Consumer Unit Replacement Glasgow: Cost, What’s Included & What to Expect (2026)
Your consumer unit — also called a fuse board or fuse box — is the nerve centre of your home’s electrical installation. When it fails, trips constantly, or no longer meets current safety standards, replacing it is not optional. This guide covers everything Glasgow homeowners need to know: what a consumer unit replacement costs in 2026, what the job involves, and when you actually need one.
How Much Does Consumer Unit Replacement Cost in Glasgow?
In Glasgow, a consumer unit replacement typically costs between £350 and £700 for a standard domestic property. Larger homes with more circuits, older properties needing additional remedial work, or commercial premises will fall at the higher end or beyond.
| Property Type | Typical Cost (Glasgow 2026) | Estimated Duration |
|---|---|---|
| 1–2 bedroom flat | £350 – £480 | 4–5 hours |
| 3-bedroom semi-detached or terraced | £450 – £580 | 5–7 hours |
| 4+ bedroom detached | £550 – £700+ | 6–9 hours |
| Older property with earthing or tails upgrade | £600 – £900+ | Full day |
| Commercial premises | POA (quote required) | Varies |
Prices include the new metal consumer unit, all circuit breakers and RCDs/RCBOs, labour, and the Electrical Installation Certificate. VAT is included.
What Can Push the Price Up?
Several factors specific to Glasgow properties can add to the base cost:
- Meter tails replacement: The cables connecting the meter to the consumer unit often need replacing in older properties — typically adding £80–£150.
- Earthing upgrades: Many pre-1980s Glasgow homes require new earth bonding to gas and water pipes to bring the installation up to current BS 7671 standards. Usually £60–£120.
- Additional circuits: If you want to add new circuits at the same time (e.g., for an EV charger or electric shower), this is the ideal opportunity. Each additional circuit typically adds £80–£200.
- DNO isolation: If the electricity supply needs to be isolated at the meter by SP Energy Networks (the Scottish Power Distribution Network Operator), there may be a small additional fee and scheduling delay.
What Is a Consumer Unit and Why Does It Need Replacing?
A consumer unit (commonly called a fuse board or fuse box) contains the main switch, circuit breakers and residual current devices (RCDs) that protect every circuit in your home. When a circuit overloads or a fault occurs, the relevant breaker trips, cutting the power to that circuit and protecting the wiring from overheating.
Consumer units typically need replacing for one of four reasons:
- Age and wear: Units more than 25–30 years old — common in Glasgow tenements and 1970s–1980s properties — often lack modern RCD protection and cannot safely support today’s electrical loads.
- Regulatory compliance: Since 2016, all domestic consumer units must be in a non-combustible (metal) enclosure under the 18th Edition wiring regulations. Older plastic units are now non-compliant.
- Persistent tripping or fault conditions: A unit that trips repeatedly, fails to hold its breakers, or shows signs of burning or corrosion needs immediate replacement.
- Capacity: Adding high-demand appliances — EV chargers, electric showers, underfloor heating — often requires a larger consumer unit with more ways (slots) and dedicated circuits.
Signs You Need a New Consumer Unit in Glasgow
You may already know your fuse board is failing — but sometimes the signs are less obvious. Watch out for:
- Breakers that trip for no apparent reason, or that you cannot reset
- A plastic (non-metal) fuse box — these no longer meet current standards
- Old-style rewirable fuses instead of modern circuit breakers
- No RCD protection — check if your board has devices labelled “RCD” or “RCBO”
- A burning smell, scorch marks, or discolouration around the unit
- The board is visibly overcrowded or circuits have been doubled up
- Your EICR has returned a C1 or C2 code relating to the consumer unit
For a detailed breakdown of warning signs, see our guide: 7 signs your fuse board needs replacing in Glasgow.
What Happens During a Consumer Unit Replacement?
Here is what to expect on the day of your consumer unit replacement in Glasgow:
- Initial assessment: Your electrician inspects the existing consumer unit, meter tails, earthing and bonding. If any additional remedial work is required, this is agreed before work begins.
- Isolation: The electricity supply to your property is isolated. You will have no power for the duration of the replacement — typically 4–8 hours. Plan accordingly (charge devices the night before, arrange alternative heating in winter).
- Removal of old unit: The old consumer unit is carefully removed. Each circuit cable is labelled to ensure correct reconnection.
