The humble interior door knob might seem minor, yet its installation cost ripples through a residential project’s timeline, budget, and finish quality. Homeowners want fair pricing, while builders and remodelers need predictable margins. CountBricks bridges both interests by delivering instant, AI-driven numbers that reflect current labor rates, material pricing, and local codes.
• Basic replacement of a single passage knob in an existing bore: $40 – $65 per door
• Privacy or keyed knob requiring strike plate alignment and testing: $55 – $95 per door
• New install in a blank slab, including drilling the bore and latch hole: $85 – $130 per door
• Standard passage knob in satin nickel: $12 – $18 each
• Privacy set with thumb-turn lock: $18 – $35 each
• Decorative or smart privacy lever: $75 – $160 each
• Door slab thickness outside 1-3/8ʺ requires specialty latch: +$10 per door
• Fire-rated knob sets for attached garages: +$20 – $35 per door
• Disposal of old hardware: +$2 – $5 per door
• Quantity: Installing ten knobs at once lowers per-unit labor by 10-20 %
• Door material: Solid core MDF takes longer to bore than hollow core, adding about $15 per door
• Hardware grade: Builder grade knobs install faster than multi-piece designer hardware
• Site conditions: Occupied homes require dust containment and cleanup time
• Urgency: Same-day service can raise labor by 25 %
• Tool investment: A professional hole saw kit costs $40-$80, wiping out the DIY savings on a single door
• Fit and finish: Misaligned latches lead to callbacks and repainting door edges
• Time value: Swapping five privacy knobs can steal an entire weekend; CountBricks pros finish in under two hours and clean up afterward
1. Speak your scope into the CountBricks mobile app: “Replace six interior privacy knobs and install one new keyed knob.”
2. Our AI instantly references local labor rates, today’s material pricing, and project complexity.
3. A detailed line-item estimate appears on your screen in seconds and is archived in your CountBricks.com dashboard.
4. Need drawings? Upload a PDF plan, run an AI takeoff, and watch the door schedule populate automatically.
Because the numbers update continuously, builders avoid profit-eating surprises when the invoice is generated weeks later.
• Standardize finishes: Choosing one style and finish for every interior knob reduces order fragmentation and waste
• Batch installations: Schedule all door hardware for the same day so your installer isn’t making multiple trips
• Keep spare latch plates on hand: Minor door warps can be solved with an alternate plate instead of re-boring the jamb
• Leverage CountBricks’ material bundles: Our AI flags volume discounts automatically and applies them to your quote
CountBricks recently supported a four-bedroom renovation where 18 privacy knobs and 3 keyed knobs were installed. The AI estimate pegged labor at $1,560 and materials at $630. Actual invoice? $1,565 labor and $628. Precision within 0.6 % impressed both homeowner and GC, cementing an ongoing partnership.
Speak, tap, or click—CountBricks meets you where you work. Generate a live interior door knob installation cost, send a branded quote to the homeowner, and schedule field crews without leaving the app. Visit CountBricks.com/services to see how easy accurate estimating can be.
While a single home might require a dozen interior knobs, multi-unit developments can involve hundreds. Traditional spreadsheet workflows crumble under that volume, but CountBricks thrives on it.
1. Upload the architectural set to your CountBricks.com dashboard.
2. The AI blueprint engine auto-detects door symbols, counts units per floor, and categorizes passage, privacy, and keyed hardware.
3. Voice-confirm finishes—“brushed chrome passage, matte black privacy”—and receive consolidated material lists with contractor-grade pricing.
4. Generate phased schedules so your trim carpenters know exactly which doors to prep each week.
• Consistency: Every unit receives identical hardware heights and bore locations, eliminating warranty calls.
• Bulk savings: CountBricks negotiates volume pricing that single-project orders rarely unlock.
• Real-time updates: If the supplier hikes price mid-project, your forecast adjusts instantly, protecting profit margins.
CountBricks supported a 24-unit townhome build requiring 312 interior knobs. The AI takeoff reduced manual counting from two days to under 15 minutes. Material savings totaled 8 %, and zero rework was reported at final punch-out. The superintendent now uses CountBricks on every trim-out phase, citing “budget certainty and paperwork that writes itself.”
Ready to experience the same efficiency? Start your complimentary project upload at CountBricks.com/portfolio and let our AI show you exactly what each interior door knob installation will cost—before a single hole is drilled.
