Before you buy a smart lock, the most useful thing you can do is check compatibility: will it physically fit your door, will it talk to the phone and smart-home system you already use, and is your door in good enough shape for a motorised bolt? This guide is a step-by-step compatibility checklist, followed by an honest look at which installs are reasonable DIY jobs and which are better left to a locksmith.

Want someone to check your door first? Call (613) 707-4884.

Step 1: Measure Your Door

Most smart deadbolts sold in Canada are designed for the standard North American door preparation. Grab a tape measure and check these four numbers before you order:

  • Cross bore (the large hole through the face of the door): usually 2-1/8 inches (54 mm). Some locks also accept a smaller 1-1/2 inch hole.
  • Edge bore (the hole in the door edge for the bolt): usually 1 inch (25 mm).
  • Backset (from the door edge to the centre of the cross bore): 2-3/8 inches (60 mm) or 2-3/4 inches (70 mm). Most smart deadbolts have an adjustable bolt for either.
  • Door thickness: typically 1-3/8 to 1-3/4 inches. Manufacturers list their own supported range; for example, eufy lists 1-3/8 to 2-1/8 inches (eufy compatibility requirements) and Schlage lists 1-3/8 to 2 inches for its Arrive model (Schlage door preparation specifications).

Always confirm against the specific model's published requirements before drilling or buying.

Step 2: Identify Doors That Need Special Handling

  • Mortise locks on older Ottawa homes and some condo doors do not accept a standard bored smart deadbolt without new holes or a mortise-specific product.
  • Multipoint locks on many newer fibreglass and patio doors need a smart lock made for that system, or a retrofit that drives the existing thumb-turn.
  • Handlesets often tie the deadbolt and the grip together with a shared plate, so the trim may need to change too.
  • Thin glass-panel or storm doors may leave no room for the interior unit or block the bolt.

Not sure what you have? Our guide to types of door locks will help you identify it.

Step 3: Choose How It Connects

Connectivity decides what you can do when you are away and which apps or voice assistants will work with the lock.

  • Bluetooth only: works from your phone at the door; remote access usually needs a separate bridge.
  • Wi-Fi: remote access without a hub, but strong signal at the door matters and batteries tend to drain faster.
  • Z-Wave or Zigbee: needs a compatible hub; common with alarm and home-automation systems.
  • Matter over Thread or Wi-Fi: Matter is an industry standard from the Connectivity Standards Alliance that lists door locks as a supported device type and runs over Wi-Fi, Thread and Ethernet, aiming to let devices from different brands work together (CSA Matter overview). Check that your own hub or speaker supports Matter locks before relying on it.

Step 4: Check the Door and Frame

A motorised bolt is far less forgiving than your hand. Close the door and lock the existing deadbolt with the key: if you have to push, pull or lift the door to make it turn, a smart lock will jam or drain batteries. Fix hinge sag, strike alignment and weatherstripping first. Our newer article, Smart Lock Installation in Ottawa: A Homeowner's Guide, covers door preparation and winter reliability in more depth.

Step 5: Plan Your Backups

  • A mechanical key override, or at least an external emergency power contact.
  • A way to know when batteries are low and a habit of changing them before winter cold.
  • At least two people with admin access to the app, so one lost phone does not lock everyone out.

DIY or Professional Install?

Usually a reasonable DIY job

  • Replacing an existing, working deadbolt with a smart deadbolt on a standard-bored door.
  • Adding a retrofit unit that mounts over your existing thumb-turn.

Better handled by a locksmith

  • Doors with no existing deadbolt, or holes that must be drilled or enlarged.
  • Mortise, multipoint or handleset doors.
  • A bolt that binds, a strike that needs moving, or a frame that needs reinforcing.
  • Matching several doors or keying the backup cylinder to your existing keys.

If you rent or live in a condo, check your lease or building rules before changing an entry lock.

What Affects the Cost

Installation cost depends on the type of lock and door, whether new holes must be drilled, how much door and strike adjustment is needed, any hub or bridge required, and how many doors you are converting.

Next Step

If your door does not pass the checklist above, or you would rather not drill it yourself, see our smart lock installation service or call (613) 707-4884.