Non-destructive entry first, always - and we re-key Schlage, Kwikset, and Baldwin locks on the spot while you watch
You get a price before we start. It does not change when we arrive. No surprises.
Fast, Reliable Lock Installation & Rekey Across Lexington
Lock installation and rekey in Lexington runs $85-$250 for a standard deadbolt swap and $25-$45 per cylinder for rekeying, quoted in writing before anyone dispatches. That’s the honest range, and it’s what you’ll pay. We serve the whole town: the Battle Green historic core, Peacock Farm, Turning Mill, Meriam Hill, and every acreage property off Lowell Street, Bedford Street, and Waltham Street. Our crews are local to Lexington, so a rekey on a Munroe Hill colonial or a keypad install on a Follen Hill ranch usually happens same-day or next-day. Call (331) 310-8471 and a live person answers, 24/7.
Why Novak Lock & Security Is Lexington’s Preferred Lock Installation & Rekey Company
Since 2002, every job we’ve done has started with a written price and ended with a documented photo record. That’s the rule Daniel Novak built the company on, and it’s Haven Standard Clause 1: the price on the phone is the price on the invoice. No dispatcher has ever changed a quote at the door, and no technician is permitted to. Lexington homeowners read the three-star reviews before they call, and that’s exactly who we write this for. You want the number on the page. Here it is. Rekey runs $25-$45 per cylinder. A new Schlage or Baldwin deadbolt installed runs $85-$250 depending on grade. A Yale or Schlage smart lock runs $220-$450 installed and configured. That’s the price in Lexington, and it does not change when the van pulls up.
We know this town’s locks better than most because we see the same hardware problems repeat themselves block after block. Original Kwikset deadbolts on 1960s split-levels in Peacock Farm. Mortise lock sets on colonials near the Battle Green that predate the Civil War. New teardown-rebuilds with European multi-point doors that most locksmiths won’t touch because they don’t stock the tooling. Our Lock Installation & Rekey team carries Corbin and Yale mortise components, Mul-T-Lock and Medeco high-security cylinders, and the full Schlage Encode lineup on the truck. When you call from Lexington, the tech already knows what to bring.
Our Lock Installation & Rekey Services in Lexington

Smart Lock Installation
Lexington homeowners buying $1.8M teardown rebuilds don’t want a standard deadbolt. They want a Schlage Encode or Yale Assure on the mudroom door, usually paired with the existing mortise hardware on the front entry. Smart lock installation in Lexington runs $220-$450 per door, including configuration to your Wi-Fi or Z-Wave network and a walkthrough of the app before we leave. On older colonials, we can install a smart lock on secondary doors without touching the character-defining front mortise, which keeps preservation-sensitive owners within local guidelines.
Keyless Entry & Keypad Lock
Keypad locks are the most common request we get from Lexington families on acreage properties. A keypad lock install runs $180-$320 per door. The reason is simple: when you’ve got kids, landscapers, or contractors coming and going on a property off Lowell Street, you stop wanting to hand out brass keys. We install Yale and Baldwin keypad deadbolts, program multiple user codes, and show you how to add and delete codes yourself. On a recent job off Lowell Street, we put a keypad on the mudroom door of a 1970s split-level so the owner could lock the back acreage from the house without walking out to the barn in January.
Biometric Lock Installation
Biometric locks run $380-$650 installed in Lexington, and they’re a niche product we recommend selectively. The fingerprint readers on consumer-grade units freeze up in Lexington’s January cold snap, so we usually steer customers toward a commercial-grade unit or a keypad alternative for exterior doors. Interior applications, like a home office or gun room, make more sense. We’ll tell you that in writing before you spend the money. That’s the point of bringing in a locksmith who’s worked this town for two decades, not a call center that reads a script.
Key Duplication
Key duplication in Lexington runs $3-$12 for standard keys and $15-$35 for high-security blanks like Mul-T-Lock or Medeco, which require a card we issue at the time of the original install. We duplicate on-site, in the van, usually in under ten minutes. For Lexington customers with acreage, we recommend bringing every key you own to one visit so we can inventory what’s out there, identify worn cylinders, and tell you honestly which locks are worth rekeying and which should be replaced.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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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 Lexington
We’re factory-authorized on Baldwin, Mul-T-Lock, and Sargent hardware, and we service everything from entry-grade Kwikset to high-security Medeco. That matters in Lexington because the town genuinely has both ends of the spectrum within a single mile: 18th-century mortise lock sets near the Battle Green and brand-new multi-point doors on teardown rebuilds. We stock Corbin and Yale mortise components, Schlage cylinders, and the common Kwikset and Baldwin parts on the van, so most Lexington jobs are completed in one visit without ordering anything. When a part is genuinely obscure for an antique Federal-era lock, we order it and schedule the install the same week it arrives.
Common Lock Installation & Rekey Problems We See in Lexington Homes