- Installation of new metal unit: The new unit is fixed to the wall and all circuit cables are connected to the correct breakers or RCBOs. The main switch, RCDs and individual circuit breakers are all installed to current BS 7671 18th Edition standards.
- Testing: Every circuit in the property is tested individually — insulation resistance, earth loop impedance and RCD trip times — to confirm the installation is safe and compliant.
- Certification: You receive an Electrical Installation Certificate (EIC) for the work. This is a legal document you should keep safely — it will be required when selling the property or making an insurance claim.
Consumer Unit Types: What Your Electrician Will Install
Modern consumer units come in several configurations. Your electrician will recommend the right type based on your property’s circuits and your future plans:
| Unit Type | How It Works | Best For |
|---|---|---|
| Dual RCD consumer unit | Two RCDs protect groups of circuits. If one trips, half the house loses power. | Standard domestic — cost-effective and reliable |
| High integrity (RCBO) unit | Each circuit has its own RCBO — a combined MCB and RCD. If one circuit trips, all others stay on. | Larger homes, properties where losing half the supply is unacceptable |
| Split load unit | Combines RCDs and RCBOs. Critical circuits (e.g., freezer, alarm) are individually protected. | Properties needing flexibility and reliability |
For most Glasgow flats and terraced houses, a dual RCD or RCBO unit is the standard choice. We recommend RCBO units for larger homes or where nuisance tripping has been a persistent problem.
Glasgow-Specific Considerations
Tenement flats and shared supplies
Glasgow has a high proportion of traditional tenement flats, many of which share an incoming supply and meter cupboard. In these properties, access to isolate the supply sometimes requires coordination with the building factor or neighbouring residents. Our team handles this as standard and will advise you in advance if any arrangement is needed.
Older wiring and pre-1980s properties
Many Glasgow properties built before 1980 still have original wiring — sometimes rubber or aluminium cables — that has deteriorated significantly. When we replace the consumer unit in an older property, we inspect the condition of the existing wiring and will advise you honestly if a full or partial rewire is recommended alongside the unit replacement. We will never pressure you into additional work, but we will not issue certification for an installation we cannot confirm is safe.
Combination with EICR
If you are having a consumer unit replaced in a rental property to comply with the Repairing Standard, many Glasgow landlords combine this with an EICR inspection at the same visit. This is often more cost-effective and ensures the entire installation is checked at the same time. Ask us about combined pricing when you book.
Combination with EV charger installation
If you are planning to install a home EV charger, a consumer unit replacement is often needed at the same time — particularly in properties built before the 1990s. Combining both jobs in a single visit reduces labour costs and disruption significantly.
Frequently Asked Questions About Consumer Unit Replacement in Glasgow
How much does consumer unit replacement cost in Glasgow?
Consumer unit replacement in Glasgow typically costs between £350 and £700 for a standard domestic property. The price depends on the size of the property, the number of circuits, and whether additional work — such as earthing upgrades or meter tails replacement — is required.
How long does a consumer unit replacement take in Glasgow?
A consumer unit replacement in Glasgow usually takes between 4 and 8 hours for a standard domestic property. You will be without power for most of this time, so it is best planned for a weekday when you can be out of the property.
Do I need to notify my landlord or building factor before replacing a consumer unit?
If you rent your property, your landlord must arrange and pay for the consumer unit replacement — you cannot instruct the work yourself. If you own a flat in a Glasgow tenement, check with your factor regarding access to the meter cupboard and any shared supply considerations.
Does a new consumer unit need to be metal?
Yes. Since 2016, the UK wiring regulations (BS 7671 18th Edition) require consumer units in domestic properties to be housed in a non-combustible enclosure — in practice, this means a metal consumer unit. Plastic consumer units are no longer acceptable for new installations or replacements.
Will I need an EICR after a consumer unit replacement in Glasgow?
After any consumer unit replacement, the electrician will issue an Electrical Installation Certificate (EIC) covering the new unit. An EICR is not automatically required for the replacement itself, but your electrician may recommend one if the rest of the wiring is old or untested — particularly in Glasgow tenements and pre-1980s properties.
Book a Consumer Unit Replacement in Glasgow
Our SELECT-registered electricians carry out consumer unit replacements across all Glasgow areas — from city-centre flats to detached houses in the South Side and East End. We supply and fit all leading brands, provide full certification, and can combine the job with an EICR or EV charger installation for maximum value.