From everyday lockouts to full security upgrades, our certified local technicians treat every door, lock, and key with the care it deserves.
Services we do
Four core categories, one trusted local team — covering Derry and every
surrounding town with care and precision.
About Prolock
ProLock Locksmith is a family-owned company built on a simple promise: honest work, fair prices, and showing up when you need us most. Our technicians are background-checked, fully certified, and trained on the latest security technology — so whether you’re locked out or upgrading your business, you’re in expert hands
Years of Experience
Jobs Completed
Average Rating
Always Available
Services we do
4.9 average from 1,200+ reviews
“Locked out of my house late at night and they showed up within 20 minutes. Friendly, professional, and made a stressful moment so much easier.”
Sarah M.
Derry, NH
“Rekeyed every lock in our new home and installed a smart deadbolt. Clean work, clear explanations, and they took the time to walk us through everything.”
Mike R.
Londonderry, NH
“Used them for our office access control upgrade. Honest, knowledgeable, and the only locksmith I’ll call going forward. Highly recommended.”
Jen P.
Windham, NH
Questions & answers
Everything our customers commonly ask. Don’t see your question? Reach out
and we’ll happily help.
We’re based in Derry, NH and cover all surrounding towns including Londonderry, Windham, Salem, Chester, Hampstead, Auburn, and the greater southern New Hampshire region.
Yes — we’re fully licensed, bonded, and insured. Every technician is background-checked and certified, so you can feel confident inviting us onto your property.
Absolutely. Our emergency line is staffed around the clock, including weekends and holidays, for lockouts and urgent security issues.
In most cases, yes. We can cut keys from the lock itself, decode existing keys, or program transponder and fob keys for vehicles on-site.
We do. We install and configure all major smart lock brands and can integrate them with existing deadbolts or full home security setups.
Our technicians use non-destructive entry techniques whenever possible. In the rare case a lock must be drilled, we’ll always discuss the options with you first.
Trusted local locksmith and door specialists serving Derry & surrounding towns with honest, professional service.
37 Cyrstal Ave
Unit 5 Derry
New Hampshire 03038
Sun-Thu: 8AM-10PM
Friday 8AM-5PM
Saturday (closed)