Last updated July 25, 2026
How Long Does Lock Installation & Rekey Take? Timelines and What to Expect
A standard rekey takes 10 minutes per cylinder. The other 40 minutes of your appointment window is discovery time. In our 42 years serving Los Angeles, we’ve learned that timelines go sideways not because the work is complicated, but because someone before the current homeowner installed the wrong hardware, stripped the screws, or ignored a door that had settled half an inch. This guide walks you through real benchmarks, the hidden variables that extend jobs, and how to eliminate surprises before you pick up the phone. For more on what to expect, see How Long Does Residential Locksmith Take? Timelines and What to Expect.
Quick Answer
Most residential rekeys take 20-40 minutes total for a single-family home with 2-4 cylinders. A straightforward deadbolt swap runs 30-45 minutes per door. Full exterior hardware replacement, including smart lock retrofits, typically requires 1-2 hours. The actual lock work is predictable. What stretches these windows is what the technician finds: non-standard backsets, damaged strike plates, or discontinued hardware that no longer matches.
Table of Contents
- Baseline Time Benchmarks by Job Type
- The Five On-Site Discoveries That Extend Every Timeline
- How to Pre-Qualify Your Hardware Before Calling
- What Flat-Price Quotes Actually Protect You From
- Same-Day Availability in Los Angeles: Realistic Windows
- Smart Locks and Special Cases
- Common Mistakes to Avoid
- When to Call a Professional
- Frequently Asked Questions
Baseline Time Benchmarks by Job Type
These are the numbers we quote on the phone at Strongbox Lock & Safe Co. home. They assume standard residential door prep, no surprises, and hardware that was installed correctly the first time.
Rekeying: 10 Minutes Per Cylinder
Rekeying - changing the internal pin configuration so old keys no longer work - is the most predictable service we offer. A single cylinder (one keyhole) takes roughly 10 minutes of hands-on work. A typical Los Angeles home built between 1960 and 1990 has a front door deadbolt and knob set, plus a back or side door, totaling 3-4 cylinders. That’s 30-40 minutes of actual labor.
What adds time: removing hardware that was over-tightened, extracting broken keys, or discovering that a previous owner already rekeyed with non-standard pins. We’ve seen original Baldwin hardware from a 1970s Brentwood ranch hold up beautifully. We’ve also seen bargain cylinders from a 2010 flip in Boyle Heights fail after three years.
Deadbolt Swap: 30-45 Minutes Per Door
Our Lock Installation & Rekey services handle replacing a deadbolt with new hardware of the same brand and footprint, which moves quickly. Cross-brand swaps - say, replacing an old Kwikset with a Medeco high-security deadbolt - take longer because the faceplate dimensions, strike plate location, and cylinder length rarely align perfectly.
Full Exterior Hardware Replacement: 1-2 Hours Per Door
This includes removing knob, deadbolt, and strike hardware, repairing or replacing the door prep, and installing new components. Homes in Los Angeles hillside neighborhoods like Laurel Canyon or Mount Washington often have thicker exterior doors, sometimes 2¼ inches or more, requiring extended backsets or special ordered hardware.
Smart Lock Retrofit: 45 Minutes to 2.5 Hours
Smart locks add electrical and connectivity variables. Yale Assure locks with Wi-Fi modules require app setup, firmware updates, and homeowner training. The physical install might be 40 minutes. The technology integration often doubles that. We schedule these appointments with buffer time built in.
| Job Type | Baseline Time | Common Extension |
|---|---|---|
| Rekey (per cylinder) | 10 minutes | +10 min if hardware stuck |
| Deadbolt swap (same footprint) | 30-45 minutes | +20 min if cross-brand |
| Full hardware replacement | 1-2 hours | +30 min if door prep damaged |
| Smart lock retrofit | 45 min - 2.5 hours | +30 min for tech setup/training |
The Five On-Site Discoveries That Extend Every Timeline
We arrive at a home in Los Angeles expecting one thing and find another. Here are the five discoveries that turn a 30-minute rekey into a 90-minute job, ranked by how often we encounter them.
1. Wrong Backset Measurement
The backset is the distance from the edge of the door to the center of the cylinder hole. Standard is 2⅜ inches or 2¾ inches. Pre-1950s homes in Los Angeles neighborhoods like West Adams or Highland Park sometimes have 5-inch backsets or non-standard placements. When the hardware doesn’t match, we either modify the door or special-order hardware. Either way, the timeline shifts.
