Changing house locks typically costs $75-$250 per lock for a standard replacement, or about $250-$900 for several exterior doors. The locks changed on house cost depends on the lock type, number of doors, labor, and whether the existing hardware needs repair or replacement.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Standard lock replacement | $75 per lock | $150 per lock | $250 per lock | Hardware and routine installation |
| Three exterior locks | $225 | $450 | $750 | Standard deadbolts or entry locks |
| Smart lock replacement | $180 per lock | $325 per lock | $600 per lock | Price varies by features and door fit |
| Rekey existing lock | $20 per cylinder | $35 per cylinder | $60 per cylinder | Usually cheaper if hardware works |
What homeowners pay to change standard house locks
A single standard deadbolt or entry lock replacement usually totals $75-$250, including a basic lock and routine locksmith labor. A home with three exterior doors commonly costs $250-$750; replacing five locks may run $400-$1,200 when hardware quality, door adjustments, or multiple lock types raise the bill.
For a typical three-door home, budgeting about $450 is a reasonable starting point. That estimate assumes standard keyed locks, accessible doors, no broken hardware, and regular weekday service. A matching set of builder-grade locks generally costs less than individually selected high-security models.
Hardware alone ranges from about $20-$80 for a basic deadbolt, $40-$150 for a quality keyed entry set, and $100-$350 for many smart locks. Professional installation often adds $50-$125 per lock, though some locksmiths charge a service-call minimum rather than a separate fee for each door.
Assumptions: U.S. metro-area pricing, standard residential doors, ordinary access, and no emergency or code-related work.
How hardware, locksmith labor, and service fees shape the quote
Quotes may bundle the visit, labor, and hardware or list each charge separately. Asking what the quoted total includes helps reveal whether the lock itself, travel, disposal, and door adjustments are covered.
| Quote item | Typical range | Common pricing basis | What changes the charge |
|---|---|---|---|
| Basic deadbolt hardware | $20-$80 | Per lock | Finish, brand, security grade |
| Keyed entry hardware | $40-$150 | Per lockset | Handle style and matching trim |
| Locksmith labor | $50-$125 | Per lock or task | Fit, door condition, number of locks |
| Service call | $50-$100 | Per visit | Travel distance and company minimum |
| Door or strike adjustment | $25-$150 | Per door | Misalignment, enlarged holes, damaged frame |
| Old lock disposal | $0-$25 | Per job | Often included in installation |
For a straightforward installation, the labor portion may be $50-$100 per lock, with a separate service call of $50-$100. If the locksmith can change several locks in one visit, labor per lock may fall, but the trip minimum still applies.
Confirm whether the estimate is a per-lock price or a total visit price. A $90 service-call minimum plus $60 labor per lock can be more expensive for one door than a package quote, but may be economical for four or five locks.
Door thickness, lock grade, and smart features that raise prices
The largest price differences usually come from hardware choice and how well the new lock fits the existing door. Standard residential doors are commonly 1 3/8-1 3/4 inches thick. A nonstandard thickness, damaged bore, or misaligned latch can require compatible hardware or extra fitting, adding roughly $25-$150 per door.
Basic deadbolts can cost $20-$80, while higher-security models often cost $80-$250 or more before installation. Drill-resistant cylinders, reinforced strike plates, restricted keyways, and higher security ratings add expense. A premium lock does not automatically make a weak door frame secure; the frame and strike plate also matter.
Smart locks often cost $100-$350 for hardware and another $75-$200 for installation, putting a typical installed price around $180-$550. Wi-Fi connectivity, keypad access, auto-locking, and compatibility with a home system affect the device price. If a smart lock needs a new bore, wiring, or a door adjustment, the installation can exceed that range.
Scope also matters. Replacing a deadbolt while keeping the existing handle is usually cheaper than replacing an entire entry set. Matching locks to one key can add about $5-$20 per cylinder, depending on the locksmith and hardware. Before buying, check the door thickness, backset, and existing hole size to avoid paying for a second fitting visit.
How much do after-hours visits and complex installations add?
Routine residential work often takes 20-45 minutes per lock when the door and existing holes are in good condition. A locksmith may complete three standard locks in roughly 1-2 hours, plus travel and setup. Replacing a full entry set, correcting a sagging door, or working with a damaged cylinder can extend the visit.
