Residential Locksmith Services in Northern Virginia & DC
National Lock & Key provides trusted residential locksmith services throughout Northern Virginia. Whether you need a lock rekeyed, a deadbolt installed, or a smart lock set up, our licensed technicians are here to help — with upfront pricing and no surprises. Locally owned and operating since 2012. Rated 4.8 stars across 240+ reviews.
✓ Licensed & insured | ✓ Upfront pricing | ✓ Since 2012
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
Our Residential Locksmith Services
Lock Rekeying
Rekeying changes the internal pins of your existing lock so old keys no longer work — without replacing the hardware. It's the fastest and most affordable way to secure your home after moving in, losing a key, or changing tenants.
Lock Change
If your lock is damaged, worn out, or you want a security upgrade, we'll replace it with quality hardware that fits your door. We also install locks supplied by the customer — just bring your hardware and we'll take care of the rest.
Lock Installation
Adding a lock to a door that doesn't have one? We handle the full installation on any interior or exterior door — including deadbolts, gate locks, and sliding door locks.
Home Lockout Service
Locked out of your house? We use non-destructive techniques to get you back inside without damaging your door or lock. Call us to check availability in your area.
Smart Lock Installation
We install and configure smart locks, electronic deadbolts, and keypad entry systems so you can stop worrying about lost keys. Compatible with major smart home platforms.
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
-
We provide a full range of residential locksmith services, including lock rekeying, lock change, lock installation, smart lock installation, and home lockout service. We serve homeowners throughout Northern Virginia and DC — including Reston, Herndon, Ashburn, Fairfax, Chantilly, Sterling, McLean, Arlington, Great Falls, and Falls Church
-
If your lock hardware is in good condition, rekeying is the faster and more affordable option — it changes the internal pins so old keys no longer work. Lock replacement makes more sense if the hardware is damaged, outdated, or if you want to upgrade to a higher-security option. Not sure? Call us and we'll walk you through it.
-
Yes. We install and configure smart locks, electronic deadbolts, and keypad entry systems from major brands. We'll make sure the lock is properly installed and working before we leave.
-
National Lock & Key is in business since 2012. Fully licensed, bonded, and insured to work in Virginia, Maryland, and Washington, D.C. VA DCJS #11-7496 · MD #134 · DC #400318002092.
Need a residential locksmith?
Call us to check availability. We serve all Northern Virginia and DC.
Mon–Fri 8:30am–6pm · Sat 9am–2pm
Last updated: April 2026