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Residential Locksmith in Gaithersburg & Montgomery County, MD

House lockouts, rekeying, lock repair, deadbolt and smart lock installation in Gaithersburg and Montgomery County, MD. One key for every door. Call 240-701-6448.

Residential entry door lock serviced by A1 All Locksmith DMV

What this actually involves

Rekeying and replacing are not the same thing, and the difference is most of the money. Rekeying keeps the lock on your door and changes which key turns it — the cylinder is taken apart, the pins are changed, you get new keys and the old ones stop working. Replacing throws away working hardware. For anyone who has just moved in, or lost a key, or had a tenant or a roommate leave, rekeying is almost always the right answer and it costs a fraction of the alternative.

The one-key question comes up on nearly every visit. Most houses in this area have a front door, a back or patio door, and a garage entry door that the builder fitted on a different keyway for no reason anyone can explain. Those can normally all be rekeyed to a single key in one visit. The exception is when two cylinders are genuinely different keyways, and then one has to be changed to join in — which is worth knowing on the phone rather than discovering on the doorstep.

New construction deserves its own warning. In Clarksburg, Cabin Branch, Urbana Highlands and every other recent development, houses are handed over keyed alike across a whole phase, and during construction that key was held by framers, painters, cleaners, inspectors and the sales office. If a keypad came pre-fitted, the default code is often identical across the development too. Rekey the cylinder and change the code, and do both rather than one.

Not every stiff door is a lock fault. In older housing stock across Takoma Park, Chevy Chase and downtown Frederick, the most common call is a door whose frame has moved with the season so the bolt no longer lines up with the strike. That is an alignment adjustment, sometimes a longer screw into the stud, and it is far cheaper than the new lock people expect to be sold.

What is covered

  • House and apartment lockouts
  • Rekeying — keep the lock, change the key
  • One key for every exterior door
  • Deadbolt supply and installation
  • Lock repair, latch and strike alignment
  • Smart lock and keypad installation and setup
  • Move-in and tenant-turnover security changes
  • Mailbox, patio door and sliding door locks
  • Master keying for multi-unit properties

Hardware and key types worked on

  • Kwikset, Schlage, Baldwin, Defiant, Yale
  • High-security and restricted keyways: Medeco, Mul-T-Lock
  • Keypad and smart deadbolts with physical key override
  • Mortise and rim locks in historic doors — repair and re-pin rather than replace
  • Multipoint locks on French and patio doors
  • Reinforced strike plates and longer-throw bolts

What it costs

Rekeying is priced per cylinder and gets cheaper per door the more doors are done in one visit, which is why it is worth counting them before you call. Lock replacement is priced by the hardware. House lockouts start at $89. Estimates are free.

Nothing here is a bait price. The number is quoted on the phone before a technician is dispatched, and confirmed on site before any work begins. If those two numbers ever differ, say so and stop the job.

How the call goes

  1. 1Count your exterior doors before you call — front, back, side, garage entry — because that is what sets the price
  2. 2Say whether you want to keep the existing locks (rekey) or change the hardware (replace)
  3. 3Describe the symptom precisely: key will not turn, key turns but door will not open, lock is loose, door will not latch
  4. 4You get a price on the phone before a technician is dispatched
  5. 5The technician walks the doors with you and confirms the keying plan before touching anything
  6. 6Every lock and every new key is tested at every door before the visit ends

What customers said about residential locksmith

Copied from the Google Business Profile, unedited. Google's own review topics on that profile put key programming at 23 mentions, "llave remota" at 13 and car key replacement at 8, which is a fair summary of what this business gets called for.

  • Jeffrey Addo

    5 out of 5 ·

    Ronald Ferman did an amazing job! Quick work in replacing my car keys highly recommended!

    Work done: Car key replacement

    Reply from A1 All Locksmith DMV

    Thank you for the great review! We're happy our fast car key replacement service could help. We appreciate your recommendation and are always here for any automotive locksmith, lost car key, or key fob replacement needs.

  • Benjamin Zetts

    5 out of 5 ·

    Super fast, professional and affordable. I can’t recommend them enough. Will definitely use their services again.

