Lock Installation in Northern Virginia & DC
Whether you're moving into a new home, upgrading outdated hardware, or adding a deadbolt to a door that doesn't have one, National Lock & Key installs locks correctly the first time. We work with a wide range of deadbolts, knob locks, lever sets, and smart locks across Northern Virginia and Washington D.C. — bring your own hardware or ask us about available options when you call. Rated 4.8 · 240+ reviews.
✓ Licensed & insured | ✓ Upfront pricing | ✓ Since 2012
What Is Lock Installation?
Lock installation covers two situations: adding a brand-new lock to a door that has never had one, and replacing existing hardware with a different lock — whether the old one is damaged, outdated, or simply not the right fit for the door.
In both cases, the job involves physically mounting the hardware, verifying alignment with the door frame and strike plate, and confirming the lock operates correctly before we leave. For doors with no existing bore holes, we drill and chisel the cutouts on-site.
A proper installation ensures the lock functions as intended and that the door resists forced entry. Most jobs take 20–45 minutes per door.
What our lock installation service includes?
Deadbolt installation — Single-cylinder and double-cylinder deadbolts for exterior doors
Knob and lever lock installation — Interior and exterior passage, privacy, and keyed-entry locks
Smart lock installation — Keypad and Bluetooth-enabled locks from brands like Schlage, Kwikset, and Yale
Lock replacement — Swapping out worn, damaged, or outdated hardware with a new lock of your choice
Multi-point lock installation — For French doors, patio doors, and sliding doors
New door prep — Drilling and chiseling when a door has no existing bore holes
Strike plate installation and reinforcement — Ensures the bolt seats properly and the frame holds under pressure
Lock Installation vs. Lock Change — What's the Difference?
Lock Change:
Door has a lock (either working or not) — you just want a different one
Uses existing bore holes
15–30 min per lock
Lock Installation:
Door has no lock, or existing hardware needs full replacement
May require new door prep (drilling)
30–45 min per lock
Why Trust
National Lock & Key
✓ 4.8 stars · 240+ reviews
Across Google and Yelp
✓ Locally owned & operated
No call centers, no outsourcing
✓ Upfront pricing
You know the cost before we start
✓ Licensed & insured since 2012
VA DCJS #11-7496 · MD #134 · DC #400318002092
Serving All of Northern Virginia & DC
We serve all of Northern Virginia and Washington D.C. — including Ashburn, Reston, Herndon, Fairfax, Arlington, McLean, Centreville, Sterling, Great Falls, Falls Church, Chantilly, Manassas, and Alexandria, and surrounding areas.
For full list of locations, see our full service area.
What Our Customers Are Saying
Frequently Asked Questions
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Most deadbolt and knob lock installations take 20 to 45 minutes per door. If the door has no existing bore holes and requires drilling, or if you're installing a multi-point lock on a French or patio door, plan for 45 to 60 minutes. Smart locks may take slightly longer depending on the model.
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Yes. We bring the tools to drill and chisel the necessary cutouts on-site. We'll also install and reinforce the strike plate if needed. Just let us know when you call so we can bring the right equipment for your door material.
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Yes. If you've already purchased a lock, we can install it — just have it ready when we arrive. If you'd prefer us to bring one, ask about available options when you call and we'll let you know what we have that fits your door.
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Lock installation is for doors that have no lock at all — we add the hardware from scratch, drilling new bore holes if the door doesn't have them. A lock change is for doors that already have a lock or an existing hole: we remove what's there and swap it out for a new one. If you're not sure which situation you have, give us a call and we'll help you figure it out before we come out.
Need a lock installed?
Call us to check availability. We serve all Northern Virginia and DC.
Mon–Fri 8:30am–6pm · Sat 9am–2pm
Last updated: April 2026