Fast, Reliable Lock Installation & Rekey Across Kensington
Lock installation and rekeying in Kensington, NY typically costs $120-$380 depending on hardware grade and door condition, with most jobs completed same-day. If you’re calling from a pre-war row house near Albemarle Road or a mixed-use building along Coney Island Avenue, you’re dealing with locks and door frames that demand specific expertise most locksmiths don’t carry.
We’ve been answering calls in the 11218 zip code for over 42 years. Our technicians know the difference between a standard cylindrical replacement and the mortise retrofit a 1920s Kensington door actually needs. When you call (877) 691-7931, a live person picks up - no voicemail, no callback queue - and quotes a flat price before the truck rolls. We serve every block from Cortelyou Road down to the Prospect Expressway, and we plan to be here in thirty years.
Why Strongbox Lock & Safe Co. of New York City Is Kensington’s Preferred Lock Installation & Rekey Company
Kensington isn’t like other Brooklyn neighborhoods. The density of subdivided pre-war rentals here means we’re constantly navigating NYC Multiple Dwelling Law requirements alongside standard lock work. That dual-compliance reality - self-closing doors, Grade 1 deadbolts, peepholes per Admin Code §27-2042 - is everyday work for our Lock Installation & Rekey team, not a special request.
Our reputation here was built one door at a time. We’ve rekeyed countless six-unit walk-ups where tenant turnover runs high and small landlords need fast, documented compliance. Our technicians are background-checked, uniformed, and present ID at every Kensington door. The price we quote on the phone is the price on the invoice - a square deal, because bait-and-switch is exactly why most Kensington callers are wary of this trade.
Response time to Kensington averages 25-40 minutes during business hours, 45-60 minutes for overnight emergency calls. We know which blocks have restricted parking, which buildings share vestibule access with commercial tenants, and where the original mortise hardware still lives behind painted-over escutcheons.
Every job carries our 90-Day Done Right Promise, backed in writing with no extra paperwork. If it’s not right, we come back. No arguing.
Our Lock Installation & Rekey Services in Kensington
Smart Lock Installation
Smart lock installation in Kensington runs $280-$450 for most residential doors, but the real question is whether your 1910s mortise door can accept one without major modification. We regularly retrofit August, Yale Assure, and Schlage Encode units onto historic Kensington row house doors, often fabricating custom strike plates to accommodate thick stiles and warped frames. For landlords managing multiple units near Cortelyou Road, we install networked smart locks with master override and individual tenant codes - a practical upgrade that still satisfies MDL access requirements.
Keyless Entry
Keyless entry systems start at $220 installed for basic keypad deadbolts and climb to $520 for commercial-grade electronic strikes with audit trails. In Kensington’s mixed-use buildings along Coney Island Avenue, we install keyless entry that serves both the storefront’s egress needs and the residential units above. One code for the delivery driver, another for the tenant, a master for the landlord - all logged with timestamps. The original brass doorknob stays if you want it to. We don’t force replacement when retrofitting makes more sense.
Keypad Lock
Keypad lock installation in Kensington typically costs $180-$340 for residential grade, $380-$520 for commercial. These are the workhorses for high-turnover rentals - no rekeying between tenants, just a code change. We favor Schlage and Yale keypads for Kensington’s harsh seasonal swings because their sealed electronics hold up better than budget brands when door frames swell and contract. For a recent job on Ocean Parkway, we installed a Yale keypad with temporary guest codes for a basement rental that cycles Airbnb guests weekly. The landlord hasn’t called us back for three years.
Biometric Lock
Biometric lock installation in Kensington starts around $420 and can reach $680 for multi-user commercial units with fingerprint and PIN fallback. These make sense for owner-occupied homes where you want no keys to lose and no codes to remember. We’ve installed fingerprint locks on several single-family restorations near Prospect Park South, where owners kept the historic exterior hardware visible and hid the biometric mechanism inside. The technology has improved - false reject rates under 1% on quality units - but we still recommend a mechanical override for every Kensington installation. Winters here are hard enough on electronics without adding lockout risk.
Electronic Lock
Electronic lock is the broad category that covers everything from simple battery deadbolts to hardwired access control systems. In Kensington, we see two distinct needs: residential retrofits for aging mortise doors ($240-$480) and commercial dual-compliance installations for Coney Island Avenue mixed-use buildings ($520-$890). The latter requires hardware that satisfies both NYC commercial egress codes and Multiple Dwelling Law tenant access rules in a single door assembly. Standard big-box electronic locks rarely manage both. We source Medeco and Mul-T-Lock electronic cylinders specifically rated for this dual use, and we keep common Kensington configurations in stock for same-day installation.
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.
- 3
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 Kensington
We install and service Medeco, Yale, Baldwin, and Mul-T-Lock throughout Kensington, plus Schlage, Abloy, Kwikset, and Sargent when the job calls for them. For this neighborhood specifically, we maintain local stock of mortise conversion kits, thick-door spindle extensions, and corrosion-resistant components that stand up to humid summers and salt-laden winter air. Most Kensington jobs don’t require a special order. When they do, our Brooklyn supply house delivers next-day, not next-week. The right lock goes on the right door - not just what’s on the truck.
Common Lock Installation & Rekey Problems We See in Kensington Homes
- Original mortise lock bodies with no replacement parts. The 1910-1930 hardware in Kensington row houses often uses keyways and case dimensions that haven’t been manufactured in decades. We either machine custom components or retrofit a modern cylindrical deadbolt while preserving the historic door. Full mortise restoration runs $340-$580; retrofit with Grade 1 deadbolt is typically $180-$280.
