How to Use the Smart Door Lock Cost Calculator
Replacing a standard deadbolt with a smart lock usually comes down to one question first: is it cheaper to buy the unit outright or to subscribe to a monthly plan? This calculator lets you pick a plan type — outright purchase or monthly subscription — and enter the relevant costs. For a purchase, that's the product price and installation fee; for a subscription, it's the initial install fee, monthly fee, and how long you expect to use it.
Buying outright means a larger upfront cost but no ongoing payments, so it tends to be cheaper in total if you plan to stay in the same home for 3 years or more. A monthly subscription, on the other hand, often comes with a waived or reduced install fee and includes free support or battery replacement, which can make it the more convenient choice if you rent and expect to move before too long. The tradeoff is that subscription fees add up over time and can eventually exceed the cost of just buying the lock, so it's worth entering a realistic usage period rather than an optimistic one.
If the subscription total comes out much higher than a purchase would, it may be worth switching to buying outright or shortening your expected usage window in the calculation. Conversely, if you move often, the subscription's flexibility and included support may be worth paying more for. See the FAQ below for more on choosing between the two and what happens when a subscription contract ends.
Frequently Asked Questions
If you plan to stay 3+ years, buying outright is usually cheaper in total. If you rent and move often, a subscription with a low or waived install fee and included support can be more convenient despite a higher long-run cost.
It depends on the product and installer. Outright purchases usually charge installation separately, while subscription plans often run promotions that waive or reduce the initial install fee — confirm this before signing a contract.
Most plans either transfer ownership to you once the term ends or require you to return the unit for removal. Check your contract for ownership-transfer terms and any early-termination fees before signing up.