After-hours, weekend, and holiday appointments may add $50-$200 or increase the labor rate by 25%-100%. A same-day emergency call can total $150-$400 before premium hardware, especially when the job involves a late-night dispatch or a long travel distance. Confirm the total call-out charge before authorizing work.
Some doors need a new strike plate, longer screws, frame repair, or a larger bore. Minor adjustments may add $25-$75; more involved wood or metal work can add $100-$300 or require a separate trade. Ask the locksmith to identify any extra work and its price before drilling or modifying the door.
Regional lock replacement prices from rural areas to major cities
Labor rates and travel charges differ by market. In rural areas and smaller towns, standard installation may run 10%-20% below a national metro-area estimate, though longer travel distances can offset the savings. Suburban pricing is often near the middle of the range, while dense urban markets may be 10%-30% higher because of operating costs and demand.
For a three-lock standard replacement estimated at $450 in a typical market, a rural quote might be roughly $360-$405 before unusual travel fees. In a high-cost city, the same scope could reach $495-$585, with premium hardware or urgent service adding more. These are comparison ranges, not fixed regional tariffs.
Weather and scheduling can influence availability more than the lock price itself. A lockout, break-in, or move-in deadline may prompt an immediate dispatch charge, while a flexible weekday appointment makes it easier to compare providers. Compare total installed quotes from local locksmiths rather than comparing hardware prices alone.
Three realistic house lock quotes for different project sizes
A one-door replacement is the smallest common job. For one standard deadbolt, a basic lock may cost $35, labor $65, and a service call $65, bringing the total to about $165. A sturdier lock or door adjustment can move the quote toward $225-$300.
A three-door project might include two deadbolts and one keyed entry set. Hardware could total $190-$350, labor $150-$300, and one service call $50-$100. A typical total is $390-$750, or about $130-$250 per lock including the shared visit fee. The lower end assumes standard hardware and easy installation.
A four-lock smart upgrade has a different budget. Four devices at $150-$300 each cost $600-$1,200; installation at $75-$175 per door adds $300-$700. Expect roughly $900-$1,900 before replacing damaged doors or adding network equipment. A quote should specify whether setup, keypad programming, and app pairing are included.
Compare projects by scope and included work, not just the final number. A lower quote may omit hardware, rekeying, door adjustment, or tax, while another may include upgraded locks and a single trip charge.
Rekeying versus replacing locks when the hardware still works
Rekeying changes the internal pins so old keys no longer operate the lock, while keeping the existing hardware. It commonly costs $20-$60 per cylinder, plus a possible $50-$100 service-call minimum. Rekeying three compatible locks in one visit may total about $100-$250, depending on the provider and keying arrangement.
Replacing the lock makes more sense when the cylinder is damaged, the hardware is worn, the desired key system is incompatible, or the homeowner wants a different style or security feature. A standard replacement often costs $75-$250 per lock installed. A locksmith can sometimes rekey new locks alike, but the keying charge should be included in the estimate.
After moving into a home, rekeying can be a lower-cost option if all exterior locks are in good condition and compatible. Following a break-in, a damaged lock or door frame may need replacement or repair instead. Ask whether every exterior cylinder can be keyed to one new key before choosing between rekeying and replacement.
Ways to lower a house lock change bill without cutting security
Bundle several locks into one appointment. A single trip charge spread across three or four doors usually costs less per lock than separate visits. Provide the number of doors, lock types, photos, and any known fit problems when requesting a quote so the locksmith can estimate hardware and labor more accurately.
Choose a quality standard deadbolt when smart access or premium key control is not needed. Avoid replacing a complete handle set if only the deadbolt is worn, and do not pay for matching finishes on interior hardware unless appearance matters. For functioning locks, compare rekeying against replacement before ordering new hardware.
Schedule during regular business hours when possible and prepare the work area by clearing furniture or stored items around each door. Do not enlarge holes or disassemble a lock unless qualified; incorrect prep can damage the door and increase labor. Request an itemized quote that separates hardware, labor, service call, and any adjustments.
The most dependable savings come from combining doors, controlling the hardware scope, and confirming the full installed price in advance. A low advertised service fee may not include the trip minimum or materials, so ask for a written total and approval rules for extra work.