2. Non-Standard or Aftermarket Cylinders
Previous owners sometimes install hardware from big-box stores that uses proprietary cylinders not compatible with standard rekeying equipment. We’ve encountered off-brand cylinders in Venice bungalows and Downtown lofts that require complete replacement because no pinning kit matches them.
3. Damaged or Misaligned Strike Plates
Los Angeles climate cycles - hot dry summers, occasional heavy winter rains - cause wood door frames to expand and contract. A strike plate that worked in March may not align by October. The deadbolt won’t extend smoothly. The “fix” is often re-mortising the strike or shimming the hinges, neither of which was on the original work order.
4. Doors That Have Settled or Warped
Hillside homes in the Hollywood Hills or Pacific Palisades are particularly prone to this. Foundation movement shifts door frames. A door that latches but requires lifting or shoving indicates misalignment. Installing new locks on a misaligned door guarantees callbacks. We correct the alignment first, which adds time but eliminates future problems.
5. Discontinued Hardware with No Direct Replacement
Some Los Angeles homes still have original hardware from the 1920s-1950s, particularly in historic districts like Angelino Heights. When these fail, there is no modern equivalent with identical hole spacing. We sometimes fill and re-drill doors, or source specialty reproduction hardware. This is the most timeline-variable scenario we face.
How to Pre-Qualify Your Hardware Before Calling
You can eliminate most surprises with a five-minute inspection. This protects the flat price we quote on the phone and ensures the technician arrives with the right equipment.
- Photograph the front and edge of each door. Show the full faceplate, any brand markings, and the door edge where the latch extends. Text these to us when you call.
- Measure your backset. Open the door. Measure from the edge to the center of the cylinder hole. Standard is 2⅜” or 2¾”. Anything else, mention it immediately.
- Test every lock with its key. Note any that stick, require jiggling, or only work from one side. These symptoms predict internal wear or alignment issues.
- Check for brand names. Kwikset, Schlage, Baldwin, and Yale mark their hardware clearly. Unmarked or store-brand hardware often means non-standard internals.
- Note door thickness. Standard is 1⅜” (interior) or 1¾” (exterior). Thicker doors require special hardware or extensions. Common in custom Los Angeles homes.
When you call Strongbox with this information, we quote a price that holds. No “starting at” language. The price on the phone is the price on the invoice.
What Flat-Price Quotes Actually Protect You From
The locksmith trade in Los Angeles is saturated with $19 service call advertising. What arrives is typically a subcontractor who quotes a low arrival fee, then invoices for undisclosed labor rates, “emergency” surcharges, and hardware marked up 300%.
Our flat-price model works differently. We ask questions before the truck rolls. We factor in door thickness, hardware brand, and neighborhood access. If you pre-qualified your hardware using the steps above, we know what we’re walking into. The quote covers the complete job, not a starting point.
What this protects you from:
- Technicians who discover “unexpected complications” and multiply the bill
- Hardware swaps mid-job with no price confirmation
- After-hours surcharges disguised as standard practice
- Pressure to upgrade to “better” locks at inflated prices
We’ve been in Los Angeles for over 42 years. We plan to be here in thirty more. That only works if every customer gets a square deal.
Same-Day Availability in Los Angeles: Realistic Windows
Los Angeles geography and traffic patterns shape what “same day” actually means. We answer every call with a live person, 24/7, including nights, weekends, and holidays. But getting a technician to your door depends on where you are and when you call.
Morning Calls (7 AM - 11 AM)
Best availability. Our technicians start from depots in the San Fernando Valley and Mid-City. Morning appointments in Studio City, Sherman Oaks, Culver City, or Mid-Wilshire typically see 1-2 hour windows. Downtown and Westside calls before 10 AM usually secure morning slots.
Midday Calls (11 AM - 3 PM)
Traffic compression extends windows. Crossing the 405 or 101 during midday can add 30-45 minutes to transit. We quote realistic arrival times rather than optimistic ones. If you’re in Santa Monica and our tech is finishing in Silver Lake, we’ll tell you 2-3 hours, not “soon.”
Afternoon and Evening Calls (3 PM - 8 PM)
Peak demand period. Lockouts, in particular, cluster here. We maintain emergency capacity, but non-urgent installs and rekeys may schedule next-day. If your need is security-sensitive - keys lost, break-in, domestic situation - we prioritize and adjust.
Overnight and Holidays
Emergency lockout response continues. Scheduled non-emergency work typically moves to the next business morning. Our Residential Locksmith in Los Angeles page details full service categories.
