Door Installation Cost
Installing a new interior door is more involved than it might seem — it's not just hanging a slab, it's making sure the frame is square, the door swings and latches properly, and the hardware is fitted correctly. A door that isn't installed well will stick, sag, or fail to latch within months.
Based on typical labor and material ranges for this job nationwide. Your actual price depends on your location, the specific scope, and materials chosen — get an exact estimate below.
Labor
Labor covers removing the old door (if replacing one), fitting the new door to the frame (sometimes trimming is needed), hanging it on hinges, and installing hardware. A pre-hung door (already in its own frame) is faster to install than a slab door that needs to be fitted to an existing frame.
Materials
The door itself is the main material cost and varies by material (hollow-core, solid-core, solid wood) and style. Hinges, a doorknob or lever set, and shims/trim complete the install.
What Affects the Price
- Pre-hung door vs. slab-only door — pre-hung is faster to install
- Door material and style — solid wood doors are heavier and pricier than hollow-core
- Whether the existing frame is square and in good condition, or needs repair
- Hardware included — a basic knob vs. a higher-end lever set or lockset
- Trim/casing work needed to finish around the new door
Difficulty
A pre-hung door replacement in a square, good-condition frame is a moderate job. An out-of-square frame, a door that needs significant trimming to fit, or matching existing trim profile all add difficulty.
Things to Consider
- Measure the existing door opening before shopping so the new door fits without excessive trimming
- Decide on hardware (knob vs. lever, finish) ahead of time so it can be included in one visit
- If the frame is damaged or out of square, budget for frame repair as part of the job
Actual pricing varies by location, job complexity, materials chosen, and the individual contractor. The range above is a general guide, not a quote — for a number based on your specific job and ZIP code, use the free estimator below.
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Get Your Free EstimateFrequently Asked Questions
What's the difference between a pre-hung and slab door?
A pre-hung door comes already mounted in its own frame, ready to install into the rough opening. A slab door is just the door itself, which needs to be fitted to your existing frame — more labor-intensive.
Does door installation include hardware?
Sometimes — it depends on the quote. Confirm whether a doorknob/lever set is included or needs to be purchased and specified separately.
How do I know if my door frame needs repair?
Signs include a door that doesn't sit flush, visible gaps, or a frame that looks warped or damaged — a contractor can assess this during the estimate.
How long does installing one interior door take?
A pre-hung door in a good frame typically takes a couple of hours; a slab door needing custom fitting, or frame repair, takes longer.