The typical cost to replace a door knob and deadbolt combines hardware price with labor and any minor installation adjustments. Main cost drivers include the type of hardware, single or double cylinder, existing door prep, and whether additional security features are added. This guide provides practical price ranges in USD and clarifies what affects the final bill.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Door knob hardware | $15 | $60 | $250 | Basic to premium styles |
| Deadbolt hardware | $20 | $70 | $300 | Single vs double cylinder |
| Labor (install) | $40 | $120 | $260 | Per door, varies by region |
| Misc. materials | $5 | $15 | $40 | Screws, strike plates, latch |
| Total project (one door) | $80 | $265 | $850 | Assumes standard prep |
Overview Of Costs
Typical costs for replacing a door knob and deadbolt include hardware plus installation labor. The lowest end covers basic hardware and quick swap with existing latch alignment. The average range reflects mid tier hardware and standard door prep. High end includes premium locking systems and minor door adjustments. Assumptions: single door, standard thickness, and no structural work.
Cost Breakdown
| Components | Low | Average | High | Notes |
|---|---|---|---|---|
| Materials | $35 | $120 | $380 | Knob and deadbolt set, strike plate |
| Labor | $40 | $120 | $260 | Installation per door; includes adjustments |
| Hardware Options | $15 | $60 | $250 | Basic through smart lock |
| Permits & Misc | $0 | $5 | $20 | Typically none required for interior doors |
| Delivery/Disposal | $0 | $10 | $25 | New parts and packaging |
| Subtotal | $90 | $315 | $935 | All-in costs before tax |
| Taxes | $0 | $15 | $60 | Location dependent |
| Total | $90 | $330 | $995 | Tax included where applicable |
Assumptions: region, specs, labor hours.
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What Drives Price
Hardware quality, lock type and door prep are the primary price drivers. Material strength, such as hardened steel or brass finishes, raises cost. Smart locks add connectivity and battery maintenance as ongoing expenses. If the door requires drilling, mortising, or alignment to prevent sticking, labor costs climb. SEER or tensioned strike plates are rarely needed for simple interior doors but can appear in exterior applications.
Ways To Save
Shop around, reuse existing holes when possible, and install standard hardware to reduce cost. Opting for mid-range hardware with a dependable brand often balances reliability and price. If the existing door is misaligned, address alignment first to avoid unnecessary replacement parts. DIY installation can reduce labor but may void warranties if not done to spec.
Regional Price Differences
Prices vary by region due to labor markets and material availability. In urban coastal areas, labor tends to be higher than in rural inland zones. Suburban markets often sit between urban and rural rates. Typical regional deltas are about ±15% to ±25% compared with national averages, depending on demand and competition.
Labor, Hours & Rates
Labor generally runs $40 to $120 per door for standard installs. More complex jobs or high security hardware can push this to $150–$260. Time to install is usually 0.5 to 2 hours per door, with additional time if door prep or strike alignment is required. data-formula=”labor_hours × hourly_rate”>
Additional & Hidden Costs
Hidden costs include misaligned doors requiring re-surfacing, new strike plates when misfitting, and warranty extension fees for premium smart locks. Some landlords or HOA rules may require specific grade locks, adding to price. For exterior doors, weather sealing and deadbolt security features can add $20–$60 on top of hardware costs.
Real-World Pricing Examples
Three scenario cards provide practical expectations for a typical replacement project.
- Basic — Standard exterior door, basic knob and single cylinder deadbolt, light labor. Specs: standard 1-3/8 to 1-3/4 inch door, stainless finish. Labor 0.5–1 hour. Per-unit: hardware $25–$60, labor $40–$80. Total $85–$180. Assumptions: no drilling; existing holes align.
- Mid-Range — Mid-tier hardware with enhanced finish and a deadbolt with anti-pick features. Specs: 2-1/8 inch bore, rekeyable. Labor 1–1.5 hours. Per-unit: hardware $60–$140, labor $90–$150. Total $170–$340. Assumptions: minor door adjustment.
- Premium — Premium smart lock with mechanical backup, upgraded strike, and reinforced hardware. Specs: multi-point or high security deadbolt, backlit keypad. Labor 1.5–2 hours. Per-unit: hardware $180–$350, labor $120–$260. Total $300–$610. Assumptions: new wiring for smart lock, exterior weather seal assessment.
Assumptions: region, specs, labor hours.
