Smart locks promise convenience and security. What the marketing doesn't mention: the total cost often ends up far higher than the sticker price.
The Hidden Costs
1. Hub/Bridge (Often Sold Separately)
Many smart locks only work via Bluetooth by default. To get remote access, you need a Wi-Fi hub. Cost: £30-£80 extra
2. Professional Installation
Smart locks require removing your existing deadbolt. Many opt for professional installation. Cost: £50-£150
3. Battery Replacement
Smart locks eat batteries—replacement every 3-6 months. Cost: £15-£30 per year
4. Subscription Fees
Some brands charge for premium features. Cost: £0-£100 per year
5. Replacement Cycle
Smart locks have tech lifecycles of 5-7 years vs 15-20+ for traditional locks.
True Cost of Smart Lock Ownership (5 Years)
| Smart lock (mid-range) | £200 |
| Hub/bridge | £50 |
| Professional installation | £75 |
| Batteries (5 years) | £100 |
| Subscription (if applicable) | £0-£300 |
| 5-Year Total | £425-£725 |
The Non-Financial Costs
Security Trade-Offs
Any internet-connected device is potentially hackable. If someone compromises your account, they might unlock your door.
Reliability Concerns
Motor failures, connectivity issues, app crashes, dead batteries—more components mean more failure points.
Dependency on Third Parties
You're trusting the company stays in business and continues supporting your model.
The question to ask: Do you need to control your lock remotely, or just know it's locked? A lock monitor gives you visibility without the complexity.
When Smart Locks Are Worth It
- Airbnb/rental properties: Guest access codes are invaluable
- Frequent visitors: Carers, cleaners with their own codes
- Keyless lifestyle: Never carrying keys
All the Peace of Mind. None of the Hassle.
Locksure shows you whether your door is locked—under £70, hub included. No installation cost. No subscription.
See How It Works →