Neighborhoods with gated communities or limited parking - Bel Air, parts of Malibu, hillside enclaves - require additional buffer time for access coordination.
Smart Locks and Special Cases
Smart lock installations introduce variables that mechanical locks don’t. We install and service Yale, Schlage, Kwikset, and other major smart lock brands, but we always set expectations clearly.
Wi-Fi connectivity in Los Angeles varies by construction. Stucco and wire lath, common in 1940s-1970s homes, attenuate signals. If your front door is far from your router, we may recommend a Wi-Fi extender or a Z-Wave hub-based lock rather than a direct-connect model.
Battery life in hot climates is shorter than manufacturer estimates. Los Angeles summer temperatures above 90°F accelerate battery drain in outdoor smart locks. We discuss this during installation and recommend lithium batteries for longer life.
For Commercial Locksmith in Los Angeles clients, we handle access control systems, keycard installations, and master key systems with correspondingly longer timelines - typically half-day to full-day appointments depending on door count.
Common Mistakes to Avoid
- Buying hardware online before measuring. That “standard” deadbolt from a major retailer may not fit your 2¼-inch thick vintage door. Measure first, buy second - or let us supply hardware sized correctly.
- Ignoring sticking locks as “just old.” A lock that requires jiggling usually indicates internal wear or door misalignment. Waiting until it fails entirely often means emergency rates and potential door damage.
- Rekeying without checking all cylinders. Homeowners sometimes forget side doors, garage-to-house doors, or window locks. We inventory every access point during our visit, but mentioning them when you call ensures accurate quoting.
- Choosing smart locks based on app reviews alone. App quality and hardware durability are separate issues. We’ve replaced failed smart locks in Los Angeles homes where the app worked fine but the motor or clutch mechanism failed within two years.
- Attempting DIY on high-security locks. Medeco, Mul-T-Lock, and Abloy cylinders have proprietary pinning systems and often security features that resist standard tools. Amateur disassembly usually destroys the cylinder and voids warranty.
- Not verifying technician identity. Every Strongbox technician is background-checked, uniformed, and presents ID at your door. If you use another service, demand the same. The person who opens your locks should be the most verifiable person you hire.
When to Call a Professional
Call when security has changed: new home purchase, lost or stolen keys, roommate or tenant departure, contractor access that wasn’t recovered. Call when function degrades: sticking, grinding, or keys that work intermittently. Call after any break-in attempt, even if the lock still operates.
Strongbox Lock & Safe Co. offers free estimates in Los Angeles. Call (877) 664-8139, speak to a live person, and we’ll walk through your situation. If you can send photos of your hardware, we’ll quote a flat price before any truck rolls. Our Automotive Locksmith in Los Angeles team handles parallel services for vehicles.
Frequently Asked Questions
A standard single-family home with 3-4 cylinders takes 20-40 minutes of actual work. The full appointment, including inspection and testing, runs 45-60 minutes. Call (877) 664-8139 for a flat quote - estimates are free.
Yes, for calls placed before 2 PM in most neighborhoods. Afternoon calls may schedule next-day depending on location and current demand. Emergency lockout response is available 24/7 with a live person answering every call.
Rekeying is faster when hardware is sound and you want the same locks with new keys. Replacement is necessary when hardware is worn, damaged, or you want upgraded security. We assess on arrival and quote both options flat-price before work begins.
Probably because they quoted low to get in the door, then manufactured complications. Or they genuinely found stripped screws, wrong backsets, or non-standard hardware. Our flat-price quotes factor in discovery time - no surprises, no escalation.
Yes, for residential work. We require the homeowner or authorized representative present to approve any changes and receive keys. Commercial clients may designate authorized staff. Every technician shows ID at the door for verification.
Not when done correctly. We evaluate vintage Baldwin, Yale, and other quality hardware before disassembly. Some 1920s-1950s mechanisms require special handling. If preservation is your priority, tell us when you call - we’ll assign our most experienced technician.
The Bottom Line
Lock installation and rekeying timelines are predictable when you control the variables. The work itself is straightforward: 10 minutes per cylinder, 30-45 minutes per deadbolt swap, 1-2 hours for full replacement. What extends these windows is discovery - wrong hardware, damaged prep, settled doors, discontinued parts. Pre-qualify your doors using the five-step inspection above, demand flat-price quoting, and verify who you’re letting into your home. Browse more guides & resources on protecting your home and schedule. In a trade plagued by bait-and-switch operators, these habits protect both your schedule and your wallet.
Written by the team at Strongbox Lock & Safe Co., serving Los Angeles since 2013.