Fuseboard Upgrades South London
NAPIT-certified fuseboard upgrades across South London. Consumer unit replacements from £400. Full RCD/RCBO protection, same-day certification.
Get a Free QuoteExpert Fuseboard Upgrades Across South London
A modern consumer unit is the heart of your home's electrical safety. At Top Volt, we specialise in replacing outdated fuse boxes with fully compliant, RCD-protected consumer units that meet the latest BS 7671 18th Edition wiring regulations. Our NAPIT-accredited electricians carry out every fuseboard upgrade to the highest standard, with full certification issued the same day.
Whether your current board uses old rewirable fuses, lacks RCD protection, or has been flagged on an EICR report, we provide a complete solution — from survey and quotation through to installation and sign-off. We cover all of South London including Croydon, Sutton, Bromley, Clapham, Balham, Wimbledon, and surrounding areas.
All fuseboard upgrades are notifiable under Part P of the Building Regulations. As a NAPIT-registered contractor, we self-certify and notify the local authority on your behalf, so you receive a fully compliant installation without any additional paperwork.
Why Upgrade Your Fuseboard?
RCD Protection
Modern consumer units include RCDs (Residual Current Devices) that detect dangerous current leakage and cut power within milliseconds — dramatically reducing the risk of electric shock and electrical fires. Older fuse boards offer no such protection.
Insurance & Mortgages
Many insurers and mortgage lenders now require a modern, RCD-protected consumer unit as a condition of cover or lending. An outdated fuse box can delay a property sale or result in higher insurance premiums. Upgrading resolves this immediately.
New Circuits & EV Chargers
Adding a new circuit — such as an EV charger, electric shower, or garden power supply — often requires a larger or more modern consumer unit. We assess your current board and upgrade where necessary as part of any new installation.
Transparent Fuseboard Upgrade Pricing
Fixed prices with no hidden fees. All work includes NAPIT certification and local authority notification.
| Board Type | Price |
|---|---|
| 1-bed flat (6-way board) | From £400 |
| 2–3 bed house (10-way board) | From £500 |
| 4–5 bed house (16-way board) | From £650 |
| Commercial / large board | POA |
*Final price confirmed after survey. Additional costs may apply for remedial wiring work identified during installation.
What's Included in Our Fuseboard Upgrade
- Full survey: Assessment of your existing installation and circuit requirements before any work begins.
- Consumer unit supply & fit: Hager, Wylex, or equivalent metal-clad consumer unit with full RCD/RCBO protection.
- Circuit labelling: All circuits clearly labelled for easy identification.
- Testing & inspection: Full dead and live testing of all circuits in accordance with BS 7671.
- NAPIT certification: BS 7671 compliance certificate issued the same day.
- Building Regulations notification: We notify the local authority on your behalf — no extra cost.
Frequently Asked Questions
What is a fuseboard upgrade?
A fuseboard upgrade (also called a consumer unit replacement) replaces your old fuse box with a modern consumer unit fitted with RCDs (Residual Current Devices) and RCBOs. Modern boards provide far superior protection against electric shocks and electrical fires compared to older rewirable or cartridge fuse boards.
Do I need a fuseboard upgrade?
You may need a fuseboard upgrade if your current board is over 25 years old, uses old-style rewirable fuses, lacks RCD protection, trips frequently, or has been flagged as requiring upgrade on an EICR report. It is also required when adding significant new circuits such as an EV charger or electric shower.
How long does a fuseboard upgrade take?
A standard domestic fuseboard upgrade typically takes 4–8 hours. The power will need to be off for the duration of the work. We aim to complete all work in a single visit and issue the NAPIT certificate the same day.
Is a fuseboard upgrade notifiable work?
Yes — a consumer unit replacement is notifiable work under Part P of the Building Regulations. As a NAPIT-accredited contractor, Top Volt self-certifies all fuseboard upgrades and notifies the local authority on your behalf. You receive a BS 7671 compliance certificate.
How much does a fuseboard upgrade cost?
Our fuseboard upgrades start from £400 for a standard 1-bed flat. The exact price depends on the size of the board, number of circuits, and any additional work required. We provide a fixed written quote before starting any work — no hidden fees.
What areas do you cover for fuseboard upgrades?
Top Volt provides fuseboard upgrades across all of South London, including Croydon, Sutton, Bromley, Clapham, Balham, Tooting, Wimbledon, Streatham, and surrounding areas. Contact us to check availability in your area.
Get a Fuseboard Upgrade Quote Today
Ready to upgrade your fuseboard or have questions? Fill out the form below and we'll get back to you promptly with a fixed price.
What Our Clients Say
Mark T.
"Top Volt upgraded our old fuse box to a modern consumer unit. The electrician was professional, tidy, and explained everything clearly. The work was completed in one day and the certificate arrived the same afternoon. Excellent service."
Source: Checkatrade
Lisa K.
"Our EICR flagged the fuseboard as needing replacement. Top Volt provided a competitive quote and carried out the work within a week. Very happy with the quality of the installation and the professionalism of the team."
Source: Checkatrade