Best Smart Locks for Apartments: Features, Installation, and Compatibility

Affiliate disclosure: some links on Gadget Sentinel are affiliate links. We may earn a commission at no extra cost to you. Our picks follow specs and fit, not commission rates.

Gadget Sentinel did not install or lab-test these locks. This guide combines manufacturer documentation, retailer spec sheets and independent reviewer findings, and labels each. Specs and prices were checked November 8, 2026. Our awards are editorial judgments, not test scores.

Renters need different smart locks from homeowners. You usually can’t drill, swap the exterior hardware, or keep a lock you can’t remove at move-out. You also need your landlord’s keys to keep working. That is why the best smart locks for apartments are mostly retrofit models that attach to your existing deadbolt, and why compatibility matters more than features.

Quick answer: For most renters with a standard single-cylinder deadbolt, our editorial pick is the August Wi-Fi Smart Lock. It mounts on the inside, keeps your key and needs no bridge. Pick the SwitchBot Lock Ultra for unusual locks, the Aqara U200 for Apple Home Key, and the Yale Approach on a budget. The Schlage Encode Plus and Yale Assure Lock 2 replace your whole deadbolt, so they need written permission. If you own your door, see our guide to the best smart locks for front doors.

Quick Comparison: Best Smart Locks for Apartments

Product	Best For	Installation Type	Existing Key Compatibility	Keypad	Fingerprint	Wi-Fi	Matter	Hub Required	Main Limitation
August Wi-Fi Smart Lock (4th Gen)	Best overall for renters	Retrofit (interior)	Keeps your key	Add-on	Add-on	Built in	None listed	No	Single-cylinder deadbolts only; US/Canada only
SwitchBot Lock Ultra	Flexible retrofit	Retrofit (adhesive/bracket)	Keeps your key	Add-on	Add-on	No (Bluetooth)	Via hub	For remote/Matter	Key features need accessories
Aqara Smart Lock U200	Apple Home Key	Retrofit plus exterior keypad	Keeps your key	Included	Included	No (Thread)	Yes (Thread)	Thread router for Matter	Needs specific cylinder type
Yale Approach	Budget retrofit	Retrofit (interior)	Keeps your key	Add-on	Add-on	Via included bridge	None listed	Bridge included	No Apple Home; US/Canada only
Schlage Encode Plus	Premium replacement	Full replacement	New key	Built in	No	Built in	None listed	No	Needs landlord approval
Yale Assure Lock 2	Customizable	Full replacement	New key (keyed trims)	Built in	Touch model only	Via module	Via module	No	Features split across models

Best Smart Locks for Apartments: Top Picks

1. August Wi-Fi Smart Lock (4th Gen): Best Overall for Renters

August’s product page says the lock attaches to the inside of your existing single-cylinder deadbolt, so you keep your keys. It also says the landlord keeps access with the original keys, and that installation takes under 10 minutes. Manufacturer claims, not our tests.

• Door fit: single-cylinder deadbolts on August’s compatibility list.
• Unlocking: app, Apple Watch, auto-unlock and your key. A keypad or fingerprint reader needs the separate Yale Keypad or Keypad Touch.
• Connectivity: built-in Wi-Fi and Bluetooth. August lists Alexa, Google and Apple Home/Siri, with no hub. It lists no Matter.
• Power and backup: two CR123 batteries. August says up to three months. Your key is the fallback.
• Security: August cites Bluetooth encryption, TLS and mandatory two-factor verification. It publishes no BHMA grade, so security is only as strong as your deadbolt.

Pros: keeps keys and exterior, no bridge, door-open sensor.
Cons: short stated battery life, no keypad in the box, bulky (reviewer-reported).
Buy it if you have a standard deadbolt and want the simplest route. Skip it if your lock is double-cylinder, mortise or rim, or you live outside the US and Canada. August says its locks and app are for use there only.

Check the live price and exact model on Amazon

2. SwitchBot Lock Ultra: Best Flexible Retrofit

SwitchBot’s compatibility page covers single deadbolts. It also covers jimmy-proof and mortise locks, which need the Jimmy Proof edition or an adapter. SwitchBot warns the 3M adhesive may not reach full strength on some surfaces.

• Door fit: SwitchBot asks for at least 33 mm between the lock and the frame on inward-opening doors. Outward-opening doors need more than 40 mm.
• Unlocking: app, NFC, voice, smartwatch and auto-unlock. Fingerprint comes with the Keypad Touch combos.
• Connectivity: Bluetooth. Remote access and Matter go through a SwitchBot hub, sold in a Hub Mini Matter combo.
• Power: triple battery system with a main pack, backup pack and emergency power. SwitchBot states 12 months at 10 uses a day.
• Price on SwitchBot’s site: $139.99 alone, $199.98 with Keypad Touch or with the hub.
• Security: a “6-layer” system with tamper alerts. That is a description, not a BHMA grade.

