240 Bedford Street, Lexington, MA 02420 Mon–Fri 8:30–5 · Sat 9–1
What we do at home

From a duplicate house key to a full master-key system.

Rekey after move-in

Just bought a house? We can re-key most locks the same day, in shop or mobile. Old keys stop working, new keys are yours alone.

Deadbolt installation

Single-cylinder, double-cylinder, or smart deadbolts — installed plumb, with reinforced strike plates and proper-length screws.

Decorative hardware

Knobs, levers, handlesets, and trim from quality brands — finishes matched to your home's woodwork.

High-security keys

Restricted keyways and pick-resistant cylinders. Keys can only be duplicated with your authorization.

Lock repair

A sticky, loose, or broken lock isn't always a replacement job — often we can repair and rebuild what's already there.

Master-key systems

One key for you, separate keys for cleaners, sitters, family — all opening only what they should. Documented and maintainable.

Quality at a fair price

Top-of-the-line hardware, for security and looks.

Lexington Lock Service can provide you and your family with top-of-the-line door hardware for both security and a beautiful look for your home. From making a duplicate house key to installing a high-security master-key system, you'll get quality work at a fair price.

Our customer's needs are our number-one priority. Whether you're fixing a broken lock, replacing builder-grade hardware with something that matches your home, or designing a system to manage access across a property — we'll talk it through and do it right.

Schedule a consultation

How a service call works

Mobile when you need it, in-shop when it's faster.

01

Call or stop in

Tell us what you've got — broken lock, new house, multiple doors. We'll talk through options and price.

02

Bring it in, or we come out

Re-keys and most installs happen in shop while you wait. For bigger jobs, our stocked van comes to your door.

03

Installed, documented, done

For master-key systems, you'll get the key chart for future maintenance. For everything else, you'll get keys that work and locks that last.

New home? Broken lock? Big project?

Call Bob and tell him what's going on — most homes get same-week service.