Interior Door Installation Cost Calculator

Interior door installation typically costs $150 to $700 per door, depending on the style, core, and installation complexity. A standard pre-hung passage or bedroom door runs about $200–$400 installed, a slab hung in an existing frame $150–$300, bifold closet doors similar, sliding barn doors $350–$700+ (largely for the track hardware), interior French doors $450–$1,000, and pocket doors the priciest at $500–$1,000+ because they slide into the wall. Solid-core and solid-wood doors cost more than hollow-core, and doing several doors at once lowers the per-door price. Use the calculator above to price your project by count, style, core, and complexity.

It's the key decision for most interior door jobs. A slab door is just the panel — install it when your existing frame and hinges are in good shape and you only want a new door. The installer mortises the hinges and bores the handle holes to match the old jamb, precise work that costs less since you keep the frame. A pre-hung door comes mounted on hinges in its own complete frame, set into the rough opening as one unit — the choice when the frame is damaged or out of square, or for a more complete replacement. Pre-hung is more foolproof and guarantees a square, properly aligned door, but costs a bit more. For a straightforward swap with a good frame, a slab saves money; for a damaged frame or a guaranteed clean result, pre-hung is worth it.

The core is what's inside, and it drives weight, sound insulation, feel, and cost. Hollow-core doors have a lightweight honeycomb interior with a thin skin — the most affordable and easy to handle, the standard builder-grade choice, but they block little sound and feel hollow when you knock. Solid-core doors have a dense composite core, so they're heavier, block sound far better, feel solid and high-quality, and resist dents — a popular upgrade for bedrooms, bathrooms, and offices where privacy matters, at about the baseline price here. Solid wood is the premium tier with the best look and sound at the highest cost and weight. For most rooms hollow-core is fine; choose solid-core where you want quiet, and solid wood for premium spaces.

Both space-savers cost more than a standard hinged door, for different reasons. A sliding barn door hangs from a wall-mounted track and slides across the wall — the door plus decorative track hardware drives the cost, typically $350–$700+ installed, and it's relatively simple to mount (no in-wall work) but doesn't seal tightly or block much sound. A pocket door slides into a cavity inside the wall and disappears when open, great for tight spaces, but it's the most labor-intensive interior door at $500–$1,000+ because it needs a special pocket frame kit inside the wall. Adding a new pocket door where there wasn't one means opening the wall to install the frame, which raises cost significantly; replacing an existing pocket door is much cheaper. Both styles are in the calculator.

Yes, usually noticeably. A big share of any install cost is the overhead of the visit — travel, setup, tools, and the minimum charge — which spreads across all the doors when several are done together instead of one at a time. Once the installer is on site and working through similar doors, each additional one goes faster. Replacing all the interior doors in a home, or a batch of matching bedroom and closet doors, costs less per door than doing them individually. The savings are biggest on standard, similar doors where labor is a large share of each door's cost; mixed or specialty doors each have their own requirements, so the bundling benefit is smaller but still real. If you have several to do, quote them together.

Interior doors are among the more DIY-friendly projects if you're reasonably handy. A pre-hung door is easiest — set the pre-assembled unit into the opening, shim it plumb and level, fasten, and trim it out. Swapping a slab in an existing frame is trickier because you must precisely mortise the hinges and bore the handle holes to match (a hinge template and knob jig help). The keys are getting the door plumb, level, and square so it swings and latches without binding — fiddly in older homes. Specialty doors — new pocket doors that require opening the wall, barn-door track mounting into studs, and French doors — are more involved and often better for a pro. Many homeowners handle standard passage and closet doors; hire out for many doors, tricky openings, or a guaranteed result.

Yes, and matching them keeps costs down. Standard interior door height is 80 inches (6'8"), common widths are 24, 28, 30, 32, and 36 inches (bedrooms and main passages are often 30–32", bathrooms and closets narrower, 36" for wider or accessible openings), and standard thickness is 1-3/8". If your openings are standard, you can buy stock doors off the shelf affordably and installation is straightforward. Non-standard or older openings may need a custom-sized door or a slab cut and planed to fit, which adds cost and labor. When planning, measure your existing doors and openings — width, height, thickness, and jamb depth for pre-hung — so you order the right size. Significantly non-standard or custom doors cost more than the calculator's standard-door pricing.

Interior doors go in quickly, which is why they're a high-impact, affordable upgrade. A pre-hung door replacing an existing one often takes about 1 to 2 hours, so an installer can do several in a day — replacing all the doors in a typical home is frequently a one-day job. A slab that needs fitting to an existing frame takes a bit longer per door for the precise mortising and boring. Bifold closet doors are fast. Specialty doors take longer: a barn door needs the track mounted securely and level, French doors need careful alignment of the pair, and pocket doors are slowest — replacing an existing one is moderate, but a new pocket door that requires opening the wall can become a multi-hour or multi-day job with drywall work. New trim and painting add time (paint needs drying).

If quiet matters — bedrooms, bathrooms, home offices, media rooms — the single biggest upgrade is a solid-core door, which blocks far more sound than a hollow-core one and feels substantial. A solid-wood door performs similarly at a higher cost. Just as important as the door is the seal: a hinged, weatherstripped door in a snug frame blocks more sound than a barn or pocket door, both of which leave gaps around the edges and don't seal, so they look great but offer limited privacy. For the best quiet, pair a solid-core hinged door with a good frame fit, and consider the sound-dampening upgrade add-on. If a barn or pocket door is a must for the space, accept that you're trading some acoustic privacy for the style and space savings.

Both, in proportion to the home. Fresh, consistent interior doors are a relatively inexpensive way to modernize a home's whole feel — replacing dated hollow, six-panel, or damaged doors with clean modern styles (or upgrading to solid-core) noticeably lifts perceived quality for buyers and in daily use. The return is more about presentation and buyer impression than a dollar-for-dollar payback: doors won't appraise like a kitchen remodel, but tired or mismatched doors are a visible negative, and crisp matching ones read as a well-maintained home. Solid-core doors also add a tangible quality feel (weight and quiet) that people notice. For the cost, updating interior doors is one of the better bang-for-buck cosmetic upgrades, especially when done throughout for consistency.