
Complete Home Security
For Boston Residents
From emergency lockouts to whole-house rekeying and smart lock upgrades. Commonwealth-registered, fully insured, and trusted by local homeowners.
Protecting Boston's Homes
I'm Ray, owner of City Locksmith 24/7. Securing a family's home is the most personal work we do. Recently, a young couple bought a beautiful, historic brownstone in the South End. They were handed a jumble of keys at closing and had no idea who else had copies—contractors, old roommates, dog walkers.
Instead of ripping out the gorgeous original mortise locks and slapping cheap modern deadbolts on their antique doors, we carefully disassembled the historic hardware, repaired the worn internal springs, and rekeyed the entire house to a single new key. They kept the historic charm of their home, but gained total peace of mind knowing exactly who had access. That's what we do: we protect your family while respecting your home.
Whole-House Rekeying
Just moved into a new condo in Brighton or a triple-decker in Dorchester? You need to rekey your locks immediately. We come to your home, reconfigure the internal pins of your existing locks, and provide you with a brand new set of keys. It is drastically cheaper than buying new hardware, and we can usually set it up so one single key opens your front, back, and side doors.
Emergency House Lockouts
Stepped out to grab a package and heard the door click shut behind you? Being locked out in the dead of a New England winter is dangerous. Our 24/7 emergency team uses damage-free picking tools and bypass methods to get you back into the warmth of your home quickly, without unnecessarily drilling and destroying your lock.
Smart Lock Installation
Tired of hiding keys under the mat for the dog walker? We supply and install advanced residential smart locks and Wi-Fi keypads. Perfect for busy families or local Airbnb hosts, these systems allow you to monitor who comes and goes from your phone, lock your door remotely from work, and generate temporary access codes that expire automatically.
Historic Lock Repair
Boston is famous for its historic architecture. If your heavy mortise lock in Beacon Hill is sticking or the knob is spinning freely, don't let an inexperienced locksmith drill it out. We specialize in antique lock repair. We carefully open the cassette, replace the failing springs, clean the mechanisms, and preserve the original charm and value of your historic door.
High-Security Deadbolts
Standard hardware-store locks can be bumped or picked by a novice in seconds. If you want serious protection against break-ins, we provide high-security lock installation using premium brands like Medeco. These heavy-duty cylinders feature hardened steel inserts to stop drills and restricted keyways, meaning nobody can secretly copy your house key at a local kiosk without your authorization card.

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Brands We Install & Service
- Schlage
- Kwikset
- Medeco
- Mul-T-Lock
- Yale
- Baldwin
- August Smart Locks
Areas We Serve For Residential Service
We provide fast, mobile residential dispatch to homes, apartments, and condos across the Greater Boston area.
Home Security FAQs
Common questions about securing your property.
Frequently Asked Questions
Home Security Insights
How Rekeying Works
Moving to a new apartment? Learn the mechanics behind rekeying and why you don't need to waste money replacing your hardware.
Read Article ›Locked Out of Your Home?
Don't panic. Follow these steps to get back inside safely, and learn how to avoid predatory locksmith scams.
Read Article ›Student Apartment Security
Back to school in Boston? Dorm and off-campus apartment security tips to protect your keys and valuables this fall.
Read Article ›Secure Your Home Today
Contact Ray directly to schedule a free home security assessment or a whole-house rekeying.
Call Now: (617) 383-7290