Nobody Should Still Be Hiding a Spare Key Under the Mat
Keys under the mat, dark porches, packages you never see arrive. Here is how to fix each one with smart home hardware from Home Depot, in the right order.
This article contains affiliate links. We may earn a commission if you buy through them, at no extra cost to you.
The spare key under the mat is doing a lot of work
Think about how many people have needed into your house this year. The dog walker. The plumber. Your sister, the weekend you were away. Each time, the answer was the same: hide a key, text a photo of where it is, hope it comes back. A copied key is permanent. You cannot take it back, and you cannot tell who used it.
A keypad deadbolt turns that into a number you can give out and change afterwards. The contractor gets a code for Tuesday. The dog walker gets one of their own. Nothing sits under a rock by the step.
This is not niche hardware you have to hunt down. Electronic Door Locks appears among the popular categories on Home Depot’s own site, listed alongside windows, flooring and ceiling tiles.
Measure before the old lock comes off
The worst version of this project is the one where the door is open, the old deadbolt is in a bag on the floor, and the new one does not fit. Ten minutes of checking first avoids that.

Before you buy, note the thickness of your door, the size of the existing bolt hole, which way the door swings, and what is already bored through it. Then read the specification section of the listing and match it against what you wrote down.
If you are unsure, Home Depot publishes DIY Projects & Ideas, runs a Customer Service Center, and lets you text 38698 for help. There is also an Installation & Services section if you would rather someone else did the drilling and you just wanted the thing working by dinner. Hardware, Doors & Windows and Electrical each have their own departments, so the screws, strike plates and anything else the job turns up are in the same trip.
Work through the annoyances in order
Do not try to smarten the whole house in one weekend. Rank the problems by how often they irritate you and buy in that order.
The lock usually comes first, because key logistics is the daily friction. A camera or video doorbell at the front door answers the next one: the parcel left on the step becomes something you see rather than something you discover. Then the porch itself, because a dark entrance at six in the evening is its own small problem, and that is a lighting fix.
Home Depot keeps Smart Home as a department in its own right, with Lighting & Ceiling Fans, Electrical, and Doors & Windows listed nearby. You can price the whole sequence in one place and buy the stages as your budget allows, rather than committing to a full system up front. The weekly ad and the Specials & Offers section are worth a look before you order any of it.
Renting changes what you buy first
If the front door is not yours to modify, invert the order. Start with the things that come with you when you move and leave no mark behind. Lighting and plug-in devices do a good deal of the useful work without touching the door at all. A lit porch and lamps you can switch on from your phone solve the evening-arrival problem on their own.

If you do swap a lock with a landlord’s blessing, keep the original in a labelled bag with all its screws, so you have every part when it is time to put it back.
Buying this way keeps your first spend small. You are finding out whether you like living with the hardware before you commit to the parts that involve a drill, and nothing you buy at this stage is wasted later.
Buy it locally, finish it the same day
This is the argument for a store over a shipment. Once the old deadbolt is out, you want the new one in your hands, not in a van. Home Depot runs a Store Finder and lets you select a store, so you can check what is near you before you pick up a screwdriver, and its support pages cover Pickup, Shipping & Delivery along with order status. Worth knowing: the site notes that items shown as available are normally stocked but inventory levels cannot be guaranteed, and that local store prices may vary from those displayed. Check both before you drive over.
The low-risk way to begin is one keypad deadbolt, or one smart bulb if you are renting. Home Depot publishes a Return Policy and a Refund Policy, so a purchase that does not suit your door is not a dead end. Pick the single thing that annoys you most, buy that, and go from there.