- Seasonal frame swelling jamming bolts and latches. NYC’s freeze-thaw cycle swells the wood door frames common throughout Kensington every late November through February. We’ve freed more mortise bolts with a mallet and block than we can count, then adjusted strike plates and lubricated followers to prevent recurrence. The real fix is sometimes planing the frame or upgrading to a deadbolt with longer throw tolerance.
- Dual-compliance failures on Coney Island Avenue mixed-use buildings. Ground-floor South Asian or Bangladeshi storefronts with residential units above share a single vestibule door that must satisfy commercial egress and MDL tenant access simultaneously. Standard hardware fails one or both. We install Medeco and Mul-T-Lock cylinders specifically rated for this dual use, with panic hardware where required and tenant key override for residential access.
- Stripped screws and split stiles from repeated rekeying. High tenant turnover in subdivided Kensington rentals means locks get changed often. The soft pine stiles in pre-war doors can’t take infinite screw cycles. We install threaded brass inserts and hardwood backing plates to restore solid mounting surfaces without replacing the door.
Pricing for Lock Installation & Rekey in Kensington, NY
Here’s what lock installation and rekeying actually costs in Kensington’s market:
| Service | Typical Range |
|---|---|
| Standard rekey (cylindrical lock) | $45-$85 per cylinder |
| Mortise lock rekey or repair | $120-$220 |
| Grade 1 deadbolt installation | $180-$280 |
| Smart lock installation | $280-$450 |
| Keyless entry / keypad lock | $180-$520 |
| Biometric lock installation | $420-$680 |
| Electronic lock (dual-compliance commercial) | $520-$890 |
| Mortise restoration with custom machining | $340-$580 |
What moves the price: door thickness over 1-3/4 inches, frame repair or shimming, hardware grade (Grade 2 vs. Grade 1), and whether we need to satisfy dual compliance codes. We quote flat on the phone after asking the right questions. No arrival surprises, no “that’ll be extra” once we’re at your door.
Standing offers for Kensington customers: $50 off any repair over $250, free second opinion on any written estimate, $89 seasonal tune-up, and a permanent 5% discount for seniors and veterans. Call (877) 691-7931 for an exact quote - estimates are free.
We Also Serve Cities Near Kensington
Our Lock Installation & Rekey in Kensington service extends to Flatbush for the larger apartment buildings along Flatbush Avenue, Borough Park for residential rekeying in the Orthodox community, broader Brooklyn for commercial accounts, and Park Slope for brownstone restoration work. Same flat pricing, same 90-Day Done Right Promise, same live person answering the phone.
Serving Kensington, NY - Our Local Coverage Area
We’re based in the Kensington 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 Kensington
Yes, if your Kensington building has three or more residential units, NYC Multiple Dwelling Law requires self-closing doors with spring hinges or closers on all unit entry doors and the main building entrance. We install LCN and Norton closers rated for Kensington’s heavy pre-war doors, typically $140-$260 per door including adjustment. The hardware must be Grade 1 commercial for buildings over six units. Call (877) 691-7931 to schedule a compliance check - estimates are free.
Sometimes, but many Kensington mortise locks from the 1910s-1930s use keyways no longer manufactured. We recently rekeyed a six-unit walk-up on Albemarle Road near Coney Island Avenue where the original 1920s mortise lock body had seized from freeze-thaw swelling. We retrofitted a Schlage Grade 1 deadbolt with a Mul-T-Lock keyway to meet both commercial egress and MDL tenant-access rules, keeping the historic door intact. When rekeying is possible, it’s $120-$220. When the keyway is obsolete, retrofit runs $180-$340. We’ll tell you honestly which path makes sense after seeing the lock.
Wood door frames in Kensington’s pre-war row houses swell from November through February as moisture freezes and expands in the grain. This binds mortise bolts and deadlatch followers against strike plates that fit fine in summer. We see this spike reliably every year. The fix is usually strike plate adjustment, bolt lubrication with graphite (not oil, which gums in cold), and sometimes frame planing if swelling is severe. A seasonal tune-up at $89 catches this before you’re locked out in a snowstorm. Call (877) 691-7931 to book before the first freeze.
You need hardware that satisfies both NYC commercial egress requirements and Multiple Dwelling Law tenant access rules in a single door assembly. Standard residential deadbolts fail commercial code; standard commercial panic hardware fails MDL tenant key access. We install Medeco and Mul-T-Lock electronic cylinders with panic bar override, or Schlage Primus XP keyways with commercial-grade lever sets, configured so the storefront owner has master control and each residential unit has individual keyed access. These dual-compliance installations run $520-$890 in Kensington. We keep common configurations in stock for same-day service.
Under NYC law, tenants may install their own lock on their apartment door provided they give the landlord a duplicate key upon request. However, the lock must not damage the door or frame, and in Kensington’s MDL-regulated buildings, it must still satisfy self-closing and Grade 1 requirements. Many lease agreements have specific clauses about lock changes. We recommend documenting any installation with photos and providing the key promptly. If you’re a landlord, we can master-key your building so tenants have privacy and you retain emergency access. Call (877) 691-7931 - we’ll walk through the specifics of your situation.
Written by Frank Bellomo, Owner at Strongbox Lock & Safe Co., serving Kensington and New York City since 1982.