Cost to Install a Deadbolt Lock – 2021

| Last Updated: August 21, 2021

National Average Improvement and Repair Cost







$ 158

$ 75

Would you do this project? According to our survey, 42% of respondents preferred DIY compared to hiring a pro.

The average price to Install a Deadbolt Lock noted above is cost data to compare a contractor’s estimate with doing it yourself.

How much is a deadbolt lock? A locksmith charges $158 to install a deadbolt lock vs. doing it yourself for $75 and saving 55 percent. 

To add to the all-around security of your home, add deadbolt locks to your front, side and backdoors. A cylinder deadbolt, operated by a key from the outside and a thumb turn from the inside, is a good choice to protect against intruders. While this lock design has been around for years, many new finishes are available, although traditional brass continues to be the favorite today.

A locksmith will replace an old lock with a good quality brass deadbolt lock for $158, which includes the labor and material. If you have basic carpentry experience, you can make the swap for $75, the cost of the lock, and save 55 percent.

Choose a deadbolt lock designed for a do-it-yourself installation, which includes a paper template you can tape onto the door to help align the holes for accurate cutting. Buy a door lock installation kit, which includes a hole cutter for a drill and a spade bit to bore smaller holes in the edge of the door.

If the new lock holes don’t line up with the old ones, plan on patching the holes and painting the door to conceal the patch. This involves several steps – applying a filler, building up the area to match the surface of the door, and sanding it smooth before painting. Do this after you’ve removed the old lock and before installing the new one.

Schlage has information videos at their How-to-center.

The average price to install a deadbolt lock noted above is cost data to compare a locksmith’s estimate with doing it yourself. 

Looking to further improve your home security? These DIY guides might help:

Welcome! We hope you’ll find the job costs of home improvement projects useful when you’re deciding whether to do a job yourself vs. hire a contractor. We’re the authors of 20 home improvement books, most notably Home Improvement for Dummies©, Bathroom Remodeling for Dummies©, Carpentry for Dummies©, Plumbing for Dummies©, and Painting and Wallpapering for Dummies©. Our most recent book Fix It and Flip It is in its second edition. We’ve appeared as home improvement experts on television programs such as CNN, Dateline, the Today Show, HGTV and many others.