Fast, Reliable Lock Installation & Rekey Across Lexington
Lock installation and rekeying in Lexington, MA typically runs $140-$380 for standard residential work, with same-day scheduling available throughout the 02420 and 02421 ZIP codes. Our technicians cover the full span of Lexington’s distinctive housing landscape, from the pre-Revolutionary colonials ringing the Battle Green to the mid-century ranches off Marrett Road and the newer custom builds near Route 128. Call (877) 664-8139 for a flat price before we roll - no bait, no switch, no surprises on the invoice.
We’ve been serving Lexington homeowners for decades, and we know this town’s locks present challenges you won’t find in Arlington or Burlington. The antique mortise hardware still guarding many Massachusetts Avenue doorways requires a different skill set entirely from the Grade-1 high-security cylinders tech executives want installed in their modern homes. Our Lock Installation & Rekey team handles both ends of that spectrum daily. Whether you need a smart lock retrofitted to a 200-year-old door frame or a Medeco cylinder rebuilt after a January freeze, we arrive prepared.
Why Strongbox Lock & Safe Co. Is Lexington’s Preferred Lock Installation & Rekey Company
Lexington homeowners know the difference between a locksmith who carries antique mortise parts and one who shows up with only modern knob-sets on the truck. We’ve built our reputation here by being the former. Gil Navarro established Strongbox Lock & Safe Co. on the principle that every job gets done right and backed in writing - no arguing, no extra paperwork. That was over 42 years ago, and we still operate by the same standard.
Our Lexington customers call us back because we quote a real price on the phone and it matches the invoice exactly. No $19 dispatch fee that balloons to $400. No subcontractor whose background you can’t verify. Our technicians are uniformed, background-checked, and present company ID at your door on every visit. We answer our own phones, 24/7, including nights, weekends, and holidays. A live person, every time.
We know Lexington’s streets well enough to give accurate arrival windows. From the Battle Green historic district to the neighborhoods off Waltham Street and the newer developments near the Burlington line, our response time to Lexington averages under 45 minutes for scheduled calls. Emergency lockout response is faster. We’ve rebuilt locks on Hancock Street, rekeyed entire homes after closing on Pleasant Street, and installed smart locks on modern builds near Hartwell Avenue. Lexington’s dual market - historic preservation on one end, executive-grade security on the other - is exactly why we maintain deep inventory in both period hardware and premium electronic systems.
Our Lock Installation & Rekey Services in Lexington
Smart Lock Installation
Lexington’s newer homes and renovated colonials both benefit from smart lock technology, but installation here demands more than drilling a standard hole. Many historic door frames in the 02420 ZIP code lack the structural integrity for modern smart lock bolt mechanisms without reinforcement. We assess the door’s actual condition - not just the lock - and specify Schlage Encode or Yale Assure models that fit properly without compromising the frame. For homes near Route 128 where executives want remote access logging and integration with whole-home systems, we install and configure Grade-1 electronic deadbolts with full smartphone control. Typical smart lock installation in Lexington runs $280-$520, including any necessary frame reinforcement.
Keyless Entry
Keyless entry systems eliminate the daily key hunt while maintaining security standards that satisfy Lexington insurance underwriters. We install keypad and touchscreen entry systems on front doors, side entrances, and detached garages throughout the 02421 ZIP code. For the mid-century ranches common off Marrett Road and Lowell Street, we often replace original Kwikset knob-sets with keyless levers that accommodate aging hands without requiring grip strength. Keyless entry installation in Lexington typically costs $220-$440, depending on whether we’re retrofitting an existing deadbolt location or creating a new one in a solid-core door.
Keypad Lock
Standalone keypad locks serve Lexington homeowners who want programmable codes for housekeepers, dog walkers, or visiting grandchildren without issuing physical keys. We see heavy demand for these in the affluent neighborhoods between Massachusetts Avenue and Route 2, where families maintain busy schedules and multiple service providers. Our keypad installations use commercial-grade components rated for New England temperature swings - critical in Lexington, where unheated mudrooms and three-season porches expose hardware to the full freeze-thaw cycle. A quality keypad lock installed in Lexington runs $190-$350.
Biometric Lock
Biometric fingerprint locks represent a smaller but growing segment of our Lexington work, concentrated in newer custom builds and high-value renovations. These systems demand precise installation and calibration - a fingerprint reader misaligned by even a small margin becomes a daily frustration. We install biometric systems primarily in homes near the Route 128 corridor where homeowners prioritize cutting-edge access control. Biometric lock installation in Lexington typically ranges $340-$580.
Key Duplication
Key duplication remains one of our most called-for services in Lexington, and it’s rarely straightforward. The antique skeleton keys still operating original mortise locks near the Battle Green require hand-filing on vintage key blanks - a dying art most hardware stores have abandoned. Meanwhile, the high-security Medeco and Mul-T-Lock cylinders common in executive homes use restricted keyways that can’t be duplicated without authorization codes. We maintain the equipment and key blank inventory for both extremes. Standard key duplication in Lexington runs $4-$12 per key; antique skeleton keys and restricted high-security duplicates range $18-$45 depending on complexity.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Lexington
We stock and install Schlage, Kwikset, and Medeco hardware as our core Lexington inventory, with same-day availability on most residential grades. For historic mortise work, we source period-appropriate replacement parts and matching finishes through specialized suppliers - not the big-box channels. For high-security applications, Medeco’s Grade-1 cylinders and Yale’s electronic lines cover the majority of Lexington’s executive-home market. We don’t show up with “whatever’s on the truck” and hope it fits. We ask the right questions when you call, confirm your hardware needs, and arrive with the correct components. That preparation saves a second trip and respects your time.
