Need a key copied or replaced in Washington, DC? A standard house key is copied in a few minutes. If you have lost every key, a locksmith can originate a new one from the lock itself, and for most people rekeying at $45+ per lock is the smarter move. Mr. Locksmith DC: (202) 630-4979.
“Key duplication” covers two very different situations, and confusing them is why people end up paying for the wrong service.
Duplication means you have a working key and want another. Replacement means you have none, and a new key has to be created from the lock or the vehicle. The first is a quick counter job. The second is real locksmith work.
What kinds of keys can be copied?
- Standard house and office keys — Kwikset, Schlage, and similar. Copied in minutes on a standard machine.
- High-security keys — Medeco, Mul-T-Lock, ASSA ABLOY, and other restricted keyways. These are deliberately hard to duplicate; that is the point of them. Copying requires an authorized dealer and usually proof that you own the lock.
- “Do Not Duplicate” keys — the stamp carries no legal force, but reputable locksmiths honor it, and if the key sits on a restricted keyway it cannot be copied anyway without authorization.
- Mailbox and cabinet keys — straightforward, though USPS cluster-box keys are a postal matter, not a locksmith one.
- Car keys — a category of its own, covered below.
Why does a hardware-store copy sometimes not work?
Because a copy of a copy drifts. Every duplication introduces a small amount of error in the cut depths, and by the third generation the key may bind, turn stiffly, or fail entirely in one lock while working in another.
The fix is to duplicate from the original, not from a copy. If the original is long gone, a locksmith can decode the lock and cut a fresh key to the factory specification — a genuinely new original rather than another degraded generation.
The other common failure is a mis-cut blank from a high-volume self-service kiosk. Those machines have no operator checking the result, and a key that is close but not correct will wear the lock’s pins over time.
I lost all my keys. Now what?
Two options, and the right one depends on whether the lost keys are a security problem.
Key origination — the locksmith decodes or disassembles the lock and cuts a working key to match. You keep your existing hardware and your existing key. This makes sense when the keys were simply misplaced somewhere you trust, like inside your own home.
Rekeying — the locksmith changes the pins inside your existing lock so the old keys stop working, and provides new keys. At $45+ per lock this is usually the better call, because if your keys were lost on the Metro, dropped in a bar on U Street, or stolen with your bag, whoever has them may also have something with your address on it.
A useful rule: if you cannot say with confidence where the keys are, rekey. The cost difference is small and the peace of mind is not.
How does car key replacement work?
Car keys stopped being simple metal in the late 1990s, and cost now depends almost entirely on the type:
- Basic mechanical key (older vehicles) — cut from the lock or VIN, no programming
- Transponder key — contains a chip the car must recognize; requires cutting and programming
- Remote head key / flip key — transponder plus integrated remote buttons
- Proximity fob / push-to-start smart key — the most complex and most expensive to replace
A mobile automotive locksmith can usually originate and program a replacement at your vehicle, which is why it beats towing to a dealership on both cost and time. Car key replacement starts at $175+, and the final price depends on the key type, make, model, and year. Key duplication starts at $15+. Call (202) 630-4979 with your year, make, and model, or see our automotive locksmith services.
One piece of advice that will save you real money: get a spare made while you still have a working key. Duplicating an existing transponder key costs a fraction of originating one from nothing after the last key is gone.
How many spares should I have?
For a DC household, a practical setup looks like this: one key in daily use, one spare at your workplace or with a nearby friend, and — if you own the property — one in a discreet lockbox. Rowhouse owners in Shaw, Petworth, and Capitol Hill lean on lockboxes heavily, and they work well as long as the box is not mounted somewhere obvious next to the door.
If you rent out a unit or host guests, this is the point where a keypad or smart lock stops being a gadget and starts being a labor saver — you issue a code instead of coordinating a key handoff.
Frequently asked questions
Can a locksmith make a key without the original?
Yes. A locksmith can decode the lock and cut a new key to it, or disassemble the cylinder if needed. If security is a concern — lost or stolen keys — rekeying at $45+ per lock is usually the better choice.
Can you copy a key stamped “Do Not Duplicate”?
The stamp itself has no legal weight, but reputable locksmiths respect it and ask for proof of authority. If the key uses a genuinely restricted keyway such as Medeco or Mul-T-Lock, duplication requires authorization regardless of what is stamped on it.
How long does key duplication take?
A standard house key takes a few minutes. Originating a key from a lock takes longer, and car key programming typically runs 30–60 minutes depending on the vehicle.
Is it cheaper to rekey or replace a lock?
Rekeying is almost always cheaper — $45+ per lock versus buying and installing new hardware. Replacement makes sense when the lock is worn, damaged, or you want a security upgrade.
Can you make car keys for any make and model?
We cover the large majority of makes and models on the road in DC. Some very recent or high-end vehicles restrict key origination to the dealer. Call with your year, make, and model and we will tell you honestly before dispatching anyone.
Need keys made in DC?
Mr. Locksmith DC handles key duplication, key origination, rekeying, and automotive key replacement across all four DC quadrants, including Columbia Heights, Shaw, and Navy Yard.
Call (202) 630-4979 or explore our residential locksmith services.