Door Locks

Door locks are the mechanical or electronic devices that secure interior doors throughout your home, helping you control access to rooms, closets, and private spaces. From classic passage knobs and privacy locks to modern keypad options, there's a style to suit every interior door and household need. Whether you need installation, replacement, or upgrades, Angi connects you with local pros and helpful guides to keep your interior spaces secure.

Related to Door Lock Service

Door Lock Service Articles and Advice
Xiao Faria daCunha  •  Apr 10, 2026
5 Common Signs Your Locks Have Been Tampered With and What to Do About It
Know the 5 common signs your locks may have been tampered with and take immediate action to improve home security and prevent a burglary.
Allie Ogletree  •  Apr 10, 2026
Are Smart Locks Safe? Full Guide
If you’re wondering if smart locks are safe, we've broken down the pros and cons of smart locks to help you decide if they could add more security to your home.
Kelly Weimert  •  Apr 10, 2026
Should You Change the Locks on a New House?
Adding new locks and keys helps you enjoy your new home. Here’s what you need to know about installation, locksmiths, and whether a lock change is a DIY project.
Sara Coleman  •  Apr 10, 2026
What Is a Double-Keyed Deadbolt Lock?
Is adding a double-cylinder deadbolt to an exterior door a good idea? Find out about the pros and cons of adding double-keyed deadbolts vs. single-keyed deadbolts to exterior doors for safety and security. Deadbolts with two keys pose unique challenges.
Samantha Hawrylack  •  Apr 10, 2026
Your Simple Guide to Different Doorknob Parts
Though small, a doorknob has many critical parts that all work together to keep a door secure. This guide breaks down each doorknob part in detail.
Taylor Sansano  •  Apr 10, 2026
How to Lubricate a Lock: 10 Ways to Unstick a Lock
Is your key stuck, and you need to know how to lubricate your lock? Look no further. This article outlines 10 ways to unstick a lock without calling a locksmith.
Jouviane Alexandre  •  Apr 10, 2026
What Is a Deadbolt?
Deadbolt locks add an extra layer of security. Learn about the different types and benefits so you can choose the perfect one to protect your home.
Jouviane Alexandre  •  Apr 10, 2026
Which Is Better: Rekeying vs. Changing Locks?
Rekeying or replacing your locks are upgrades you can make to boost your home’s security. Learn about their differences to decide which solution is best for you.
Find Locksmiths near you
Share your project details and we’ll match you with up to 3 available pros near you.
Common Door Lock Service Questions

Door locks should be changed roughly every seven years. The average lifespan of a door lock is seven to 10 years, so it’s best to err on the side of caution and change them early, especially if they are showing signs of wear and tear. Examples of deterioration include visible rust and difficulty opening or closing the door. Some locks can work safely beyond 10 years, but it depends on how often they are used and whether they are exposed to damaging environmental conditions like precipitation or extreme temperatures.

Smart door locks are safe to use and are usually considered safer than traditional locks with keys. While all electronic devices can be hacked, that doesn’t happen nearly as frequently in real life as people may think. You can also invest in multiple locks of different types for enhanced security so you don’t rely solely on one smart lock.

The cost-effectiveness of fixing or replacing a door lock depends on the severity of the issue. Repairing a minor problem, such as loose screws or a need for lubrication, is usually cheaper than replacing the entire lock. However, replacing the lock if it is severely damaged, outdated, or lacks security features may be a better long-term investment. New locks often have improved security features, enhancing your property's safety.

It’s possible, but depends on the design of your lock. Some door locks that lack a keyhole do boast a small hole on the exterior handle or knob. This hole’s primary function is to allow water to drain out of the lock, in addition to giving homeowners an easy spot to insert lubrication. However, you can typically use a paperclip in this pinhole to unlock the door by manipulating the mechanism inside. 

Yes, but adding a deadbolt to some door materials, like steel, may make installation a little bit trickier. For these materials, you will want to hire a locksmith to do the work for you, but be aware that they may charge an additional fee of $25 to $50 or more.