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 Waltham
Lock installation and rekeying in Waltham costs between $75 and $250 per lock for most residential jobs, with high-security or multi-family work running higher. That price includes the labor, the new pins or hardware, and a written scope before any work starts. We dispatch crews to Waltham from our metro Boston office, and in most cases a uniformed, background-checked technician is on site within 60 to 90 minutes. If you’re locked out, need a deadbolt replaced, or want every lock in a triple-decker rekeyed before the September 1 lease turnover, call (331) 310-8471 and you’ll get a live person, not a voicemail queue.
The biggest difference between us and most locksmiths in Waltham is simple: the price we quote on the phone is the price on the invoice. That’s been the rule since 2002. Haven Standard Clause 1. No surcharge added at the door, no “the lock is more complicated than we thought” line. Daniel Novak built the company on that single principle, and it’s the reason Waltham landlords, condo owners, and property managers keep calling us back.
Why Novak Lock & Security Is Waltham’s Preferred Lock Installation & Rekey Company
Waltham is not a typical suburb. You’ve got triple-deckers from 1905 with original mortise lock bodies, a dense student rental market that turns over every September, and Route 128 corporate campuses that run commercial access control. Most locksmith operations treat Waltham as a stop on a route. We treat it as a distinct market with its own hardware problems and its own schedule.
For one, we actually understand mortise locks. The residential core near Moody Street, the South Side, and the streets around Linden are full of late-19th and early-20th century two- and three-family homes whose original mortise lock bodies were never designed for modern cylindrical cartridges. A technician who hasn’t worked on those will drill where they shouldn’t, split a 100-year-old door frame, and leave you with a bill and a worse lock. Our techs rekey these on site without replacing the original hardware.
We also know the calendar. Every late August, the blocks near Brandeis and Bentley fill with moving trucks. Landlords who didn’t schedule rekeys end up with old keys floating around a building. We batch-book these jobs for Waltham property managers weeks in advance and complete full building rekeys in a single visit. The technicians who do this work are background-checked, uniformed, and they leave a documented photo record on every job. That’s not a promise. That’s procedure.
Our Lock Installation & Rekey Services in Waltham

If you live in Waltham, your lock needs probably fall into one of these categories. Each one has local context that changes how we quote and how we work.
Smart Lock Installation
Smart locks on Waltham doors run into a specific problem: the original mortise prep on older homes. A Schlage Encode or Yale Assure doesn’t fit a mortise pocket without an adapter plate or a custom fitting, and forcing it creates a weak install. We install smart locks on everything from new cylindrical preps near the Cambridge Reservoir neighborhoods to modified mortise retrofits in the triple-deckers off Charles Street. Every install includes setup, app pairing, and a written record of the job. Smart lock installation in Waltham typically runs $180 to $380 per door, depending on the lock model and whether we’re retrofitting or replacing existing hardware.
Keyless Entry and Keypad Locks
Keypad locks are the most common upgrade we install for Waltham landlords. The math is simple: a keypad lets an owner rotate tenant codes instead of cutting new keys every turnover. On a three-family near Moody Street, that saves several hundred dollars per year. We install commercial-grade keypad deadbolts and lever sets that survive heavy renter use, and we program the codes on site with the owner. Keypad lock installation in Waltham runs $195 to $420 per door, including programming.
Biometric Locks
Biometric locks in Waltham are mostly a residential request, but we also see them on small office suites in converted mill buildings. Fingerprint readers need clean, dry finger registration, and New England winters complicate that: cold fingers read less reliably, so we always set up a PIN fallback at the same time. We install and program biometric deadbolts from the major manufacturers, and we walk you through the enrollment process before we leave. Biometric lock installation in Waltham runs $260 to $500 per door.
Key Duplication
Key duplication in Waltham has one major caveat: if the key says “Do Not Duplicate” on it, there is a reason. Restricted keyways on condominium common doors, apartment building entrances, and commercial spaces require proof of ownership before we cut. We duplicate standard residential keys on site, and for restricted Medeco, Mul-T-Lock, or Abloy systems, we verify authorization and cut from the registered key code. Standard key duplication in Waltham runs $4 to $12 per key; restricted duplication runs $15 to $35 per key with authorization. Never drill a 100-year-old mortise lock unless it’s the absolute last resort. Our first move is pick and rekey, because replacement mortise hardware for a prewar triple-decker is expensive and your landlord won’t thank you for a destroyed door frame.
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.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Waltham
We’re a factory-authorized service provider for Medeco, Mul-T-Lock, and Baldwin, among others. That matters in Waltham because so many multi-unit properties, Boulevard Street and the South Side and the condo conversions off the waterfront, run on restricted high-security cylinders that require certified rekeying. We stock pins, cores, and retrofit kits for those systems locally, so rekeys on restricted keys don’t wait on a distributor. We also service the full residential range: Kwikset, Schlage, Yale, Defiant. From entry-grade to high-security, every job gets the same written price before we touch a cylinder.
Common Lock Installation & Rekey Problems We See in Waltham Homes

