Buying or selling a home with smart technology: what to check
Smart systems come with accounts and access. Buyers should make sure they get full control, and sellers should make sure they hand it over and remove their own access.
Smart systems come with accounts and access. Buyers should make sure they get full control, and sellers should make sure they hand it over and remove their own access.
Why this matters
A smart home is not just hardware. Cameras, locks, alarms and heating are often tied to apps and cloud accounts in the previous owner's name. If access is not handed over properly, the new owner can be locked out, and in the worst case the previous owner can still see cameras or unlock doors.
For sellers
- List what stays. Agree in the fixtures and fittings list which smart devices are included, such as keypads, cameras, thermostats and speakers.
- Gather the documentation. Device list, installer details, wiring notes and any warranties.
- Transfer or remove accounts. Remove your personal accounts, shared users and payment details. Transfer ownership where the platform allows it.
- Delete personal data. Recorded camera footage, voice assistant history and any saved family profiles.
- Leave admin credentials securely for the buyer on completion.
For buyers
- Ask before exchange what the system includes, who installed it and whether documentation exists.
- On completion, change every password and code: Wi-Fi, alarm codes, smart lock codes, app accounts and the router admin login.
- Check shared access. Remove any users, keys, fobs and linked phones you do not recognise.
- Reset where you cannot get control. A device you cannot fully take over should be factory reset and set up again in your name.
- Check the network. The router may have belonged to the seller's broadband provider and left with them.
Cameras and privacy
If the cameras film beyond the property boundary, the new owner takes on the data protection responsibilities that come with that. Our CCTV and video doorbell guide explains the rules.
Does a smart home add value?
We are not aware of reliable UK data showing a consistent uplift in sale price, so we do not claim one. What buyers do value is a system that is documented, easy to use and not dependent on one person or a lapsed subscription. A messy, undocumented system can put buyers off.
How we help
We can audit a system you have inherited, recover or reset access, and hand you a clean, documented setup. For older or proprietary systems, see our guide to replacing an old system.
Common questions
The seller has left and I cannot access the system. What now?
Most devices can be reset and set up again in your name. Some proprietary systems need a dealer to transfer them. An audit will tell you which.
Should smart devices be listed on the fixtures and fittings form?
Yes. Listing them avoids disputes about whether keypads, cameras or speakers stay with the house.
Related services
Last reviewed 1 November 2026. Prices ex. VAT unless stated.
More guides
How much does a smart home cost in the UK?
Real figures from our own projects, what pushes the price up or down, and what you should budget for after installation.
Smart home technology in listed buildings and period properties
Older homes need a more careful approach. Here is how we add modern control while protecting the fabric and character of the building.
When should you plan a smart home in a new build or renovation?
Before first fix. Cabling decisions are cheap while walls are open and expensive afterwards, so the design should be settled before the electrician starts.
Ready to start your journey?
Tell us about your home and we will reply within one working day to arrange a free 15-minute discovery call.