Fast, Reliable Lock Installation & Rekey Across Boston
Lock installation and rekeying in Boston runs $89-$450 depending on hardware and door type, with most residential jobs completed same-day. Our Lock Installation & Rekey team understands the quirks of Boston’s century-old housing stock - from Beacon Hill Federal rowhouses to Back Bay brownstones - and we quote flat prices before the truck rolls. Call (877) 664-8139; a live person answers, 24/7.
We’ve been serving Boston homeowners for over 42 years. That means we’ve rekeyed apartments in the North End the week before September 1st, retrofitted smart cylinders into 19th-century mortise cases on Louisburg Square, and realigned deadbolts thrown off by January freeze-thaw cycles on Marlborough Street. Boston’s old doors demand locksmiths who know the difference between a standard Kwikset and a hand-threaded mortise cylinder from the 1840s. We carry both.
Why Strongbox Lock & Safe Co. Is Boston’s Preferred Lock Installation & Rekey Company
Our reputation in Boston is built on showing up when we say we will and quoting the price you’ll actually pay. No $19 bait-and-switch. No subcontractor who can’t produce ID. Our technicians are background-checked, uniformed, and trained to work with the non-standard hardware common in Boston’s historic districts.
Response time to downtown Boston and the immediate neighborhoods - Beacon Hill, Back Bay, South End, North End, Waterfront - is typically 30-45 minutes during business hours. After hours, we still answer live and dispatch from our nearest technician. We’ve had Boston customers tell us they called three other locksmiths who quoted low over the phone, then jacked the price at the door. Our price is the price. Written on the invoice. Backed by our 90-Day Done Right Promise.
We know the local codes. We know the Historic District Commission rules. We know which suppliers still stock period-appropriate mortise cylinders. That knowledge saves Boston homeowners from fines, from botched installations, from doors that won’t lock in February.
Our Lock Installation & Rekey Services in Boston
Smart Lock Installation
Smart lock installation in Boston costs $180-$340 for most residential doors, including WiFi-enabled deadbolts from Schlage and Yale. On newer doors in South Boston or converted triple-deckers in Dorchester, installation is straightforward. But on Beacon Hill or Back Bay brownstones, we often need to retrofit - mounting the smart cylinder inside an antique mortise case while preserving the original exterior hardware. The Beacon Hill Historic District Commission requires it. We’ve done hundreds of these hybrid installs. The smart tech is hidden. The historic face stays.
Keyless Entry
Keyless entry systems in Boston run $220-$480 installed, depending on whether we’re adding a keypad to an existing deadbolt or installing a full electronic handle set. For landlords in Allston and Brighton managing the September 1st turnover crush, keyless entry eliminates rekeying entirely - just reprogram the code between tenants. We install and service Schlage Encode, Yale Assure, and Kwikset Halo systems. For commercial buildings near Boston Harbor, we specify corrosion-resistant finishes. The salt air off the harbor eats standard hardware in three years.
Keypad Lock
Keypad lock installation in Boston typically costs $160-$290. These are popular for side doors on triple-deckers in Somerville-adjacent neighborhoods and for rental units where tenants lose keys. We install mechanical keypads that don’t need batteries - Medeco and Simplex brands - and electronic versions with audit trails for property managers. On Boston’s older doors, we often need to custom-fabricate strike plates or shim the frame. The freeze-thaw cycle shifts everything by January.
Biometric Lock
Biometric lock installation in Boston starts at $340 and runs to $620 for fingerprint-enabled deadbolts with smartphone integration. These are still niche in Boston’s historic housing stock - the electronics don’t always play nice with 200-year-old door frames. But for renovated condos in the Seaport or new construction in the South End, we install and service several brands. We always assess the door condition first. A biometric lock on a warped frame is a waste of money.
Key Duplication
Key duplication in Boston costs $4-$18 per key for standard residential blanks, $25-$65 for high-security keys like Medeco or Mul-T-Lock. We cut on-site for most jobs. For the non-standard mortise keys common in Beacon Hill and Back Bay, we often need to order blanks from specialty suppliers - add 3-5 business days. We duplicate keys for Schlage, Kwikset, Yale, and most legacy brands. If you have an antique key with no markings, bring it in. We’ve identified keys from defunct Boston manufacturers that haven’t existed since the 1950s.
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 Boston
We install and service Schlage, Kwikset, Medeco, and Yale - plus Baldwin, Mul-T-Lock, Abloy, and Sargent - because the right lock belongs on the right door. For Boston’s historic housing, we maintain relationships with specialty suppliers who stock period-appropriate cylinders, escutcheons, and mortise cases. Most standard locksmiths can’t source a replacement for an 1840s rim lock. We can. That means faster turnaround for Boston homeowners and fewer compromises on security or aesthetics.
