The Renter's Dilemma
Smart locks are one of the most impactful smart home upgrades — but most require drilling new holes or replacing your existing deadbolt, which landlords typically forbid. We tested 6 smart locks that install over your existing hardware, require zero drilling, and can be completely removed when you move out.
Top Picks
1. August Wi-Fi Smart Lock (4th Gen) — Best Overall
The August attaches to your existing deadbolt's interior thumbturn, requiring only two screws into the existing holes. Installation takes 10 minutes. The built-in Wi-Fi means no bridge needed, and the auto-lock/unlock feature works flawlessly.
2. SwitchBot Lock Pro — Best Budget Option
At under $100, the SwitchBot Lock Pro offers fingerprint, keypad, app, and NFC card access. It uses strong 3M adhesive (no screws at all) and works with Matter via the SwitchBot Hub 2.
3. Yale Assure Lock 2 — Most Secure
While it replaces the interior mechanism, the Yale uses your existing deadbolt and strike plate. The keypad is sleek, and Home Key support (Apple) makes it the most seamless option for iPhone users.
Security Considerations
All tested locks use AES-128 encryption and have been independently audited. However, we recommend enabling two-factor authentication on the companion app and regularly updating firmware.
What to Check Before Buying
Measure your deadbolt's backset (usually 2-3/8" or 2-3/4"), check that your door swings freely (smart locks add slight resistance), and verify your lease allows interior modifications.
