SJI Electrical provides professional consumer unit and fuse board upgrades — based in Paisley, around six miles away, and covering Houston, neighbouring Crosslee and the wider Gryffe Valley.
The consumer unit is the central control point of your property's electrical system. An outdated board is one of the most common reasons Houston homeowners get in touch.
Three quick questions, then it goes straight to SJI on WhatsApp.
In Houston the consumer unit question comes up at both ends of the village. In the 1780s cottage core along North Street and South Street, an older-style board is exactly what you would expect to find in stock of that age, and it has usually seen several generations of electrical work before you. Out in the newer suburban expansion, including Craigends, the trigger tends to be different — an extension underway, additional circuits needed, a property being prepared for rental, or a board that has simply fallen behind current standards. Wherever your property sits, if you're not sure whether your board needs upgrading, we're happy to take a look and give you an honest answer either way.
Every upgrade follows the same structured process, from isolation through to certification.

The existing supply is safely isolated and the current circuits inspected before any work begins.

The existing fuse board is removed once the inspection and plan are agreed with you.

A modern consumer unit is installed, improving circuit protection, capacity and organisation.
Also part of a full rewire →
Full system testing is carried out and certification issued once the upgrade is complete.
Most fuse board upgrade installations are completed within one day, depending on the property. In a village where a 1780s cottage and a recently built Craigends home can be a few minutes apart, that "depending on the property" does real work — older stock that has been altered over the years is not always a straight swap. We inspect first and confirm timing when we quote, so you know what to expect on the day.
We ensure you understand every stage before work begins.
Send us the details of your Houston property and what's prompting the upgrade.
Inspection of the existing installation, with findings explained clearly.
A written quotation provided before anything is agreed.
An installation date agreed that works for you.
Professional installation, followed by testing and certification.
Based in Paisley and providing fuse board upgrades across Renfrewshire and the wider Greater Glasgow area:
Most installations are completed within one day, depending on the property. We'll confirm timing when we quote.
It can be. The cottage stock along North Street and South Street dates mainly to the 1780s and has often been altered over the years, so we inspect the existing circuits before quoting rather than assuming the board is a straight swap.
Possibly. Newer properties usually have modern boards, but upgrades still come up when circuits are added, an extension is built, or a property is being prepared for rental. An inspection will tell you either way.
The supply is safely isolated before any work begins, as it is for every upgrade. Full system testing is carried out before we hand the property back to you.
Yes. Every fuse board upgrade includes full system testing, and certification is issued once the work is complete.
Yes. Crosslee shares the civil parish of Houston and Killellan with Houston, sits immediately alongside it, and is covered on the same visits.
If your Houston property still has an older-style fuse board, or you're preparing for renovation or a new tenancy, contact SJI Electrical to arrange an inspection. We'll look at the existing installation, explain what we find in plain terms, and give you a written quote before anything is agreed.