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 Nashua
Lock installation and rekeying in Nashua runs $95-$225 for standard residential work, with high-security cylinders and smart locks priced higher and quoted in writing before we dispatch. If you’ve just bought a house off Route 3, lost a key in Mine Falls Park, or inherited a condo unit in a Tree Streets triple-decker, we can usually be on site same day. Novak Lock & Security has worked Nashua’s housing stock long enough to know that a 1910s mortise lock and a 1980s ranch deadbolt are two different jobs, and we quote them that way. Call (331) 310-8471 and a live person answers, 24/7.
Why Nashua Calls Novak Lock & Security for Lock Work
The dispatcher who answers your call is the one who quotes your price. That’s not a convenience; it’s Haven Standard Clause 1, the rule Daniel Novak put in place in 2002: the price on the phone is the price on the invoice. Our technicians are not permitted to change the number at your door, and they carry the written quote with them. When we finish a rekey or lock installation in Nashua, you get a documented photo record of the work, the hardware condition we found, and the parts we installed. That’s standard, not an upgrade.
We work the whole city, from the Millyard conversion lofts near the river to the postwar ranches east of Main Dunstable and the newer subdivisions pressing toward Hollis. Nashua is our daily route, not a far-flung dispatch zone. The same crews that handle emergency lockouts on Amherst Street in January are rekeying condos off Broad Street in July. And because Nashua sits directly on the Massachusetts border, we see the full mix: high-turnover rental units, tax-free retail storefronts, and tech offices in the old mill buildings. Our Lock Installation & Rekey team carries the hardware and the documentation for all of it.
Our Lock Installation & Rekey Services in Nashua

Smart Lock Installation
Smart locks in Nashua have to survive moist wood, ice, and a door frame that may have been shifting since the Coolidge administration. The biggest mistake we see is a deadbolt with a standard tailpiece forced into a frame that isn’t square, which burns out the motor in a year. We route or replace the strike, shim the frame, and set the lock so the latch retracts without binding. In Nashua condos built during the 1970s construction wave, we commonly swap entry-grade hardware for Yale or Schlage smart deadbolts and leave the property owner with a written record of every code and connected device.

Keypad Lock
Keypad locks make sense in multi-unit Nashua buildings where turnover is constant and tracking physical keys is a full-time job. A keypad with a deadbolt is a mechanical upgrade: you get an audit trail, deletable codes, and no key ring for the cleaner or dog walker. We install them on the dense apartment buildings along the tree streets and on single-family homes where an owner wants a code for a contractor on a schedule. Dan Novak’s rule applies here too: the keypad model, cylinder grade, and install labor are all priced on the phone.

Biometric Lock
Fingerprint locks work in Nashua, with one caveat: wet or icy fingers read poorly, so we recommend a model with a numeric backup and tell you that plainly before you buy. In Millyard loft spaces with high daily traffic, a biometric lock with managed cloud access is often the right call for the street-level door. We stock and service Medeco and Baldwin biometric units and price them the same way we price a mortise rekey: written, beforehand, and with no doorstep surprise.

Electronic Lock & Key Duplication
Electronic locks span everything from a basic keypad deadbolt on a garage door off Tinker Road to full access-control panels in Route 3 retail suites. We install, service, and rekey electronic hardware, and we duplicate standard keys on site in the van. When a Nashua landlord needs six copies of a common-area key cut to a restricted blank, we do it from stock and log every duplicate. If you have a key stamped “do not duplicate,” we can still help if you can prove you own the door. Otherwise, we won’t.

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 Nashua
We’re factory-authorized on Medeco, Mul-T-Lock, Baldwin, and Yale hardware, and we service Schlage and Kwikset every day. For Nashua’s older buildings, we keep a working inventory of mortise cylinders, skeleton-key conversion kits, and extended-throw deadbolts that won’t fit a standard door frame. That local stock is the difference between a two-hour job and a two-day job. If a Tree Streets triple-decker needs three Baldwin mortise cylinders re-pinned to a new master key, we don’t order parts. We have them in the van.
Common Lock Installation & Rekey Problems in Nashua Homes

