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 Emergency Locksmith Across Waltham
Emergency locksmith work in Waltham, MA typically costs between $95 and $225 for a standard non-destructive lockout, with broken key extraction running $85 to $160 and eviction lock changes priced at $125 to $250 depending on cylinder count and hardware grade. We quote that price on the phone before anyone is dispatched, and it’s the price on the invoice when the truck leaves. That’s been our rule since 2002, and it applies to every call we answer in Waltham, from Moody Street to the South Side. Call (331) 310-8471 and you’ll speak to a live person who can name the price before we send a technician.
Daniel Novak built Novak Lock & Security on a single clause that runs through every job: the number quoted on the phone is contractually the number on the invoice. In Waltham, where a frozen mortise lock on a triple-decker is as common as a lost transponder key, that written-price rule matters more than most places.
Why Novak Lock & Security Is Waltham’s Preferred Emergency Locksmith Company
Waltham isn’t a generic suburb. The same emergency call board that handles a Brandeis student locked out of a Linden Street apartment also covers biotech campuses off Route 128 and pre-1920 triple-deckers with original mortise locks that modern hardware won’t fit. We work all of it. Our technicians know that a Moody Street three-family built in 1910 has a different door prep than a Watch Factory loft, and that the fix has to respect which one the caller owns and which one the freeholder owns.
Every technician who rolls into Waltham is background-checked, uniformed, and working under The Haven Standard, the documented quality framework we’ve applied to 60,000+ locks, keys, and systems since 2002. Before work starts, you receive a written price. After the job, you receive a documented photo record of what was done, including the condition of the hardware before and after. That’s not a courtesy. It’s Clause 4 of the Standard.
Response time to Waltham neighborhoods is typically 25 to 40 minutes depending on traffic on Main Street or Trapelo Road. Our dispatchers know the city. They know that the South Side and the streets around Brandeis stack up with rental rekeys every August, and they know which calls are on the 128 side of town and which are on the Moody Street side. You reach a live person, day or night, not a voicemail queue.
We also carry a Emergency Locksmith skill set that includes non-destructive entry, key control restoration, and mortise lock cylinder swaps, which matters in a city with this much old hardware. Waltham customers regularly tell us the lock they thought needed drilling was opened in under ten minutes with no damage to the door.
Our Emergency Locksmith Services in Waltham

24/7 Emergency Lockout
The most common Waltham call is a simple lockout: a tenant on the South Side, a homeowner near Cedarwood, a professor whose office key stayed in a coat pocket. We use non-destructive methods first, raking the pin and tumbler stack before any thought of drilling. On original mortise locks, which are common in the triple-deckers along Moody Street, drilling would mean replacing the entire lock body and the freeholder footing a bill for a door they didn’t damage. We don’t do that. Waltham lockouts typically run $95 to $225, and the price is set before we dispatch.

Broken Key Extraction
A snapped key in a deadbolt happens more often in Waltham than people expect, and the old locks on this city’s housing stock make it worse. Original mortise locks and cylinder locks that have endured decades of freeze-thaw cycles don’t give up broken key fragments easily. We extract them with the right tools and without pulling the whole mortise lock. Broken key extraction in Waltham runs $85 to $160. On a Watch Factory condo door with non-standard prep, that’s usually the cheapest outcome by a wide margin.

Eviction Lock Change
Landlords along Linden Street and the South Side call us for eviction lock changes during turnover season and after eviction orders. The job is time-sensitive: the old tenant’s key has to be dead before the new tenant’s key works. We swap cylinders or rekey the existing lock body, restoring key control at the building level. Waltham eviction lock changes run $125 to $250 for a standard two-cylinder arrangement, with a written scope before the first screw comes out. On original mortise locks, we preserve the hardware and rekey the cylinder only, which keeps the freeholder’s historic door intact.

Safe Opening
Safes show up in Waltham’s older homes and the commercial spaces along Route 128, from floor safes in triple-decker basements to small gun safes in condos off South Street. We open them without ruining the safe where possible, and quote a firm price before any work begins. Residential safe openings in Waltham typically run $220 to $450 depending on the safe type and locking mechanism.