Common Lock Installation & Rekey Problems We See in Lexington Homes
- Freeze-thaw deadbolt binding. Lexington’s classic Massachusetts freeze-thaw cycle causes seasonal wood-frame door swelling and frame shift, leading to deadbolts that bind or fail to fully throw. Our techs adjust strikes seasonally for wood-framed colonial doors - a quick fix that prevents forced-entry damage when frustrated homeowners muscle the key.
- Smart lock incompatibility with historic mortise pockets. Modern replacement locks, including popular Kwikset smart models, fail to fit antique mortise pockets without custom adapter plates. We fabricate and finish these plates to match existing hardware, preserving period authenticity while adding modern functionality.
- High-security cylinder freeze in unheated spaces. Medeco cylinders in unheated mudrooms and detached garages - common in older colonial homes - freeze during nor’easters due to moisture ingress. We specify weather-sealed cylinder housings and recommend protected placement where possible.
- Original mortise lock failure with no modern replacement available. When a 19th-century Corbin or Reading mortise case finally gives out, matching dimensions with modern hardware often proves impossible. We rebuild the original case, re-pin to modern keyways, and restore function without visual compromise.
Pricing for Lock Installation & Rekey in Lexington, MA
We quote flat prices on the phone before any work begins. The price you hear is the price on the invoice - that’s our standing promise to every Lexington homeowner.
| Service | Typical Range in Lexington |
|---|---|
| Standard rekey (per cylinder) | $45-$85 |
| Lock installation (standard deadbolt) | $140-$220 |
| Smart lock installation | $280-$520 |
| Keyless entry / keypad lock | $190-$440 |
| Biometric lock installation | $340-$580 |
| Antique mortise rebuild | $180-$340 |
| Key duplication (standard) | $4-$12 |
| Key duplication (antique / restricted) | $18-$45 |
| Emergency lockout response | $120-$180 |
Several factors move Lexington jobs within these ranges: antique hardware requiring specialty parts, frame damage needing reinforcement, and after-hours emergency calls. We explain any variance before beginning work - never after. Seniors and veterans receive a permanent 5% discount. Any repair over $250 qualifies for $50 off. Estimates are free, and we offer a free second opinion on any written estimate you’ve received elsewhere.
Call (877) 664-8139 for your exact quote.
We Also Serve Cities Near Lexington
Our Lock Installation & Rekey in Lexington coverage extends to neighboring communities including Arlington, Bedford, Winchester, and Burlington. Each town presents its own housing stock and security needs, but our preparation and pricing standards remain consistent. If you’re on the Lexington border or manage properties across multiple towns, one call coordinates service everywhere we work.
Serving Lexington, MA - Our Local Coverage Area
We’re based in the Lexington area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Lock Installation & Rekey in Lexington
Yes - we regularly rekey antique mortise locks while preserving original finishes by working through existing access points and using period-appropriate lubricants and pinning materials. We recently rebuilt an antique Corbin mortise lock on a 19th-century colonial along Massachusetts Avenue near the Battle Green. The homeowner refused to replace it with a modern unit, so we restored the original case, re-pinned the cylinder to a modern Schlage keyway, and adjusted the strike plate to account for seasonal wood swelling. The result was smooth operation without compromising period authenticity. Call (877) 664-8139 to discuss your specific hardware - estimates are free.
For Battle Green colonials, we typically recommend rebuilding existing mortise hardware with modern internal pinning rather than replacing with modern Grade-2 units that compromise historic character. For modern homes near Route 128, we specify Grade-1 high-security cylinders - Medeco or Mul-T-Lock - often integrated with smart lock platforms for remote access and audit logging. The security demands differ, but our 90-Day Done Right Promise covers both. Call (877) 664-8139 for a recommendation based on your specific door and frame.
We adjust strike plates seasonally and specify extended-throw deadbolts with anti-binding features for wood-framed colonial doors most affected by swelling. Exterior cylinders in unheated mudrooms and detached garages get additional weather-sealing to prevent moisture infiltration during nor’easters. The fix is usually straightforward - a proper strike adjustment takes 15 minutes - but ignoring it leads to key breakage or forced-entry damage. Call (877) 664-8139 before the problem worsens; estimates are free.
Yes - we install smart locks that integrate with historic hardware by fabricating custom adapter plates and reinforcing door frames without visible modification to original trim. Most Lexington historic districts permit interior electronic components even when exterior appearance must remain unchanged. We assess your specific door construction during a free estimate and specify Schlage or Yale platforms that accommodate your constraints. Call (877) 664-8139 to schedule a look.
Yes - we maintain vintage key blank inventory and hand-filing equipment for skeleton keys still operating original mortise locks in Lexington’s pre-Revolutionary and Federal-era homes. These cannot be duplicated on standard key machines; the process requires matching the original bit pattern by eye and file. Skeleton key duplication in Lexington runs $18-$45 depending on complexity. Call (877) 664-8139 to confirm we have your blank in stock.
Ready to get your locks handled right? Call (877) 664-8139 now for a flat-price quote and same-day scheduling anywhere in Lexington. Estimates are free, every job carries our written 90-Day Done Right Promise, and a live person will answer your call - 24 hours a day, including nights, weekends, and holidays.
Written by Gil Navarro, Owner at Strongbox Lock & Safe Co., serving Lexington since 1982.