Pros: widest lock-type coverage here, long stated battery life.
Cons: you pay extra for keypad, fingerprint and remote access.
Buy it if your lock isn’t a plain deadbolt. Skip it if you want one box with everything included.

Check the live price and bundle contents on Amazon

3. Aqara Smart Lock U200: Best for Apple Home Key

Aqara’s U200 FAQ lists compatible locks as EU mortise, US deadbolt and Assa 2000. Cylinders include EU profile, Scandi, UK oval, and Schlage and Kwikset standard. Auto-locking, rim and gate locks are incompatible. The cylinder must let an outside key work while another key sits inside.

• Unlocking: Apple Home Key, fingerprint, password, NFC, app and key. Aqara says Apple Home can’t set temporary passwords.
• Connectivity: Matter over Thread and Bluetooth, no Wi-Fi. Matter users need a Thread border router. Aqara users need the M3 hub for remote control.
• Power: up to six months at eight daily uses. A low-battery alert comes at 20%, with about two weeks of use left.
• Backup: Bluetooth unlock if the keypad dies, your key if the lock dies.

Pros: Home Key plus fingerprint on a retrofit, and one of few options listing UK and EU cylinders.
Cons: the exterior keypad is a visible change, and the cylinder requirement rules out some doors.
Buy it if you use iPhone and Apple Watch and your cylinder is supported. Skip it if you want Wi-Fi without extra hardware.

Check Aqara’s site for your region’s current version and price.

4. Yale Approach: Best Budget Retrofit

The Yale Approach fits over your existing single-cylinder deadbolt. On August’s Approach page it lists at $129.99, including the Yale Connect Wi-Fi bridge. With Keypad Touch for fingerprint it is $239.99.

• Unlocking: app, Apple Watch, auto-unlock and your key. Keypad and fingerprint are add-ons.
• Connectivity: Wi-Fi through the included bridge. It lists Alexa, Google and SmartThings, with no Apple Home.
• Power: 12 months on the lock and seven on the keypad, per the manufacturer.
• Reviewer-reported: Tom’s Guide, as summarized in our front-door guide, notes a noisy motor.

Pros: lowest verified price here, keeps your keys.
Cons: no Apple Home, and it is US/Canada only.
Buy it if you want remote access cheaply. Skip it if you use Apple Home.

Check the live price and bundle contents on Amazon

5. Schlage Encode Plus: Best Premium Replacement

This is a full deadbolt replacement with built-in Wi-Fi, Apple Home Key, Alexa and Google, and up to 100 codes. Retailers list no Matter. It fits doors 1-3/8 to 1-3/4 inches thick, with an adjustable 2-3/8 or 2-3/4 inch backset.

• Power: four AA batteries, typically about six months per retailer listings. A physical key is the backup.
• Security: Schlage states ANSI/BHMA A156.40 Grade AAA, plus A156.36 Commercial Grade 1. Consumer Reports, as summarized in our guide, found it somewhat susceptible to picking.

It suits renters only with written permission. See our list of premium smart locks for home security for how it compares.

Pros: strongest published certification here, no bridge.
Cons: replacement install, no fingerprint, no Matter.
Buy it if your landlord approves and you want top-tier hardware. Skip it if you need to keep your exterior lock.

Check the live price and exact model on Amazon

6. Yale Assure Lock 2: Best Customizable Option

The Assure Lock 2 is a replacement deadbolt sold in touchscreen or keypad, keyed or key-free versions. Fingerprint is on the Touch model and Apple Home Key on the Plus model, not both, as our compatibility guide explains. Bluetooth is built in, and Wi-Fi, Matter and Z-Wave come through modules.

• Fit: retailer specs list roughly 1-3/8 to 2-1/4 inch doors, an adjustable 2-3/8 or 2-3/4 inch backset and a 1 inch edge bore. Yale’s compatibility guide covers measuring. Confirm your trim.
• Security: retailers list BHMA Grade 2. Verify for your model.
• Backup: key-free versions have no cylinder and no key. Check how yours gets emergency power.

Pros: buy only the features you want.
Cons: modules add cost, and model confusion is easy.
Buy it if you have permission and want fingerprint or Home Key. Skip it if you want one simple retrofit.