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 factory-authorized for the high-security work that Waltham’s biotech and defense-tech tenants require, including Medeco, Mul-T-Lock, Abloy, and Baldwin. We also service Sargent mortise locks, which are common in municipal, university, and commercial door hardware across the city. And we handle entry-grade Schlage and Kwikset for rental stock where budget matters but key control still has to be right. For Waltham customers, we keep common parts on the trucks so a cylinder swap or a key blank replacement doesn’t turn into a second appointment. If your existing hardware is a Baldwin mortise lock on a Linden Street triple-decker or a Mul-T-Lock cylinder on a corporate door off Winter Street, we can service it, key it, and rekey it. Prices are quoted in writing before any labor begins.
Common Emergency Locksmith Problems We See in Waltham Homes

- Frozen deadbolts and seized keyways on exterior doors. Hard Massachusetts winters produce freeze-thaw cycles that work their way into lock cylinders, especially on the north-facing doors of the city’s older triple-deckers. We see these calls from November through March, and the fix is usually a controlled disassembly and lubrication, not a new lock.
- Strike-plate misalignment from seasonal wood swelling. The timber-framed construction behind many Waltham doors swells in spring and fall, throwing the strike plate off and making the deadbolt bind. Rekeying won’t fix it. A realignment and plate adjustment will. We quote that before we touch the door.
- Original mortise locks with no modern replacement cartridge. The pre-1920 triple-deckers near Moody Street often have mortise lock bodies that don’t accept modern cylindrical cartridges. A handyman who doesn’t know this will drill and damage the door. We rekey the existing cylinder or replace the pin and tumbler stack inside the mortise body instead.
- Rental turnover key control gaps. When a Brandeis or Bentley student moves out, the landlord needs every previous key dead and every new key working before move-in day. Full-building rekeys are routine for us in late August around Linden Street and the neighborhoods south of campus, and we schedule them in writing with a flat per-lock price.
Pricing for Emergency Locksmith in Waltham, MA
Here are the numbers for Waltham, quoted the way we quote on the phone: a standard non-destructive lockout runs $95 to $225. Broken key extraction runs $85 to $160. Eviction lock changes run $125 to $250. Safe openings run $220 to $450. A full-building rekey for a Waltham triple-decker typically runs $20 to $35 per cylinder, depending on the hardware grade and whether we’re preserving original mortise locks or swapping in new cylinders. You’ll always get the exact price before we dispatch, and that is the price on the invoice. Haven Standard Clause 1. No call-out surcharge added on arrival. If you have a competitor’s written estimate, bring it in and we’ll review it at no charge under our Free Second Opinion policy. Call (331) 310-8471 for a free estimate.
One of the reasons Waltham homeowners and property managers stay with us is that we don’t quote a teaser number and then discover new problems on-site. We quote the job we’re going to do, and if we find something new, we show you the photo and get written approval before doing anything about it.
We Also Serve Cities Near Waltham

Our trucks cover Waltham and the surrounding metro core, including Watertown, Lexington, Newton, and Arlington. If you’re on the border near Belmont or Weston, call us and we’ll confirm coverage. The same written-price rule applies everywhere we work. Waltham receives priority dispatch for calls within city limits, but the surrounding towns are on our board daily.
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 - Emergency Locksmith in Waltham

Yes. We use non-destructive entry methods first on every Waltham lockout, and that’s especially important on original mortise locks, where drilling would force a full lock body replacement. We’ll rake the pin and tumbler stack or manipulate the lock through the keyway, then make sure the cylinder still works. Standard non-destructive entry in Waltham runs $95 to $225, quoted before dispatch. Call (331) 310-8471 and we’ll confirm the price while you’re still on the phone.
Yes. Every August we batch-schedule full-building rekeys for Waltham landlords around Linden Street, the South Side, and the streets just south of Brandeis. We rekey every cylinder in the building, verify key control so no previous tenant key works, and document the work with photo records. Flat per-lock pricing is written before we start. Call (331) 310-8471 to schedule the building now, before the move-in rush.
Yes. Broken key fragments can usually be extracted through the keyway without removing the mortise lock body. The Watch Factory conversions have non-standard door prep, so pulling the entire lock is a much bigger job than it’s worth. Broken key extraction in Waltham runs $85 to $160, and we’ll tell you the exact number before we start. Call (331) 310-8471 for a firm quote.
Standard entry-grade Kwikset and Schlage cylinders can be bumped, which matters on a rental where prior tenants have copies. If you’re concerned about key control, we can install commercial-grade cylinders from Mul-T-Lock or Medeco that are bump-resistant and have restricted key duplication. On original mortise locks, we swap the cylinder inside the existing body, so the door stays intact. We’ll quote the cylinder swap in writing before any work begins. Call (331) 310-8471 for an exact price.
Yes, we handle same-day eviction lock changes in Waltham, and no, the old key will not work afterward. We rekey or swap the cylinder so every previous tenant key loses access, then verify the new key operates the lock before we leave. Eviction lock changes in Waltham run $125 to $250 depending on cylinder count, with a written price and a documented photo record when we’re done. Call (331) 310-8471 to schedule.
Written by Daniel Novak, Owner at Novak Lock & Security, serving Waltham and the surrounding metro area since 2002 under The Haven Standard.
Ready to get back in or lock an old tenant out? Call (331) 310-8471 now. We answer live, quote in writing, and show up with the tools and the documentation to do the job right in Waltham.






