Replacing an old, unsupported or DIY smart home system
You rarely need to rip everything out. Most systems can be assessed, kept where sound and rebuilt around a reliable, documented platform.
You rarely need to rip everything out. Most systems can be assessed, kept where sound and rebuilt around a reliable, documented platform.
Common situations
- The original installer has stopped trading or stopped responding. Proprietary systems that only a licensed dealer can program can leave owners stuck.
- The system is old. Apps stop working, cloud services are switched off or hardware is no longer supported.
- A DIY setup has grown out of control. Many apps, many hubs, automations no one remembers writing and a family that has stopped trusting it.
- You have moved into a home with a system you cannot access. See our guide to moving into a smart home.
How we approach it
- Audit. We list every device, hub, controller and cloud account, check the network and find out what actually works.
- Decide what to keep. Wired lighting circuits, keypads, sensors and good quality hardware can often stay. Much of it can be integrated into Home Assistant, which supports over 1,000 brands (Home Assistant).
- Fix the foundations. Usually the network first. Unreliable smart homes are very often unreliable Wi-Fi.
- Rebuild cleanly. One platform, one app, sensible automations and documentation so the system can be supported by anyone competent.
A real example
In a six-bedroom home with an annex near Edinburgh, the owners had a DIY Home Assistant system that had become unreliable. We rebuilt it into a stable, documented system covering security and climate control. The project value was £30,000 ex. VAT.
Proprietary systems
Some platforms, such as Control4, are programmed only by authorised dealers, and remote access may involve a subscription (our Control4 comparison explains more). Owners in this position can look for another dealer or move to an open platform. Which is right depends on how much of the existing hardware is worth keeping.
Questions to answer before you start
- Do you have admin access to every account and device?
- Which parts does the household actually use and value?
- Is the hardware still supported with security updates? UK law now requires manufacturers of connectable consumer products to publish minimum security update periods (GOV.UK).
Common questions
Will I have to replace all my switches and keypads?
Often not. Wired keypads and lighting modules can frequently be integrated. We confirm what can stay during the audit.
My installer has disappeared and I do not have the passwords. Can you help?
Often yes, though some proprietary systems need dealer access to recover. We will tell you honestly what is recoverable.
Is it cheaper to fix or replace?
It depends on the age and quality of the hardware. Reusing sound equipment is usually the most cost-effective route.
Related services
Sources
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.