Check the live price and exact model on Amazon

Retrofit vs. Full Deadbolt Replacement

	Retrofit	Full replacement
Install	Interior mount, no drilling	Remove and swap the deadbolt
Keys	Existing keys keep working	Usually new keys
Exterior	Mostly unchanged	New hardware
Landlord	Still needs a conversation	Needs approval
Security	Only as strong as your deadbolt	Depends on the new lock’s grade
Move-out	Remove and restore	Reinstall the original

Example: a studio in a managed building with master keys suits a retrofit. A rented house where the owner agrees in writing to an upgrade can take a replacement. For more options, see our broader roundup of smart locks for apartments, homes and rental properties.

Can You Install a Smart Lock in a Rental Apartment?

It depends on your lease, your landlord and your local law. Rules vary by country, state and province, so we can’t give a universal answer.

• Lease: read the clause on alterations and lock changes. Some leases ban any change.
• Approval: ask in writing, even for a retrofit. Say it is removable and you will restore the original.
• Keys: keep a working key for your landlord or manager unless your agreement says otherwise.
• Building management: managed buildings may have master-key systems or required vendors.
• Fire and emergency access: keypad-only entry can complicate emergency entry, and fire rules on exits vary. Keep a mechanical key option.
• Move-out: photograph the original hardware and store every part in a labeled bag.

How to Check Apartment Door Compatibility Before Buying

Use the manufacturer’s checker for the exact model, not a general guide. Start with August’s deadbolt list, SwitchBot’s compatibility page, Aqara’s FAQ and Yale’s guide.

• Lock type: August, Yale Approach and the Aqara and SwitchBot standard editions target single-cylinder deadbolts. A single-cylinder deadbolt has a keyhole outside and a thumbturn inside.
• Double-cylinder: these need a key inside too and are a poor fit for thumbturn-based retrofits. They can also be a fire-egress concern.
• Mortise and jimmy-proof: mortise locks sit inside the door edge. Jimmy-proof locks are surface-mounted deadbolts common in older apartments. SwitchBot offers a Jimmy Proof edition and mortise adapter. Aqara lists rim locks as incompatible.
• Door thickness and backset: for replacements, measure thickness and the distance from the door edge to the bore center. Schlage and Yale adjust between 2-3/8 and 2-3/4 inches.
• Thumbturn shape and clearance: unusually shaped or recessed thumbturns can block a mount, and SwitchBot lists frame clearances.

Regional note: North American doors usually use 2-1/8 inch bored deadbolts. UK and EU doors often use Euro or oval cylinders, nightlatches or mortise locks. In the UK, check whether your insurer specifies approved locks, often a British Standard such as BS 3621, before changing hardware. Of our six, only Aqara’s page lists UK oval and EU profile cylinders.

Checklist:

• Lease read and written permission requested
• Lock type identified (single, double, mortise, rim)
• Lock on the manufacturer’s compatibility list
• Door thickness and backset measured
• Thumbturn and frame clearance checked
• Spare key kept for landlord and emergencies
• Wi-Fi or Thread signal tested at the door
• Original hardware photographed and stored

How to Install a Renter-Friendly Smart Lock

Follow your lock’s manual, since steps differ by brand. Tools: a screwdriver, a tape measure and fresh batteries. Aqara includes a hex screwdriver.

1. Photograph the existing door hardware.
2. Confirm compatibility and landlord permission.
3. Remove the interior thumbturn cover or part, as the manual directs, and keep every piece.
4. Attach the mounting plate or adapter, using adhesive only where the manual says to.
5. Fit the lock body over the thumbturn and tighten evenly.
6. Add batteries and pair in the app.
7. Calibrate until it turns the bolt fully.
8. Test with the door open, then closed, then with your key.

To avoid damage, don’t overtighten, avoid adhesive on peeling paint, and test removal heat or adhesive remover on a hidden spot first. Full replacements need permission. See our DIY home security setup guide for sequencing with other devices.

Smart Home Compatibility: Alexa, Google Home, Apple Home and Matter

• Wi-Fi: reaches your router directly. It is simple but uses more battery.
• Bluetooth: short range, good for setup and nearby unlocking.
• Thread: a low-power mesh that needs a border router such as a HomePod mini or Apple TV.
• Matter: a shared standard, usually over Thread on locks, so one lock can join several ecosystems.

Product	Alexa	Google	Apple Home	Connection	Extra hardware
August Wi-Fi	Yes	Yes	Yes	Wi-Fi, Bluetooth	None
SwitchBot Lock Ultra	Via hub	Via hub	Via hub	Bluetooth	Hub for remote and Matter
Aqara U200	Via Matter	Via Matter	Yes, with Home Key	Thread, Bluetooth	Thread router or M3 hub
Yale Approach	Yes	Yes	No	Bridge Wi-Fi	Bridge included
Schlage Encode Plus	Yes	Yes	Yes	Wi-Fi, Bluetooth	None for basics
Yale Assure Lock 2	Via module	Via module	Yes (Bluetooth)	Bluetooth plus module	Module sold separately

For deeper ecosystem detail, see our guide to smart locks compatible with Alexa, Google Home, and Apple HomeKit.

