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Self check-in for UK holiday lets and B&Bs: key safes, smart locks and an arrival flow that works at midnight
Dmitrij Sitki · lead engineer at ReceptionGO
Published 18 October 2026 · 6 min read
Self check-in lets guests arrive at any hour without you being there. It works when three things happen before arrival: the guest completes an online check-in (details, ID, house rules, balance), gets clear directions, and receives a door code that works only for their stay. A smart lock with per-booking codes beats a key safe for security, insurance and late changes.
A guest who lands at Gatwick at 10pm, picks up a hire car and reaches a Cotswold cottage at half past midnight does not want to phone you. You do not want to be phoned. Self check-in is how most UK holiday lets, and a growing number of B&Bs and guest houses, solve that. Done well, it is calmer than a meet-and-greet. Done badly, it is a guest in the rain with a code that does not work.
Three ways in: key safe, keypad, smart lock
| Key safe | Keypad lock (offline) | Smart lock with gateway | |
|---|---|---|---|
| Cost | £40–£120 | £100–£250 | £150–£400 + gateway |
| Code per booking | No — you change it by hand | Sometimes, set at the door | Yes, created remotely |
| Expires at checkout | No | Depends on model | Yes |
| Who opened when | Unknown | Limited | Full log per code |
| Insurance | Police-preferred models only | Usually fine | Usually fine |
| Weak point | Shared codes, lost keys | Programming at the door | Batteries and the gateway’s internet |
For a single cottage with few bookings, a good key safe is acceptable. Once you have several units, frequent turnovers or cleaners coming and going, per-booking codes pay for themselves in saved trips and changed locks. Our longer guide on smart locks for hotels and holiday lets covers models and installation.
The arrival flow, step by step
- Booking confirmed. A short welcome: thanks, what happens next, and that the check-in link will follow.
- Three to seven days before arrival: online check-in. Each guest aged 16+ enters their details or scans an ID. That covers the guest register the law requires. They confirm arrival time, accept the house rules and pay the balance, deposit or visitor levy by card.
- Check-in complete: the code. The door code, parking, Wi-Fi, bins and the house manual. Fire information belongs here too — see the fire safety checklist.
- Arrival day, morning. A short reminder with the code and a phone number for emergencies.
- Checkout morning. Times and the three things you actually want done — bins, dishwasher, keys back if any.
- The day after. A thank-you and a review request.
The rule that makes it work: no code until check-in is complete. That one condition turns the online form from optional into something everyone finishes.
Two message templates
Hello [name], we’re looking forward to having you at [property] today. Check-in is from 4pm. Your door code is [code] — press the button after the last digit. There’s parking for one car in front of the house; please don’t use the neighbours’ drive. Wi-Fi: [network] / [password]. If anything isn’t right, ring or text [number] — day or night. Have a lovely stay!
Morning [name] — just a reminder that checkout is at 10am. Please leave the bins by the gate, run the dishwasher and lock the door behind you; the code stops working at 10. Safe travels, and thank you for looking after the place.
House rules, deposits and damage
- Make the rules part of check-in, not a PDF nobody opens: maximum guests, no parties, quiet hours, pets, smoking. An accepted rule is much easier to enforce.
- Deposits: Airbnb does not let you take one separately, so a damage claim goes through AirCover. For direct bookings, a card stored for damages or a refundable deposit is common — say so clearly at booking.
- Price transparency: since April 2025 UK law bans drip pricing. Cleaning fees and other mandatory charges must be in the price you advertise, not added at the last step.
- Noise: a decibel-only monitor, disclosed in the listing, is the accepted way to spot a party early without recording anyone.
When the technology fails
Every system fails eventually; good self check-in plans for it:
- Backup key in a police-preferred key safe with a separate code, never shared in advance.
- Gateway alerts: know before the guest does if the lock is offline or the batteries are low.
- A local contact who can be there within an hour — a cleaner, a neighbour, a caretaker.
- Phone signal: rural cottages often have none at the door. Send the code and directions in advance, not on arrival.
B&Bs and guest houses
Self check-in is not only for holiday lets. A guest house with six rooms can use per-room codes plus a main door code for the same party, keep breakfast and hospitality in person, and stop waiting up for the last arrival. Group bookings with several rooms can share one code that opens the front door and each of their rooms. For the costs side of the decision, see what reception really costs a small hotel.
Frequently asked questions
Is a key safe secure enough for a holiday let?
It can be, if it is a police-preferred model (tested to LPS 1175 or Sold Secure) and fixed into masonry. The weakness is the code: most hosts change it rarely, so past guests and cleaners know it. Some insurers will not pay for theft without forced entry when a key safe code was shared. Per-booking codes on a smart lock remove that problem.
Which smart lock works best for holiday lets?
One that supports time-limited codes created remotely, works without Wi-Fi at the door (codes stored in the lock) and has a gateway so you can manage it from anywhere. TTLock-based locks are common and affordable. Fit a lock that suits UK doors — euro cylinder versions are the easiest retrofit.
What if the guest’s code does not work?
Have a fallback: a key in a police-preferred key safe with a separate code you can give out by phone, and a contact who can be there within an hour. Check that codes reached the lock before every arrival — many systems alert you if the gateway goes offline.
Do I have to check guests’ ID?
You must record the name and nationality of every guest aged 16+, and passport details for most overseas guests, under the Immigration (Hotel Records) Order 1972. Online check-in is the simplest way to do that without meeting guests.
Can I use a doorbell camera or noise sensor?
A camera covering the entrance, with notice to guests, and a decibel-only noise monitor are generally acceptable and allowed by Airbnb if disclosed. Cameras inside the accommodation are not. Tell guests about any device in the listing and in the arrival information.
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- Secured by Design — Police-preferred key safes (LPS 1175 / Sold Secure)
- Immigration (Hotel Records) Order 1972 — guest records
- Digital Markets, Competition and Consumers Act 2024, Schedule 20 — drip pricing
- Airbnb — Rules about security cameras and other devices
- ICO — Video surveillance (including CCTV)
Rules last checked on 15 October 2026.