- Winter deadbolt seizures: Freeze-thaw cycles in Waltham push moisture into keyways, and from November through March we see exterior deadbolts that won’t turn even with the right key. It’s not a bad rekey. It’s ice and corrosion. We clean, lubricate, and replace worn pins if needed.
- Strike-plate misalignment on swollen timber doors: The old triple-deckers on Moody Street and the surrounding blocks have solid timber doors that swell in spring. A deadbolt that threw perfectly in February won’t latch in May. The fix is strike-plate adjustment, not a new lock. We do both, and we’ll tell you which one you actually need.
- Big-box deadbolts forced into mortise prep: We see this constantly on the rental stock near Brandeis. A landlord buys a $35 cylindrical deadbolt at a hardware store, a handyman bores through the mortise pocket to make it fit, and the original lock body is destroyed. Key control is gone. We often have to rebuild the prep and install proper mortise-compatible hardware.
- Old keys still circulating after turnover: Every September, we get calls from Waltham landlords who return after the move-in rush. The tenants changed, but the old keys didn’t. We rekey every cylinder in the building and issue a new restricted key system when the owner wants control over who can copy.
Pricing for Lock Installation & Rekey in Waltham, MA
- Standard lock rekey (per cylinder): $25 to $45
- Mortise lock rekey (original hardware retained): $45 to $75 per lock
- Deadbolt replacement (cylindrical): $110 to $190 per door
- Smart lock installation: $180 to $380 per door
- Keypad lock installation: $195 to $420 per door
- Key duplication (standard): $4 to $12 per key
- Restricted key duplication (Medeco, Mul-T-Lock): $15 to $35 per key with authorization
- Full building rekey (3-unit triple-decker): $150 to $320 total
These are honest ranges, not teaser pricing. The full price is quoted on the phone before anyone is dispatched, and it is the price on the invoice. There is no call-out surcharge added on arrival. If you have a competitor’s written estimate, we’ll review it at no charge and give you a free second opinion.
We Also Serve Cities Near Waltham

We cover Waltham and the surrounding towns: Watertown, Lexington, Newton, and Arlington. If you’re a landlord with properties in multiple towns, one crew can handle the whole portfolio. For this page, we’re focused on Waltham, but every neighboring town gets the same written-price rule and the same Lock Installation & Rekey process.
Serving Waltham, MA - Our Local Coverage Area
We’re based in the Waltham 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 Waltham

Can you rekey a mortise lock in a Waltham triple-decker without replacing the original hardware?
Yes. We rekey original mortise lock bodies regularly in Waltham’s older two- and three-family homes, particularly around Moody Street and the South Side. We remove the cylinder, replace the pins, and reassemble the lock without altering the original trim, the faceplate, or the door prep. If the lock body itself is worn or seized, we’ll show you the condition and quote a replacement before doing anything. Call (331) 310-8471 for an exact quote on a mortise rekey.
Do Waltham landlords near Brandeis really schedule rekeys before every fall semester?
Yes, and the smart ones book in July and early August. The student rental cycle around Brandeis and Bentley means thousands of keys change hands each September 1. Landlords who wait until the week before move-in compete for technician time, and they run the risk of leaving old keys in circulation across a multi-unit building. We batch-schedule full building rekeys for Waltham property managers throughout August. The freeholder reads the three-star reviews of every locksmith before picking one; the schedule fills weeks before move-in.
My exterior deadbolt seizes up only in winter - is that a Waltham-specific problem?
It’s a New England problem that hits Waltham’s older housing stock hard. Repeated freeze-thaw cycles push moisture into the keyway, and when it refreezes, the pins bind. The fix is usually cleaning and lubrication with a cold-rated product, plus replacement of any worn pins. We also check whether the strike plate has shifted from seasonal movement, because a misaligned strike makes a working deadbolt feel seized. Call (331) 310-8471 and we’ll diagnose it on site.
Can you install a smart lock on the common entry door of a Waltham condo without damaging the frame the association owns?
In most cases, yes. The key is checking the existing prep first. Many Waltham condo buildings near the former watch factory have original mortise hardware or custom frames that a standard smart lock won’t fit without modification. We measure the door, confirm the backset and prep, and install the smart lock with a retrofit kit that doesn’t alter the frame. We also confirm with the association’s rules before we touch a common door, because some condo boards have restrictions on electronic hardware. The price is quoted in writing before we start.
How fast can you get a resident back into a Waltham apartment after a lockout, and will you drill the lock?
We can typically get a technician to a Waltham address within 60 to 90 minutes of your call. Drilling is the last resort. We pick the lock first, because picking preserves the hardware and costs less. If the lock is a high-security cylinder or has been damaged by a previous attempt, drilling may be necessary, and we’ll tell you the cost before we do it. The phone number is (331) 310-8471, and a live person answers 24/7.
Call Novak Lock & Security in Waltham
If you need a lock installed, a building rekeyed, or a resident let back in, call (331) 310-8471. You’ll talk to a live person who can quote the job in writing before anyone is dispatched. That’s the Hav







