Every homeowner eventually faces the same question: how much does it really cost to replace or add an interior door? Search trends show thousands of monthly queries for “cost of interior door,” and the answers vary widely. At CountBricks, we use AI-generated estimates, live material databases, and voice-to-quote technology to bring clarity to residential pricing. This guide unpacks every factor so you can budget with confidence.
An interior door looks simple, yet pricing swings from $120 to more than $950 per opening. Without standardized data, contractors rely on historic averages or guesswork. CountBricks eliminates the guess by combining:
• Real-time supplier feeds synced to regional warehouses
• Labor productivity tables updated weekly by our algorithm
• Voice-driven field measurements that feed directly into your estimate
The result? A line-item cost you can trust before the first hinge is ordered.
1. Door Type and Core
• Hollow core molded: Lightweight, budget friendly, averages $65–$105 per slab
• Solid core MDF: Enhanced sound control, averages $120–$185 per slab
• Solid wood: Premium look, starts around $250 and can exceed $600
2. Size and Thickness
• Standard 6'8" x 2'6" is cheapest; oversized heights (8'+) raise material and framing costs by 20–40%
3. Finish Level
• Factory-primed costs less upfront but still requires paint on site
• Pre-finished doors arrive ready for install, saving labor but adding $40–$90 per unit
4. Hardware Selections
• Basic passage sets start at $12
• Designer levers, privacy locks, and soft-close hinges climb to $200+
5. Labor Complexity
• Retrofit in an existing opening: 0.65–1.1 labor hours
• New framed opening with trim: 1.5–2.2 labor hours
CountBricks aggregates invoice data from more than 2,000 U.S. suppliers. Houston pricing for a hollow core prehung door currently averages $214 installed, while the national mean is $236. Factor in travel, disposal, and local permit requirements, and the gap often closes. Our platform auto-adjusts for your ZIP code so your numbers stay precise.
• Material: 30 x hollow core prehung slabs at $93.45 = $2,803.50
• Hardware: Satin nickel levers at $18.20 each = $546.00
• Labor: 37 total hours at $54.75/hr = $2,026.–
• Consumables & disposal: $185.00
• Project management & markup: 12% = $664.62
Total project cost: $6,225.12
This live estimate was produced in 4 minutes using CountBricks voice capture on site and delivered to the client as a branded PDF with e-signature fields.
• Opt for factory-primed doors if you already plan a whole-house paint cycle
• Select split-jamb kits to reduce trim carpentry labor
• Bundle multiple openings so suppliers waive small-order freight upcharges
• Use CountBricks blueprint takeoffs to spot framing conflicts before install day
• Ordering doors before verifying rough opening sizes
• Forgetting to include casing upgrade costs in the estimate
• Underestimating labor for out-of-plumb walls in older homes
• Paying retail for hardware instead of leveraging CountBricks contractor pricing tiers
• Talk through the scope—our AI listens and builds the estimate in real time
• Instantly pull current material costs from partnered distributors
• Generate multiple option sets (good, better, best) with one voice command
• Send a polished quote straight from your phone or desktop
The cost of an interior door depends on materials, design choices, and local labor—but uncertainty should never be part of the equation. With CountBricks, residential contractors and homeowners see transparent pricing, faster approvals, and fewer change orders. Ready to sharpen your numbers? Explore the full toolset at CountBricks.com/services and start quoting smarter today.
When the Smiths decided to refresh their 1980s ranch, interior doors were low on their priority list—until they realized dated doors clashed with their new modern trim. They contacted CountBricks for an on-site voice estimate.
1. Replace 18 existing hollow core slabs with solid core MDF for sound privacy
2. Widen one bathroom entry to meet accessibility codes
3. Install soft-close hinges and matte black levers throughout
• Live Cost Comparison: Our estimator toggled between hollow and solid core in real time, displaying a $1,740 difference on screen so the Smiths could decide instantly.
• Automated Code Check: Blueprint takeoff flagged the narrow bathroom doorway, preventing a costly re-framing after inspection.
• Bulk Hardware Savings: By bundling all levers and hinges through CountBricks procurement, the Smiths saved 14% compared to big-box pricing.
Total Contract: $9,820 (solid core option chosen)
Projected Duration: 2.5 days with a two-carpenter crew
Change Orders: Zero—every variable captured upfront
• Early Data Wins: Capturing accurate door counts from blueprints prevents scope creep.
• Show Choices Visually: Real-time price toggles build client trust and speed approvals.
• Leverage Supplier Networks: CountBricks negotiated hardware discounts passed directly to the homeowner.
If you’re planning a similar upgrade, visit CountBricks.com/consultation to schedule a live demo. Our AI estimates aren’t just fast—they’re field-tested on homes like yours every day.
