Most smart lock returns are not about the lock — they are about the door. Warped frame, misaligned strike, off-spec bore, doorbell wire needing a new transformer — those turn a 15-minute swap into a half-day. This guide answers the only two questions that matter before you spend $250: will it fit your door, and do you install it or hire someone.
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Need a Smart Lock Installed? Start Here
Walk this decision flow before you buy — it tells you whether the install is DIY, handyman, locksmith, or electrician.
- Standard deadbolt, door closes clean? 1⅜”–1¾” thickness, 2⅜”/2¾” backset, 2⅛” bore. Retrofit lock = 15-min DIY.
- Door drags or sticks? Frame shifted or strike plate is off. The lock motor will not muscle through misalignment — it strains and chews batteries. Handyman, $75–$150.
- Mortise lock, non-standard bore, no existing deadbolt? Drilling or hardware swap. Locksmith, $150–$300.
- Wired video lock (Lockly Vision, hardwired Nest)? Doorbell transformer or 120V/GFCI tie-in. Electrician, $150–$400.
- Matter hub, Z-Wave bridge, whole-home automation? Handyman or smart-home specialist, usually bundled.
Door Compatibility Checklist (Before You Buy)
Five minutes with a tape measure here saves a return shipment.
- Thickness: 1⅜”–1¾” fits most locks. Thicker doors need a specific SKU or shim kit.
- Backset: 2⅜” or 2¾” — most locks are adjustable, verify yours.
- Bore: Standard is 2⅛”. Older doors with 1½” or non-round bores need drilling — handyman or locksmith.
- Strike alignment: Close the door slowly. If the latch scrapes the strike, the door dropped or the frame shifted. Fix the alignment first.
- Warped door: If it binds against the jamb in humid months, plane the slab or shim the hinges first. Handyman, under $150.
- Weatherstripping: Compressed weatherstripping can throw bolt alignment off by ⅛” — enough to stall an auto-lock motor.
For the broader connected-home stack, see the smart home installation guide.
DIY vs. Hiring a Pro: Real Cost Ranges
Retrofit locks over an existing deadbolt install in 10–15 minutes with a screwdriver. Full-replacement deadbolts take 20–40 minutes if the door is square. Anything beyond that is a hire.
| Install scenario | Who | Cost |
|---|---|---|
| Retrofit over existing deadbolt, clean door | DIY | $0 labor |
| Full deadbolt swap, strike adjust, minor planing | Handyman | $75–$150 |
| New bore, mortise replacement, rekey | Locksmith | $150–$300 |
| Hardwired video lock + transformer/GFCI tie-in | Electrician | $150–$400 |
Not sure which trade? Post it as handyman work — bidding pros tell you up front whether strike work is enough or wiring needs an electrician sub. Context: handyman hourly rates; task list: handyman services.
Handyman vs. Locksmith vs. Electrician
| The issue | Best trade |
|---|---|
| Strike off, door drags, sagging hinges | Handyman |
| New bore drilled, mortise-to-deadbolt conversion | Locksmith |
| Rekey all entry locks to a single backup key | Locksmith |
| Doorbell transformer upgrade for wired video lock | Electrician |
| GFCI outlet for hub or PoE doorbell | Electrician |
| Matter / Z-Wave / HomeKit integration | Handyman / smart-home specialist |
Picking the Lock: Four Specs That Matter
- ANSI/BHMA grading: Grade 2 minimum for front doors, Grade 1 for commercial-level resistance. Skip Grade 3 outside.
- Encryption: AES-128 minimum (bank-grade) protects against signal-replay attacks.
- Access redundancy: At least two backups beyond the primary — keypad + physical key, or app + keypad.
- Ecosystem: Apple HomeKit options are narrower than Alexa or Google Home. Matter is meant to fix this; adoption is still early.
Short-list (one table, not five reviews)
| Model | Price | Best for | Install |
|---|---|---|---|
| August Wi-Fi | $220–$240 | Retrofit, keep existing exterior + key | DIY (10 min) |
| Schlage Encode Plus | $280–$320 | ANSI Grade 1, Apple HomeKey | DIY/handyman |
| Yale Assure Lock 2 | $240–$280 | Modular keypad/touch/fingerprint | DIY/handyman |
| Eufy Touch & Wi-Fi | $180–$220 | Budget biometric | DIY (15 min) |
| Lockly Vision Elite | $330–$370 | Integrated video doorbell | Electrician likely |
Imperfect door? Get a handyman to fit it, not fight it.
Strike-plate alignment, planing a swelled door, rekeying — that is what a handyman does in an hour. Post the job on AllBetter, ID-verified bids in minutes, Escrow Shield holds payment until you approve the work.
Smart lock install bids, side by side
Post the job once and identity-verified pros send real bids — compare prices side by side, and your payment sits in escrow until you approve the finished work.
What Smart Locks Cannot Do
- Fix a bad door. Replaces the bolt, not the slab, frame, or strike. Hollow-core doors and short strike-plate screws into soft pine still fail.
- Survive without batteries. AA or CR123A, 6–12 months typical. Keep a backup key or pick a model with external emergency power.
- Work fully without Wi-Fi. Remote unlock and notifications need internet; keypad and Bluetooth keep working.
- Replace a full security setup. A reinforced strike plate with 3″ screws into the framing stud does more for entry resistance than upgrading the lock alone.
Frequently Asked Questions
Do I need a handyman, locksmith, or electrician to install a smart lock?
Most retrofit locks are DIY in 10–15 minutes if your door closes cleanly. Handyman ($75–$150) handles strike adjust, planing, full deadbolt swaps. Locksmith ($150–$300) handles new bore holes, mortise conversions, rekeying. Electrician ($150–$400) only when a hardwired video lock needs a new doorbell transformer or GFCI tie-in.
How do I know if my door is compatible with a smart lock?
Measure three things: door thickness 1⅜–1¾”, backset 2⅜” or 2¾”, bore 2⅛”. Then close the door slowly and watch the latch enter the strike. If it scrapes or you have to lift the door, alignment needs a handyman before any smart lock works reliably.
What if my door is warped or the strike plate is misaligned?
The motor strains every cycle, chewing batteries in weeks. The fix is mechanical, not electronic. A handyman planes the edge, shims the hinges, or repositions the strike so the bolt drops cleanly. Under $150, about an hour.
Are smart locks more secure than traditional deadbolts?
ANSI/BHMA Grade 1 or 2 smart locks match or exceed traditional deadbolts on physical security. They add access logging, tamper alerts, auto-locking, instant code revocation. AES-128 encryption blocks digital attacks. Main vulnerability: battery dependency — a backup key addresses it.
What happens if the smart lock battery dies while I am away?
Most smart locks warn weeks before batteries die. Many include an external emergency power port for a 9V battery or USB-C cable. If your model has a physical keyhole, a backup key also works. Replace batteries as soon as the first alert appears.
Do smart locks work during a power outage or internet failure?
Yes — smart locks run on internal batteries, not household electricity. Wi-Fi features like remote locking and notifications stop during internet outages, but Bluetooth access and keypad codes keep working.
Are smart locks safe from hacking?
AES-128 encryption or higher is secure against common wireless attacks. Real-world hacking is rare and targets budget models with weak encryption. Keeping firmware updated and using strong unique PIN codes minimizes risk.