- Iced-over exterior deadbolts in late winter. Nashua gets 60-70 inches of snow a year, and the freeze-thaw cycling from February into March refreezes moisture inside lock cylinders. We carry a de-icing spray and a low-torque pick set for non-destructive entry, and we’ll diagnose whether the cylinder needs rekeying or the whole deadbolt is shot.
- Swollen wood frames on pre-1920 housing that knock strike plates out of alignment. The Tree Streets grid, Crown Hill, and the South End are full of mill-worker housing with original pine door frames. When the wood swells, the deadbolt won’t latch. The fix is rarely a new lock; it’s a repositioned strike plate and a properly shimmed frame.
- Uncontrolled key copies in multi-unit apartment buildings. A tenant moves out, and the manager realizes nine copies of the building key were made at a hardware store over the last three years. We rekey the affected cylinders and move the building to a restricted key system so future duplicates require the property manager’s ID and signature.
- Out-of-plumb door frames in the Millyard’s converted mill buildings. The original Jackson Mills timber frames have not been square for a century, and a standard deadbolt’s throw is often too short to fully seat. We carry extended-throw deadbolts and heavy-duty strike-plate shim kits specifically for those buildings.
Pricing for Lock Installation & Rekey in Nashua, NH
| Service | Typical Nashua Range |
|---|---|
| Standard deadbolt rekey (per cylinder) | $25-$45 |
| Mortise lock rekey (per lockset) | $55-$95 |
| Smart lock installation (labor only) | $110-$180 |
| Keypad deadbolt installation | $95-$160 |
| Restricted key system setup (per building) | $280-$450 |
You’ll get the exact price for your Nashua job on the phone before anyone is dispatched, and that is the price on the invoice. No call-out surcharge added at the door. Every quote includes labor, hardware, and documentation, and we’ll review any competitive written estimate at no charge. Call (331) 310-8471 for a free estimate; if you have a written quote from another shop, bring it, and we’ll look at it.
We Also Serve Cities Near Nashua

Our crews cover Nashua and the surrounding southern New Hampshire market. For work in Lock Installation & Rekey territory just north of the border, we regularly handle rekeys and lock replacements in Manchester, including the intown apartment districts and the Elm Street commercial corridor. If you’re in a city near Nashua, call (331) 310-8471 and we’ll tell you our next available slot.
Serving Nashua, NH - Our Local Coverage Area
We’re based in the Nashua 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 Nashua

Yes. We re-pin the existing mortise cylinder, key it to your new key, and leave the original lockset intact. In the Millyard’s converted Jackson Mills buildings, we routinely rekey 1910s mortise locks without disturbing the brass faceplate or the original timber frame. The old keys go dead, the door stays original, and the cost runs $55-$95 per lockset. Call (331) 310-8471 for a firm quote before we come out.
Under New Hampshire law, a tenant cannot change or rekey a lock without providing the landlord a key, unless the lease says otherwise. Most Nashua leases require landlord consent before a rekey. We handle this by coordinating with your property manager: we rekey the cylinder, cut new keys, and hand the manager their copy. If your landlord wants to hire us directly for the whole building, we’ll price that as a separate written scope.
An extended-throw deadbolt, typically a Schlage B660 or a Medeco Maxum with a 1-inch throw, plus a heavy-duty strike plate shimmed to meet the latch. In Nashua’s Millyard lofts and older downtown buildings, a standard 1/2-inch deadbolt often won’t fully engage because the frame has shifted. We carry extended-throw units and strike shim kits in the van for exactly this reason.
Yes, and we do it regularly for Tree Streets condos and Millyard conversions. We set up a restricted keyway, usually Medeco or Mul-T-Lock, and register you as the authorized signer. Any future duplicates require your written authorization and ID; a hardware store cannot cut the blanks because we control them. Setup runs $280-$450 per building on average, with per-key pricing added in writing before we start.
Typically within 30-45 minutes for emergency calls in Nashua during business hours, and somewhat longer overnight depending on where our nearest technician is. We open the lock without drilling the cylinder when the ice is outside, using controlled heat, lubrication, and low-torque picking. If the cylinder is cracked or the internal pins are seized, we’ll tell you what we found and quote a rekey or replacement before touching the door. Call (331) 310-8471 and a live dispatcher will give you an honest ETA.
Written by Daniel Novak, Owner at Novak Lock & Security, serving Nashua since the company’s founding in 2002.






