Key Takeaways
Summary
22 items · 20–40 minutes
Why the Checklist Comes Before the Cart
Smart locks are one of the more satisfying home tech upgrades — until you realize the one you ordered doesn't fit your door, or drops its Wi-Fi connection three feet from the router. The good news: nearly every common installation headache is preventable with a few measurements and a handful of straightforward questions answered before you buy.
This checklist walks through four critical areas: door and deadbolt compatibility, connectivity requirements, access method planning, and ownership considerations. Work through each group and you'll arrive at the purchase decision with confidence rather than guesswork. If you're evaluating any tech purchase more broadly, the framework in our pre-purchase evaluation checklist applies here too.
Door & Deadbolt Compatibility
Connectivity & Hub Requirements
Access Methods & Backup Entry
Ownership, Permissions & Long-Term Fit
Tools You'll Need for This Audit
You don't need specialized expertise to run through these checks — just a few basic measuring and testing tools. Gather these before you start so you can move through the checklist without interruptions.
Tape measure
Measure backset distance, door thickness, and bore hole diameter accurately.
Wi-Fi analyzer app
Test wireless signal strength at the door location to identify dead zones before purchasing.
Flathead and Phillips screwdrivers
Remove the existing deadbolt to inspect the door prep and verify bore hole dimensions.
Smartphone with manufacturer's compatibility tool
Run through the lock brand's official compatibility checker to confirm fit with your door hardware.
Door alignment shim or strike plate adjustment kit
Correct minor door misalignment before installing a motorized lock to prevent latch stress.
Key Compatibility Warnings to Keep in Mind
Two areas deserve extra caution before you commit to a purchase.
Double-Cylinder Deadbolts Are Not Compatible
If your current deadbolt has a keyhole on both the interior and exterior sides, it is a double-cylinder lock. Virtually all consumer smart locks are designed to replace single-cylinder deadbolts only. Installing a motorized lock in a double-cylinder application is not supported and may void the warranty. You will need to replace the deadbolt hardware first before any smart lock will fit correctly.
Non-Standard Doors Require Extra Research
Fiberglass, steel-clad, and solid-core doors with non-standard thickness or bore patterns may not work with off-the-shelf smart locks without an adapter kit. Verify exact specifications with the manufacturer before purchasing, and be aware that some adapters affect how the lock sits flush against the door surface — which can impact both function and appearance.
Once you've confirmed compatibility and connectivity, your smart lock becomes a natural first node in a broader smart home setup. Our guide on setting up a smart home for the first time covers how to extend that foundation without creating ecosystem conflicts. And if you travel frequently, pairing remote lock access with the steps in the pre-departure checklist can give you meaningful peace of mind before any trip.
Don't Skip the Backup Entry Check
A smart lock with no physical key override or keypad backup can leave you locked out during a power outage, dead battery, or app failure. Always confirm that at least one offline or non-digital entry method exists before purchasing. This is especially important for households with elderly residents or young children who may not have reliable app access.
Cloud Dependency Can Be a Hidden Risk
Some smart locks require an active internet connection and cloud service to unlock remotely — or even locally via the app. If the manufacturer discontinues the service or the app loses support, the lock's smart features may stop functioning. Review the product's terms of service and look for models that offer local operation as a fallback.