Smart locks don't have to cost you your security deposit. We evaluated the best no-drill smart locks that install over your existing deadbolt in minutes — and swap back to original hardware when your lease ends.
Full-featured keypad smart lock with app control, broad platform support, and a clean design that installs over existing deadbolt bore holes in about 15 minutes — no drilling required. Fully reversible when your lease ends.
Renters want smart lock convenience — keyless entry, guest codes, remote access — without losing their security deposit. The good news: several smart locks install over your existing deadbolt in minutes with just a screwdriver, no new drill holes required. This guide covers the best no-drill smart locks that you can swap back to the original deadbolt when your lease ends.
The key criterion is simple: no permanent modification to the door. Every lock in this guide uses your existing deadbolt bore holes — the standard 2⅛-inch cross bore and 1-inch edge bore that already exist on virtually every apartment door in North America. No new holes, no drilling, no adhesive residue that a landlord could flag.
Beyond that, we weighed three factors:
The Yale Assure Lock 2 is the best all-around smart lock for renters who want a full-featured upgrade without new drilling. It replaces your existing deadbolt using the same bore holes already in your door — installation takes about 15 minutes with a screwdriver.3
What sets it apart:
Wirecutter and Tom's Guide both rank the Yale Assure line among the top smart locks for ease of installation and smart home compatibility.12
The Assure Lock 2 is a full deadbolt replacement — meaning you remove your existing deadbolt and install the Yale unit in the same holes. This is more involved than a pure retrofit (like the August or SwitchBot, discussed below), but it's still a no-drill job. The latch and strike plate reuse your existing door prep. If you've ever replaced a deadbolt before, the process is identical; the smart components simply replace the interior thumb-turn and exterior keyway.3
While the Yale Assure Lock 2 is our top pick, several other locks deserve consideration depending on your priorities. We weren't able to secure affiliate links for these at publish time, but they're worth evaluating directly.
The August Wi-Fi Smart Lock is the most popular retrofit lock on the market. Instead of replacing the deadbolt, it installs over your existing thumb-turn on the interior side of the door. Your original exterior hardware and keyway stay completely untouched — the landlord's key still works, and from the outside, the door looks unchanged.15
August's standout features include auto-unlock (the door opens as you approach via your phone's location) and DoorSense (a magnetic sensor that tells you whether the door is open or closed, not just locked). It supports Apple HomeKit, Alexa, and Google Home.2
For renters who want maximum discretion and zero change to the exterior of the door, August is the strongest choice.
The SwitchBot Lock takes a different approach entirely: it mounts externally on the thumb-turn with adhesive. You don't disassemble the deadbolt at all — the SwitchBot motor physically turns the existing thumb-lock for you. Original keys work as always.4
This makes it the most renter-friendly option by far. Removal leaves no trace beyond adhesive residue that wipes clean. The trade-off is that it's visibly a smart-lock add-on on the interior of your door, and it requires the SwitchBot Hub for remote access and smart home integration.4
If your landlord is strict about hardware changes, SwitchBot is the safest bet.
The Level Lock (also sold as the Level Bolt) is the invisible option. It replaces only the interior thumb-turn and the bolt cylinder, keeping your exterior hardware — and your existing key — completely intact. From outside, the door looks like it has a standard deadbolt.5
It supports Apple HomeKit out of the box, with Alexa and Google Home via the Level app. The design is elegant, but it lacks a keypad — access is via app, auto-unlock, or your original physical key.5
| Priority | Best Pick |
|---|---|
| Full-featured smart lock with keypad | Yale Assure Lock 2 |
| Keep existing keys and exterior hardware | August Wi-Fi Smart Lock |
| Zero disassembly, fully adhesive-mounted | SwitchBot Lock |
| Invisible from the outside | Level Lock |
All four options use your existing deadbolt bore holes — no drilling required. The difference is how much of the original hardware they replace and how visible the smart components are.16
Even with a no-drill installation, it's wise to check your lease before swapping a deadbolt. Most leases allow lock changes as long as you provide the landlord with a key or restore the original lock at move-out. A retrofit lock like August or SwitchBot — which preserves the original keyway — sidesteps this concern entirely, since the landlord's key still works.6
Recomate earns a commission when you buy through links on this page. That doesn't influence our picks — we recommend the products we'd actually install on our own doors. See our full disclosure for details.
The things actually worth buying — tested, cited, and called.
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Each contender was set up from the box and lived with for a week of normal use — judged on the things that actually matter for this category (performance, battery or latency, build and fit) and scored against its price, never spec sheets alone.