- Freeze-thaw frame swelling. Lexington gets about 48 inches of snow a year, and the overnight drops below 20°F cause the wooden door frames on older colonials and Peacock Farm ranches to contract sharply in January. Deadbolt throws bind against strike plates, and homeowners get locked out or can’t throw the bolt at all. Rekeying won’t fix the binding; correcting the strike plate and throw alignment does.
- Mortise locks that nobody else will touch. Homes in the Battle Green Historic District still carry functioning 19th-century mortise lock sets. The escutcheons and cases are character-defining under local preservation guidelines. A rekey on these locks takes Corbin or Yale mortise components and a tech who knows not to mar the original plate. We handle it.
- Builder-grade Kwikset deadbolts on million-dollar lots. We see this weekly. A 1950s Turning Mill ranch with original Kwikset hardware on doors worth more than most cars. The lock still works, but it’s one bump key away from useless. We rekey or replace, and we’ll show you the photo record of what we found before we touch anything.
- Outbuildings on acreage that never got keyed alike. Many Lexington acreage properties have a main house, a barn or workshop, a gate, and maybe a detached garage, all on different keys because previous owners never consolidated. We inventory everything on the first visit and rekey it all to one key in that same visit. One trip, not three.
Pricing for Lock Installation & Rekey in Lexington, MA
We Also Serve Cities Near Lexington

From our dispatch coordination in Boston, our techs serve Lexington and the surrounding communities. The same written-price rule and 365-Day Done Right Promise apply whether we’re rekeying a colonial here in Lexington or installing a smart lock in Lexington‘s neighboring towns of Woburn, Arlington, Waltham, or Watertown. Same truck, same price sheet, same photo record when we leave.
Serving Lexington, MA - Our Local Coverage Area
We’re based in the Lexington 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 Lexington

Can a Battle Green-era mortise lock be rekeyed without damaging the escutcheon or original case?
Yes, a mortise lock in a Battle Green historic home can be rekeyed without damaging the escutcheon or the original case when the tech carries period-sympathetic Corbin or Yale mortise cylinders and removes the set with the right hand tools rather than prying at the plate. We remove the mortise body carefully, re-pin the cylinder, and reinstall it so the original hardware stays intact. This is exactly the kind of work that a cylindrical-only locksmith walks away from, and it’s part of our standard rekey service in Lexington. Call (331) 310-8471 and describe the lock; we’ll tell you the price in writing before any appointment is scheduled.
My Peacock Farm ranch has two exterior doors with different keys, plus a garage side door on a third key. Can they all be keyed alike in one visit?
Yes, all three can be keyed alike in one visit. We rekey each cylinder to match a single key, which runs $25-$45 per cylinder in Lexington, and we can cut additional copies of that key before we leave. If any of the three locks is worn or failing, we’ll show you that on the photo record and give you a replacement price before touching it. Call (331) 310-8471 for an exact quote on a three-cylinder rekey in Peacock Farm.
Why does my deadbolt stick every January in Lexington, and will a rekey fix it?
A deadbolt that sticks every January in Lexington is usually the result of the freeze-thaw cycle, not the lock cylinder itself. About 48 inches of annual snow and repeated sub-20°F nights cause the wooden door frame on older homes to shrink, which pulls the strike plate out of alignment and binds the bolt. Rekeying won’t fix that; the fix is correcting the strike plate position and verifying the throw, which our techs handle as a standard part of any deadbolt install or rekey visit. Call (331) 310-8471 and we’ll schedule a Lexington tech to check the alignment and rekey at the same time.
Can you install a smart lock on a Lexington colonial with a mortise lock, or do I have to replace the whole door?
You do not have to replace the whole door. On Lexington colonials with original mortise locks, we keep the mortise as the primary entry and install the smart lock on a secondary door, like a mudroom or side door with a standard cylindrical prep. That keeps the historic front entry intact and gets you keyless access where you actually walk in. Smart lock installation runs $220-$450 per door in Lexington. Call (331) 310-8471 and ask about Schlage Encode or Yale Assure options for your home.
I have a gated driveway and two outbuildings on my Lexington acreage. How many trips will it take to get everything on one key?
One trip. We inventory the gate lock, both outbuildings, and the main house locks in the same visit, then rekey every cylinder to a single key. If any gate hardware is rusted or failing, we’ll replace it on the spot. We did exactly this off Lowell Street: replaced a rusted gate lock and rekeyed three outbuildings, a workshop, and the main house to one Mul-T-Lock key in one visit, then added a Schlage Encode on the mudroom door so the owner could lock the back acreage from the house. The price for the full inventory and rekey is quoted in writing before we dispatch. Call (331) 310-8471 and we’ll walk through your property on the phone, then send a tech once.
Contact Novak Lock & Security in Lexington
Lexington homeowners who want a real price before the van moves should call (331) 310-8471. A live person answers around the clock, reads you the price for lock installation or rekey in Lexington, and dispatches a background-checked, uniformed tech who carries the full price in writing. Every job ends with a photo record of the work, and every lock is covered by the 365-Day Done Right Promise. Free estimates are always part of the call.
Written by Daniel Novak, Owner at Novak Lock & Security, providing lock installation and rekey in Lexington, MA.







