Consumer Unit Upgrade in Horsham

NICEIC-Approved Fuse Box Replacement & Consumer Unit Upgrades for Horsham Homes

NICEIC-approved electricians upgrading fuse boards and consumer units across Horsham's homes and period properties. Safe, compliant, and built to the latest 18th Edition standards.

McMillan Electrical NICEIC-approved electrician in Horsham — consumer unit upgrade and fuse box replacement specialists

McMillan Electrical has been upgrading consumer units and replacing fuse boards across Horsham for nearly two decades. Whether you're in a Victorian terrace near the Causeway, a family home in Holbrook or Roffey, or a newer property on Highwood Village or North Horsham — our NICEIC-approved team ensures your electrical installation meets current 18th Edition standards.

Horsham's housing stock spans well over a century of building regulations — from period properties with original rewireable fuse boxes to modern estates that may simply be due an upgrade. We assess your installation honestly, and only recommend work that's genuinely needed.

Consumer Unit Upgrades for Horsham Homes and Businesses

A consumer unit upgrade replaces your existing fuse box with a new, fully 18th Edition compliant board — typically fitted with individual RCBO protection on every circuit and a Type 2 Surge Protection Device. The result is a safer, smarter installation that protects your circuits independently — so if one trips, the rest of your home stays live.

Most upgrades are completed in a single day. We isolate your supply, fit the new board, test every circuit, and issue your Electrical Installation Certificate before we leave — your legal proof of compliance under Part P of the Building Regulations. As your local NICEIC electrician in Horsham, we handle every step of the process, from the initial assessment through to certification.

Old outdated fuse board in a Horsham period property — a common sign that a consumer unit upgrade is needed
Residential street in Horsham West Sussex — McMillan Electrical carry out consumer unit upgrades across Horsham's homes and period properties

Why Horsham Homes Need Consumer Unit Upgrades

Horsham's mix of housing makes consumer unit upgrades a particularly common job in this area. The town centre and the Causeway have a concentration of Victorian and Edwardian properties, many still running on original rewireable fuse boards. Out toward Roffey, Holbrook, and Littlehaven, we regularly find boards that no longer meet modern 18th Edition standards — and even newer developments like Highwood Village often need an SPD added under Amendment 2.

We also work regularly in the villages around Horsham — Warnham, Rusper, Slinfold, Southwater, and Broadbridge Heath — where rural properties often combine period wiring with more recent extensions. Planning an extension, loft conversion, or EV charger? It's worth having your consumer unit checked as part of that process, not as an afterthought.

Consumer Unit Replacement Cost in Horsham

Consumer unit upgrades in Horsham start from £700 + VAT (£840 inc VAT) for a standard domestic property, rising from £1,000 + VAT (£1,200 inc VAT) for larger or more complex installations. Every upgrade is the same full specification — an 18th Edition compliant board with individual RCBO protection on every circuit, a Type 2 Surge Protection Device, and a full EICR on your installation, so you get a written assessment of the whole property alongside the new board.

We always provide a written, fixed-price quote after a free site visit, so the consumer unit replacement cost you're given upfront is exactly what you'll pay. For a full breakdown of pricing across all job types, see our consumer unit upgrade cost guide.

New 18th Edition consumer unit with RCBO protection and SPD installed in a Horsham home by McMillan Electrical
Smiling electrician in Horsham wearing a uniform and safety gloves, completing an electrical inspection checklist — McMillan Electrical.

Why Choose McMillan Electrical in Horsham

  • NICEIC Approved Contractor since 2006

  • Part P registered — full certification issued on completion

  • 18th Edition BS 7671 compliant on every installation

  • Fully insured with public liability cover

  • 5-star rated across 88+ verified reviews

We've carried out consumer unit upgrades in period cottages near Horsham Park, family homes across Roffey and Holbrook, and new-build properties on Highwood Village — so whatever your property type, we've likely worked on something similar nearby. That local experience means we know what to expect from Horsham's housing stock before we even arrive on site.

As a long-established NICEIC electrician in Horsham, we've upgraded consumer units in period cottages, modern estates, and everything in between. We'll always tell you honestly whether your board needs replacing — and if it does, we'll explain exactly why.

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Consumer Unit Upgrade FAQs — Horsham

Everything you need to know about consumer unit upgrades across Horsham and the surrounding areas.

Do you cover villages around Horsham like Warnham and Rusper?

Yes. As well as Horsham town itself, we regularly carry out consumer unit upgrades in the surrounding villages including Warnham, Rusper, Slinfold, Southwater, and Broadbridge Heath.

I'm in a period property near the Causeway — can my old fuse box be upgraded?

Yes, and it's one of the most common jobs we do in that part of Horsham. Period properties often still have the original rewireable fuse board. We can usually upgrade to a fully compliant 18th Edition consumer unit without any disruption to the character of the property.

How quickly can you get to a property in Horsham?

We're typically able to offer a free site assessment and quote within the same week, with most consumer unit upgrades booked in shortly after.

Can you upgrade a consumer unit in a listed or period property in Horsham?

Yes. We regularly work on period properties around the Causeway and the older parts of Horsham town centre, including listed buildings. Consumer unit upgrades don't affect the external character of a property, and where a building is listed we're happy to liaise with you on any specific requirements before work begins.

5-Star Rated Electricians in Horsham — Trusted by Businesses and Homes

Consumer Unit Upgrades Across Horsham's Neighbourhoods

The Causeway & Town Centre

Home to some of Horsham's oldest and most characterful properties, many still running on original rewireable fuse boards. We regularly upgrade consumer units here without disrupting the period character of these homes.

Roffey, Holbrook & Littlehaven

Established residential areas with a mix of older housing stock and more recent extensions. A common combination we find here is period wiring paired with newer additions — exactly the kind of installation that benefits from a full board assessment.

Highwood Village & North Horsham

Horsham's newer developments are generally well specified, but even recently built consumer units often need a Surge Protection Device added to meet 18th Edition Amendment 2 — something we check on every visit.

Surrounding Villages

From Warnham and Rusper to Slinfold, Southwater, and Broadbridge Heath, we carry consumer unit upgrades out across the wider Horsham district, not just the town itself.

We're proud to help keep Horsham's homes — old and new — safe, compliant, and properly protected.

Book Your Consumer Unit Upgrade in Horsham

Get a free, no-obligation site assessment and a fixed-price quote. We're typically available within the same week for properties across Horsham and the surrounding villages.

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