    Reply from A1 All Locksmith DMV

    Thank you for your kind words. We are glad you were happy with the fast, professional, and affordable locksmith service. Providing reliable lock and key solutions with quick response times is always our goal. We truly appreciate your recommendation and look forward to helping you again.

  • abdoul mbengue

    5 out of 5 ·

    this should be your first pick ! super quick service ! came in 10 minutes! a lot of helpful tips and honest great guy

    Reply from A1 All Locksmith DMV

    Thank you for the fantastic review! We're glad we could provide fast and reliable locksmith service when you needed it most. Arriving quickly and offering helpful advice is always our goal. We truly appreciate your trust and are happy to hear you had a great experience with our emergency locksmith service. If you ever need help with lockouts, lock repair, key replacement, or automotive locksmith...

  • Alessandra V

    5 out of 5 ·

    I lost my only car key and contacted A1 Locksmith DMV. The response was amazing — very professional, great customer service, arrived on time, and offered a great price. I highly recommend them!

    Work done: Car key replacement

    Reply from A1 All Locksmith DMV

    Thank you for the amazing feedback. We are glad we could help with your lost car key and provide fast, professional locksmith service at a great price. Offering reliable car key replacement, quick response times, and excellent customer service is always our goal. We truly appreciate your recommendation!

Read all 387 reviews on Google →

Frequently Asked Questions

Should I rekey or replace my locks?

Rekey, in most situations. Rekeying keeps the hardware on your door and changes which key operates it, which is what you actually want after a move, a lost key, a tenant change or a roommate leaving. Replacing only makes sense when the hardware is worn out, damaged, or you want a different grade of security. If someone quotes you a replacement for what is plainly a rekey, ask why.

Can every door in my house use the same key?

Usually yes, and it is one of the most common requests. Every cylinder that shares a keyway can be rekeyed to one key in a single visit. Builders routinely fit the garage entry door on a different keyway, and that one needs a cylinder change to join the set. Count your exterior doors before calling and mention the garage door specifically.

I just bought a house. Do I really need to rekey?

Yes. You have no way of knowing how many keys exist or who holds them — previous owners, their family, contractors, a cleaner, a dog walker, an agent. On a new build it is worse, because the whole phase is often keyed alike and every trade on the site had that key. Rekeying is the cheapest security decision you will make on a house.

My door will not latch properly. Is the lock broken?

Probably not. In older houses the frame moves with humidity through the year and the bolt stops lining up with the strike. That is an alignment fix — reposition the strike, sometimes a longer screw into the stud behind it — and it costs a fraction of a new lock. If the key turns freely but the door will not stay shut, say exactly that on the phone.

Are smart locks worth it?

They solve a real problem — codes for family, cleaners or a rental, no key to lose — and they introduce a new one, which is batteries and firmware. Buy one with a physical key override, keep a metal key somewhere you can reach it, and change the default code immediately. A keypad that came pre-fitted with the house is running a code that was in the builder's paperwork.

Can you add a deadbolt to a door that has never had one?

Usually. What decides it is the door thickness and how much solid material sits around the edge, because a deadbolt in a door that cannot hold it is decoration. On a historic door that sometimes means a reinforced strike and a longer throw rather than the largest lock available. The technician looks at the door before cutting into it.

I am a landlord with several units turning over. How does that work?

As one booking rather than several call-outs, which is cheaper per unit. Existing cylinders are rekeyed rather than replaced, each unit gets its own key, and the building can keep a master if you want one. Send the unit list and the door types and you get one price for the visit.

Can you rekey an antique lock without replacing it?

Usually. Mortise and rim locks in older doors across Chevy Chase, Brookeville and downtown Frederick can normally be cleaned, repaired, re-pinned or rekeyed with the original case and hardware left in place. It takes longer than a modern cylinder and is priced accordingly. If a case is genuinely worn past saving you are told that, along with what a sympathetic replacement involves.

Need residential locksmith help?

Call A1 All Locksmith DMV 24/7 on 240-701-6448, or send a request with your address and the details.

Text UsCall Now: 240-701-6448