For construction professionals, knowing the labor cost to install interior door knobs is crucial. Typically, costs range from $25 to $65 per knob, depending on factors such as door condition and lock complexity. Accurate estimates help protect profit margins and ensure competitive bids.
• High-volume task: Most single-family builds average 15–25 interior doors.
• Perceived simplicity: Clients expect quick turnaround and low cost—accurate labor breakdowns protect your profit.
• Upsell potential: Hardware upgrades often lead to hinge, stop, and smart-lock add-ons.
Professional installers in the United States commonly charge between $25 and $65 per knob. Variables affecting this range include:
• Site location and prevailing wage requirements
• Door condition (pre-bored vs. solid core retrofits)
• Lock complexity (passage, privacy, or electronic smart latch)
• Quantity installed in a single mobilization
• Accessibility and travel time
1. Mobilization & setup – 5–10 minutes per unit
2. Existing hardware removal – 3–5 minutes
3. Bore adjustment or mortising – 2–8 minutes (if required)
4. Knob installation & alignment – 5–7 minutes
5. Strike plate fit & test – 2–4 minutes
6. Cleanup & client walkthrough – 3–5 minutes
Multiply those minutes by your crew’s loaded labor rate for a transparent, line-item cost. CountBricks automates this calculation.
Professionals should separate material allowance from install cost:
• Passage knob sets: $9–$35 each retail
• Privacy/bath sets: $15–$50 each retail
• Keyed entry or smart locks: $30–$250+ each retail
CountBricks pulls live supplier feeds to ensure accurate pricing.
With CountBricks, you can generate estimates quickly using voice AI. Simply state your requirements, and receive a branded PDF in minutes.
• AI voice capture eliminates manual data entry
• Real-time labor cost library calibrated to your ZIP code
• Automatic bundling of related tasks—hinges, stops, strike adjustments
• One-click change orders for smart locks
• Export to invoice with margin protection
• Set a minimum service fee—CountBricks recommends $125 per trip.
• Bundle multiple knobs at a tiered rate; for example, first knob at $65, each additional at $35.
• Flag older solid-wood doors for extra labor time.
Labor costs vary by region. For example, Nashville averages $42 per knob, while Denver is closer to $50. CountBricks adjusts rates based on Department of Labor indices.
• Miscounted doors: Blueprint AI takeoff counts doors and knobs automatically.
• Forgotten trip charges: Default templates insert your travel fee every time.
• Underestimating specialty hardware: Our catalog flags smart or biometric locks and updates labor minutes instantly.
A CountBricks contractor replaced 38 interior knobs during a full cosmetic upgrade. The AI adjusted labor estimates, preventing a $240 loss. The client approved quickly due to transparent line items.
• Keep a dedicated installation jig in your tool bag.
• Sort hardware by room before starting.
• Use painter’s tape to protect finished doors during drilling.
• Test latch engagement before installing screws fully.
• Photograph each finished knob for project records.
Create a free CountBricks account to streamline your door hardware installs. Visit CountBricks.com for more information.
Door knobs are part of a larger interior trim package. CountBricks helps you manage tasks like baseboard and casing installation efficiently.
1. Baseboard installation
2. Door casing install
3. Final paint touch-ups
4. Interior door knob installation
CountBricks auto-generates an optimized schedule and manpower curve.
• Average knobs per hour: 7.4 with an apprentice/helper team
• Rework rate using CountBricks checklist: below 2%
• Typical material waste: under 1% thanks to live inventory sync
The builder used CountBricks for a spec home, achieving a 38% gross margin. The AI recognized smart locks and adjusted labor estimates accordingly.
• Log in to CountBricks.com and request your residential task library.
• Use the voice assistant on site to capture every hardware change order instantly.
• Compare our regional labor benchmarks to your crew’s historical data.
CountBricks turns door knob installation into a streamlined, profitable line item.
