Homeowners typically pay to rekey or replace locks to restore or upgrade security. The main cost drivers include lock type, number of locks, hardware quality, and labor time. Understanding the cost difference between rekeying and changing locks helps buyers choose the most economical option without compromising security.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Lock Rekey | $20 | $50 | $150 | Typically for standard pin-tumbler locks; includes key matching. |
| Lock Change (Cylinder/Hardware) | $100 | $250 | $500 | Includes new hardware; higher if smart or high-security locks. |
| Labor (Per Lock) | $40 | $100 | $250 | Prices vary by region and complexity. |
| Total Project (3 Locks) | $160 | $900 | $1,950 | Depends on method and hardware; assumes three standard doors. |
Overview Of Costs
Assumptions: region, number of doors, lock type, and labor hours. This section provides total project ranges and per-unit ranges to help buyers compare options quickly. Rekeying is usually cheaper upfront, while changing locks adds hardware costs but can improve security or accommodate different key systems. For a typical single-family home with three doors, the cost spread often falls within the ranges below.
Rekeying a standard door lock generally costs $20-$50 per lock, with labor totaling $40-$100. Changing locks with new hardware ranges from $100-$250 per lock, plus labor of $60-$150 per door depending on the installer and door type.
Cost Breakdown
Table shows major price components for each approach. The breakdown helps compare where money goes, from hardware to permits and disposal when applicable.
| Category | Rekey (per lock) | Change Lock (per lock) |
|---|---|---|
| Materials | Lock cylinders (basic) included in rekey if existing | New cylinders, strike plates, handlesets; higher for smart locks |
| Labor | $40-$100 | $60-$150 |
| Permits | None | Typically none for residential |
| Delivery/Disposal | None | Minimal for hardware leftovers |
| Warranty | Limited rekey warranty possible | New lock warranty often included |
| Taxes | Applicable | Applicable |
Factors That Affect Price
Key variables include lock type, number of doors, and security level. Specific thresholds matter: standard pin-tumbler vs. high-security or smart locks; number of doors and whether doors require alignment adjustments or add-ons (security pins, bump resistance, or weatherstripping). Longer runs or unusual door configurations also raise labor time and costs.
- Lock Type: Standard vs. high-security, smart locks often require more parts and programming.
- Number of Doors: More doors multiply both materials and labor.
- Existing Hardware: If existing hardware is in good shape, rekeying is cheaper; worn or damaged hardware increases change-out costs.
- Access Conditions: Hard-to-reach installs or multi-story homes raise labor time.
- Key System Compatibility: Rekeying to a new key system may require additional cuts or pins.
Regional Price Differences
Prices vary by region due to labor rates and supply costs. The same service can differ from city to rural areas. For a three-door job, expect regional deltas around +/- 15-25% compared with national averages.
Labor & Installation Time
Labor time directly impacts total cost, especially for complex door configurations. A straightforward rekey on three doors might take 1-2 hours, while changing locks on three doors with high-security hardware can stretch to 4-6 hours depending on door material and alignment needs.
Additional & Hidden Costs
Hidden charges can appear if parts or programming are required beyond standard service. Examples include trip fees, after-hours service, or programming for smart locks. Some technicians charge for key duplication or upgrading core components to match a new system.
Real-World Pricing Examples
Assumptions: three doors; standard hardware; residential service; regional variation considered. Three scenario cards illustrate common outcomes with different choices and constraints.
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Basic: Rekey three standard doors — labor 1.5 hours; per-lock $25-$40; total $180-$320.
data-formula=”labor_hours × hourly_rate”> - Mid-Range: Rekey three doors with upgraded pins — labor 2 hours; per-lock $40-$60; total $240-$420.
- Premium: Change locks on three doors with mid-range smart-compatible hardware — per-lock $150-$200; labor 2.5-4 hours; total $750-$1,200.