When deciding between rekeying existing locks or replacing them, buyers typically weigh cost alongside security implications. The price range for rekeying and for changing locks varies by lock type, number of cylinders, and labor. This article breaks down the cost to help compare the price and make a budgeted decision.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Rekeying a standard residential lock (per lock) | $40 | $75 | $150 | Includes service visit and pin change. |
| Changing a standard residential lock (per lock) | $120 | $200 | $350 | Includes new hardware and installation. |
| Rekeying smart lock (per device) | $80 | $150 | $250 | May require app setup. |
| Replacement of all exterior locks (3-4 doors) | $350 | $700 | $1,200 | Includes hardware and labor. |
Exact price ranges for rekeying versus changing locks
Rekeying typically costs less per lock than replacing it, with a typical per-lock range of $40-$150. A common residential scenario is rekeying 2-4 existing knobs or deadbolts after a move or after a roommate vacancy. In contrast, changing locks (installing new deadbolts or smart locks) generally runs $120-$350 per door, depending on hardware quality and whether a professional installs both exterior and interior hardware.
| Scenario | Low | Average | High | Notes |
|---|---|---|---|---|
| 2 standard deadbolts (rekey) | $80 | $150 | $300 | Includes basic service call. |
| 2 standard deadbolts (replace) | $240 | $350 | $700 | Hardware upgrade may add cost. |
| Smart lock installation (2 doors) | $180 | $320 | $600 | Includes installation and app pairing. |
Key cost components in a lock decision
Costs break down into four main parts: Materials, Labor, Hardware, and Service Fees. Materials cover the lock body or rekey pins; Labor accounts for onsite work; Hardware includes strike plates and screws; Service Fees may include travel and diagnostic time.
| Component | Low | Average | High | Impact on total |
|---|---|---|---|---|
| Materials (lock body) | $40 | $120 | $250 | Drives per-lock cost for replacement. |
| Labor | $25 | $70 | $150 | Time-based; 0.5-2 hours typical. |
| Hardware & fittings | $15 | $40 | $100 | Strike plate, screws, trim. |
| Permits or inspections | $0 | $0-$50 | $150 | Rare for standard residential. |
| Delivery/Trip charges | $0 | $20 | $60 | If service area is remote. |
Which variables most affect the final price
The final quote changes with door type, number of cylinders, and current hardware. Key drivers include the door material (wood vs metal), lock type (standard deadbolt vs smart lock), and region labor rates. For example, replacing all exterior doors on a single-family home will cost more in dense urban areas than in rural zones.
| Driver | Typical effect | Examples | Range adjustment |
|---|---|---|---|
| Door type | Material strength and fit | Solid wood vs steel | Wood often cheaper to install than steel. |
| Lock type | Complexity of mechanism | Mechanical deadbolt vs smart lock | Smart locks add connectivity costs. |
| Number of doors | Volume discount vs complexity | 2-4 doors | Per-door cost decreases with scale. |
| Region | Labor rate variance | Midwest vs West Coast | Regional differences can be 15-30%. |
How to cut the price without compromising security
Careful scope control and timing matter. Choose rekeying over replacement when the existing hardware is sound and color-matched; schedule during off-peak hours to reduce labor rates. Compare quotes from multiple pros to verify labor estimates and avoid unnecessary upgrades.
| Strategy | Expected impact | Notes |
|---|---|---|
| Rekey existing locks | Lower total cost | Requires compatible hardware. |
| Keep current cylinders if compatible | Smaller upfront expense | Security assessed after rekey. |
| Batch work for multiple doors | Possible discount | Ask for per-door bundled pricing. |
| Avoid premium hardware | Save upfront | Balance with desired security level. |
Regional price patterns you should expect
Prices shift with local demand and wages. Coast regions often show higher labor rates than the Midwest for lock work. A typical per-door rekey might sit near $70 in a lower-cost area versus $120 in a high-cost metro, while full lock replacement can vary by $100-$150 per door depending on availability and installer proximity.
Per-unit pricing insights for common setups
Most homes with 2-4 exterior doors fit common pricing tiers. Per-door replacement often ranges $180-$350, while rekeying sits around $60-$130 per door, excluding any smart features.
| Setup | Low | Average | High | Notes |
|---|---|---|---|---|
| Two mechanical deadbolts (replace) | $240 | $350 | $700 | Hardware quality depends on finish. |
| Two mechanical deadbolts (rekey) | $80 | $130 | $260 | Pins and cores altered. |
| Two smart locks (install) | $180 | $320 | $600 | Includes app setup. |
How labor time reshapes the final bill
Labor is a major component when you change locks. A typical swap or rekey on a standard door takes 0.5-1.5 hours per door, influencing total charges through hourly rates.
| Labor hours (per door) | Hourly rate | Labor cost | Notes |
|---|---|---|---|
| Rekey | $60 | $60-$120 | Includes on-site pins and key matching. |
| Replace (mechanical) | $60 | $120-$210 | New latch and cylinder alignment. |
| Replace with smart lock | $60 | $180-$260 | Programming and app pairing adds time. |
In practice, homeowners facing a move or a security change should compare a rekey plan against a full replacement plan, considering both upfront costs and long-term reliability.