Common Lock Installation & Rekey Problems We See in Boston Homes
- Freeze-thaw deadbolt misalignment: Boston’s winter temperatures cross 32°F dozens of times, swelling and contracting the solid-wood frames of century-old rowhouses. By January, deadbolts that threw smoothly in October bind or refuse to latch. We realign strikes and shave frames - never force the hardware.
- Modern hardware forced onto historic mortise locks: The non-standard cylinders and strike plates in 19th-century Boston locks don’t accept modern replacements without custom fabrication. We’ve seen doors drilled out by inexperienced locksmiths, destroying irreplaceable hardware. We retrofit instead.
- Historic District violations on Beacon Hill: The Beacon Hill Historic District Commission restricts visible exterior hardware changes. Unauthorized swaps draw fines. We source period-appropriate pieces or hide modern cylinders inside original cases.
- September 1st rekeying overload: Boston’s mass lease-turnover - driven by over 30 colleges - creates a rekeying surge no other U.S. city matches. Locksmiths who don’t pre-book turn away hundreds of calls in 72 hours. We reserve capacity for our existing Boston customers.
Pricing for Lock Installation & Rekey in Boston, MA
| Service | Typical Range in Boston |
|---|---|
| Standard rekey (per cylinder) | $89-$140 |
| Smart lock installation | $180-$340 |
| Keyless entry / keypad lock | $160-$480 |
| Biometric lock installation | $340-$620 |
| Historic mortise retrofit | $280-$450 |
| Key duplication (standard) | $4-$18 |
| Key duplication (high-security) | $25-$65 |
| Emergency after-hours service | $140-$220 |
What moves the price: door material (solid oak vs. hollow-core), hardware brand and grade, whether the frame needs modification, and whether we’re working within Historic District constraints. We quote flat on the phone. The price we say is the price you pay. Seniors and veterans receive a permanent 5% discount. Repairs over $250 qualify for $50 off. Estimates are free - call (877) 664-8139.
We Also Serve Cities Near Boston
Our Boston coverage extends to South Boston, Chelsea, Cambridge, and Winthrop. Same technicians, same flat pricing, same 90-Day Done Right Promise. If you’re on the edge of our service area, call and we’ll confirm travel time.
Serving Boston, MA - Our Local Coverage Area
We’re based in the Boston 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 Boston
Yes, in most cases we retrofit a smart cylinder inside the existing mortise case while preserving the original exterior hardware. The Beacon Hill Historic District Commission requires visible hardware to remain period-appropriate. We recently rekeyed a Beacon Hill townhouse where the 1840s mortise lock had a non-standard cylinder - modern deadbolts wouldn’t fit. We sourced a period-appropriate cylinder from a specialty supplier and retrofitted it into the original case, preserving the historic face hardware per the Historic District Commission rules. Call (877) 664-8139 to assess your specific lock.
Book by early June at the latest. Boston’s September 1st mass lease-turnover - where tens of thousands of apartments flip tenants in a single 24-hour window driven by the synchronized academic calendars of more than 30 area colleges and universities - creates the most compressed annual rekeying surge of any U.S. city, with no equivalent in neighboring markets. Locksmiths who don’t pre-book this week months in advance routinely turn away hundreds of calls in 72 hours. We reserve capacity for our established Boston customers. Call (877) 664-8139 to get on the schedule.
Boston’s pronounced freeze-thaw cycle causes the solid-wood and brick door frames of century-old rowhouses to shift enough to throw deadbolts out of alignment by January. The frame swells in damp cold, contracts in dry cold, and the strike plate no longer meets the bolt squarely. We realign strikes, shim frames, and sometimes relocate hardware rather than force a misaligned lock. The salt-laden air off Boston Harbor accelerates exterior hardware corrosion especially in the North End (02113) and Waterfront (02110) neighborhoods. Call (877) 664-8139 before you muscle the key and snap it off.
We stock common mortise cylinders and maintain supplier relationships for hard-to-source parts, though some 19th-century components require 3-5 day special orders. The core ZIP codes (02108-02116) are dominated by Federal-style brick rowhouses and late-Victorian brownstones whose original or early-replacement mortise locksets have non-standard cylinders, cases, and strike plates by modern specs. We don’t promise every part on the truck, but we promise to find it or fabricate a working solution. Call (877) 664-8139 with your lock details.
Yes, if the locks share the same keyway and are compatible for master keying. Triple-deckers common on Boston’s neighborhood edges add layered landlord/tenant keying complexity with shared vestibule entries. We can rekey individual units separately, create a master key for building access, or key all locks alike - whatever matches your management needs. We assess the existing hardware on-site. Call (877) 664-8139 for a free estimate; we’ll quote flat before we drive.
Written by Gil Navarro, Owner at Strongbox Lock & Safe Co., serving Boston since 1982.