Interior Door Installation Cost Calculator: Pre-Hung, Slab & Labor
Click directly on the Casing Trim, Door Jamb Frame, Shaker Door Slab, Lockset Hardware, or Bottom Threshold on the doorway blueprint below to calculate exact replacement costs.
Interactive Doorway Elevation Blueprint (Tap Any Part)
Itemized Zone-by-Zone Interior Door Installation Sheet
Complete breakdown of door slabs, jamb framing, linear casing footage, locksets, painting, and carpenter hours| Doorway Zone | Selected Specification | Quantity / Scope | Materials Cost | Install Labor | Cost / Door | Zone Total | Inspect |
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Compare Top French Doors, Sliding Doors & Window/Door Installers
★ Highlighted reviews match your selected door style & configurationAbout This Interactive Interior Door Installation Cost Calculator: Key Features
Replacing dated hollow flush doors with crisp Shaker panels, solid-core soundproof bedroom doors, or glass French doors is one of the fastest ways to elevate your home’s interior architecture. However, the real-world interior door replacement cost varies dramatically depending on whether you are swapping a bare door slab into an existing frame or installing a full pre-hung jamb assembly with new casing trim and two coats of semi-gloss enamel. Our interactive interior door installation cost calculator models all five physical zones of a finish carpentry installation so homeowners and remodelers can calculate the exact cost to install interior door units before hiring a contractor.
1. Slab-Only vs. Pre-Hung vs. Pocket/French Logic
Automatically separates simple slab-only hinge swaps from full pre-hung split-jamb installations, double French door pairs, and in-wall sliding pocket door kits—adjusting both material pricing and finish carpenter hours.
2. Interactive 5-Zone Doorway Blueprint
Click directly on any structural part of the doorway elevation—Perimeter Casing Trim, Jamb & Rough Framing, Door Slab & STC Core, Lockset & Hinges, or Paint & Threshold—to customize upgrades in real time.
3. Multi-Door Volume Discount & STC Analyzer
Finish carpenters charge a higher minimum trip fee for a single door ($350+), but drop their per-door labor rate by 8% to 18% when hanging 3 to 10+ doors in one visit. Our calculator applies multi-door scaling automatically.
How to Use This Cost to Install Interior Door Calculator (Step-by-Step)
Average Interior Door Replacement Cost Breakdown (Slab vs. Pre-Hung)
When budgeting for your remodel, the national average interior door replacement cost ranges from $285 to $850 per door installed, depending on three primary configurations:
1. Slab-Only Door Replacement ($240 to $520 per door installed): If your existing wooden door jamb is plumb, square, and undamaged, a carpenter can buy a bare door slab ($90 to $260), plane the edges to match the old opening, rout the 3 hinge mortises, bore the 2-1/8″ lockset hole, and hang it in 1.5 to 2.0 hours ($130 to $220 labor).
2. Pre-Hung Interior Door Installation ($420 to $890 per door installed): If your old frames are dinged, out-of-square, or you are upgrading from hollow core to heavy solid-core Shaker doors, installing a pre-hung unit ($180 to $420) is cleaner and faster. The carpenter removes the old casing and jamb, shims the new pre-hung frame plumb on 3 points, nails on 34 linear feet of new casing trim (both sides of the wall), and caulks/paints the assembly.
3. Double French Doors & Pocket Doors ($950 to $2,400+ installed): Widening a load-bearing wall header for double 60″ or 72″ French glass doors or tearing open drywall to install an in-wall pocket door track requires structural framing, drywall patching, and double hardware—averaging 5 to 9 hours of skilled carpentry.