Lock Change Service in Cambridge, MA
Professional lock change for homes, apartments, and rental properties throughout Cambridge — near Harvard, MIT, Central Square, and beyond.
Cambridge's high rental turnover, dense student housing, and mix of long-term residents and short-term tenants make lock changes one of the most common and important security services we provide. Whether you're a landlord between tenants, a new homeowner, or a renter who needs peace of mind, Apex Lock N Key handles lock changes throughout Cambridge.
Lock Change vs. Rekey — Which Do You Need?
Before scheduling service, it helps to understand the difference. We'll always give you an honest recommendation based on your specific situation.
When to Change Your Locks
A lock change replaces the entire lock hardware — the cylinder, the bolt mechanism, and the exterior trim. You need a full lock change when your existing locks are old, worn, or damaged; when you want to upgrade to a higher-security grade; when you're switching from a keyed lock to a smart lock; or when the lock brand doesn't support rekeying. In Cambridge's older housing stock — triple-deckers, Victorian-era apartments, and pre-war buildings — worn locks are common and a full change is often the right call.
- Locks are worn, damaged, or outdated
- Upgrading to a higher-security grade
- Switching to a smart or keypad lock
- Lock brand doesn't support rekeying
- Aesthetic upgrade — matching new hardware
When Rekeying Is Enough
Rekeying changes the internal pin configuration of your existing lock so old keys no longer work. If your locks are in good condition and you simply want to invalidate old keys — after a tenant moves out, after losing a key, or after moving in — rekeying is faster and more affordable. We'll assess your locks on-site and tell you honestly whether a rekey is sufficient or whether a change is warranted.
- Locks are in good working condition
- Simply need to invalidate old keys
- Moving into a new home or apartment
- Tenant moved out — key control needed
- Lost or stolen keys
Lock Changes for Cambridge's Unique Housing Market
Cambridge is home to one of the most transient rental markets in Massachusetts. With Harvard University, MIT, and Lesley University drawing tens of thousands of students, researchers, and faculty each year, the city sees enormous rental turnover — particularly in neighborhoods like Harvard Square, Central Square, Inman Square, and Porter Square.
For landlords, this turnover creates a recurring security obligation. Massachusetts law and best practice both call for ensuring new tenants have exclusive key access. Whether you manage a single-family rental near Kendall Square or a multi-unit building off Massachusetts Avenue, we can change or rekey all locks between tenancies efficiently.
For renters and homeowners, Cambridge's density means shared entryways, building access systems, and older hardware are common. We work with all lock types found in Cambridge's housing stock — from standard Kwikset and Schlage deadbolts to mortise locks in older buildings.
Lock Hardware We Install in Cambridge
We install and supply lock hardware from all major manufacturers — from entry-level residential to commercial-grade high-security locks.
Deadbolts
Single and double-cylinder deadbolts from Schlage, Kwikset, Medeco, and Baldwin. ANSI Grade 1 and Grade 2 options for all security levels.
Knob & Lever Sets
Entry and passage sets for interior and exterior doors. We match your existing hardware finish — satin nickel, brass, bronze, or matte black.
Smart Locks
Keypad, Bluetooth, and Wi-Fi smart locks from Schlage, Kwikset, Yale, and August. We install and configure the app during the same visit.
Why Cambridge Residents & Landlords Choose Apex Lock N Key
Same-Day Service Available
We can often schedule lock changes the same day you call — ideal for landlords turning over a unit or homeowners who need immediate security.
Licensed & Insured in Massachusetts
Fully licensed by the Commonwealth of Massachusetts. Every lock change is performed by a trained professional locksmith.
New Keys Cut On-Site
We cut your new keys at your Cambridge property. Request multiple copies — we recommend at least two per lock. No second trip needed.
Upfront Pricing
We quote before we work. No surprise charges — you know the exact cost before we start, including hardware and labor.
Lock Change FAQs — Cambridge, MA
What is the difference between a lock change and a rekey in Cambridge?
A lock change replaces the entire lock hardware — the cylinder, bolt mechanism, and exterior trim — with a new unit. A rekey keeps your existing hardware but replaces the internal pins so that old keys no longer work and new keys are cut to match. If your locks are in good condition and you simply need to invalidate old keys, rekeying is faster and more affordable. If your locks are worn, damaged, or you want to upgrade to a higher-security grade or different brand, a full lock change is the right call. We'll assess your locks on-site and give you an honest recommendation.
Are landlords in Massachusetts required to change locks between tenants in Cambridge?
Massachusetts law does not explicitly mandate lock changes between every tenancy, but landlords have a legal duty to provide habitable and secure premises. In practice, changing or rekeying locks between tenants is the standard of care — and failing to do so can create liability if a former tenant uses an old key to re-enter. Many Cambridge landlords change locks as a matter of policy. We work with property managers throughout Cambridge to handle lock changes efficiently between tenancies.
Can you match the finish of my existing door hardware when changing locks in Cambridge?
Yes — we carry lock hardware in all standard finishes including satin nickel, polished brass, oil-rubbed bronze, matte black, and antique brass. When you call, tell us your existing hardware finish and we'll bring matching options. For older Cambridge properties with less common finishes, we can often source matching hardware or recommend the closest available option. We want your new locks to look like they belong on your door.
How long does a lock change take for a Cambridge apartment or home?
A standard single-cylinder deadbolt replacement takes about 20–30 minutes per lock, including removing the old hardware, installing the new lock, and testing the fit and function. Most Cambridge apartments have 1–2 exterior locks, so a typical job is completed in under an hour. Older buildings with non-standard door prep or mortise locks may take longer. We'll give you a realistic time estimate when you call.
Can you install a smart lock during a lock change visit in Cambridge?
Absolutely — a lock change visit is an ideal time to upgrade to a smart lock. Most smart locks install in the same door prep as a standard deadbolt, so the swap is straightforward. We install keypad, Bluetooth, and Wi-Fi smart locks from Schlage, Kwikset, Yale, and August. We'll configure the app and access codes before we leave so you're fully set up. If you're interested in a smart lock, mention it when you call and we'll bring compatible options.
How fast can a locksmith arrive in Middlesex County?
Apex Lock N Key provides fast mobile response, 7 AM–11 PM across Middlesex County, typically arriving on site within 15 to 30 minutes depending on your location.
Can a locksmith make a car key without the original?
Yes, our mobile locksmith vans are equipped with key cutting machines and transponder programming tools to generate brand-new car keys on site without an original.