing & stops | $60 to $150 per opening | If the old trim does not carry over |
All in, most homeowners land at $250 to $700 per door installed. A hollow-core builder door is cheap; a solid-core door or a paneled door costs more as material. See the full scope on our interior doors page.
Pre-hung vs. slab: which you need
A pre-hung door comes already mounted in its own jamb, so it is the right call when the old frame is damaged or you are changing the opening. A slab is just the door itself, re-hung on your existing jamb, which is cheaper when the frame and casing are still good. The catch is that a slab on an old, racked jamb takes careful fitting, planing the edges and resetting the strike, so it is not always the cheaper install once labor is in. We tell you which fits your opening when we look at it.
Why older Bellingham openings cost more
Homes in Columbia, the Lettered Streets, and other older areas have settled over a century, so rough openings rack out of plumb. A pre-hung door dropped into a racked opening without shimming will rub the jamb, drift open or shut on its own, or never latch cleanly. Hanging it right means shimming the hinge jamb dead plumb and setting an even reveal around the whole door, which simply takes more time than a square new-construction opening in a Barkley build.
Solid-core vs. hollow-core
Most builder-grade interior doors are hollow-core, basically a cardboard honeycomb between two skins. Solid-core doors have a dense core that knocks down sound between rooms and feels substantial, like the door of a much newer or higher-end home. They cost more and weigh more, so the hinges and jamb need to be set properly or a heavy door will sag. Swapping hollow-core for solid-core in bedrooms, offices, and bathrooms is one of the upgrades people notice immediately.
What about a door that just sticks?
If your door sticks or will not latch, you may not need a new door at all. Often it is a jamb gone out of plumb or loose hinges, which we can fix by re-hanging the existing slab, planing the edge, and moving the strike. That falls under trim and carpentry repair and usually runs $200 to $1,200 depending on the fix. If the slab itself is warped or water-swollen, replacing just the slab is the answer.
Getting an accurate quote
Door pricing depends on the condition of each opening, so the accurate number comes from a quick look. When you request a free quote, we check each opening for plumb and square, talk through pre-hung versus slab and hollow- versus solid-core, and give you a per-door price. Before hiring anyone, you can confirm their registration on the Washington State L&I Verify a Contractor tool.