Smart Lock Security and Privacy for Apartment Renters

• Physical security: BHMA publishes separate residential standards. A156.39 covers locksets and latches, such as knobs and levers. A156.40 covers residential deadbolts. Lab tests vary in real doors.
• Retrofit reality: your original deadbolt sets the strength.
• Certifications: only Schlage publishes a clear grade here. August, SwitchBot and Aqara publish none.
• Account security: use a unique password and two-factor authentication. August requires the latter.
• Guest codes: use time-limited codes and delete them after guests leave.
• Firmware: install updates and note that Aqara says its own app updates arrive before Matter ecosystem updates.
• Battery failure: heed low-battery alerts and carry a key.

Common Smart Lock Installation Mistakes

1. Buying before measuring. Check the manufacturer’s list first.
2. Assuming a retrofit fits every lock. Single-cylinder only is common.
3. Skipping landlord approval. Ask in writing.
4. Overtightening. It causes binding and motor strain.
5. Weak Wi-Fi at the door. Test signal first.
6. Forgetting accessories. Keypads and hubs add cost.
7. Not testing the key. Test it with the door open and closed.
8. Losing original parts. Label and store them.

Are Smart Locks Worth It for Apartment Renters?

For many renters, yes. You get guest codes, access logs and keyless entry without changing the door. Limits: you still carry a key, batteries need attention, and a retrofit adds no security. Ownership costs add up. These are manufacturer prices seen November 8, 2026, and they change often. August’s site showed an early Black Friday sale.

Setup	Verified manufacturer price
August Wi-Fi lock	$199.99
August plus Keypad Touch	$199.99 + $119.99 = $319.98
Yale Approach (with bridge)	$129.99
Yale Approach plus Keypad Touch	$239.99
SwitchBot Lock Ultra	$139.99
SwitchBot with Keypad Touch or hub	$199.98
Schlage, Yale Assure 2, Aqara U200	Verify live prices

Also budget for batteries. August says up to three months per CR123 pair. See our guide to essential home security gadgets for where else to spend.

Frequently Asked Questions

1. What is the best smart lock for apartment renters?
Our editorial pick is the August Wi-Fi Smart Lock, if you have a compatible single-cylinder deadbolt. See the verdict for other cases.

2. Can I install a smart lock without landlord permission?
Not safely assume so. Check your lease and local law, and ask in writing. A retrofit is easier to justify than a replacement.

3. Which smart locks do not require drilling?
August, SwitchBot Lock Ultra, Aqara U200 and Yale Approach are retrofits. Some include adhesive parts.

4. Can I keep my existing apartment keys?
Yes with the four retrofits. Schlage and Yale Assure 2 replace the lock and use new keys.

5. Do smart locks work with apartment deadbolts?
Many do, if single-cylinder and on the compatibility list. Check the maker’s checker.

6. Are smart locks compatible with mortise locks?
Only some. SwitchBot lists mortise with an adapter and Aqara lists EU mortise. Confirm first.

7. Do apartment smart locks work without Wi-Fi?
Local methods like Bluetooth, keypad and key usually work. Remote and voice control need a connection.

8. What happens if the smart lock battery dies?
Use your key or an emergency method, depending on the model. Key-free Yale models have no key.

9. Can landlords still access apartments with their keys?
With retrofits that keep the cylinder, usually yes. August says so on its site. Your lease may also give access rights.

10. Are retrofit smart locks secure?
They add convenience but not strength. Security depends on your original deadbolt.

11. Can I remove a smart lock when moving out?
Retrofits are designed to be removable. Keep your original parts and test adhesive removal carefully.

12. Do smart locks require monthly subscriptions?
We found no mandatory fee for core lock and unlock on these six. Confirm for your model and any camera add-ons.

Final Verdict

There is no single best choice, so match the lock to your door:

• Most renters with a standard deadbolt: August Wi-Fi Smart Lock.
• Unusual, mortise or jimmy-proof locks: SwitchBot Lock Ultra.
• Apple Home Key: Aqara U200, if your cylinder qualifies.
• Tightest budget: Yale Approach.
• Permission to replace, plus top certification: Schlage Encode Plus.
• Permission to replace, plus choice of features: Yale Assure Lock 2.

Whichever you choose, measure first, ask your landlord in writing and keep a spare key. The best smart locks for apartments are the ones that fit your door and your lease. Check live prices and exact model compatibility before you buy.