Electrical Remedial Construction Work

1) Electrical remedial works are carried out following agreement with the client and usually occur after a Periodic Electrical Inspection has taken place that has identified faults or dangers within the electrical system. 

Electrical remedial works can also be undertaken following events such as:

• Flooding
• Storm Damage
• Fire Damage
• Building Works

It is imperative that the extent of the damage has been correctly surveyed prior to quoting for remedial works to minimise any unexpected surprises. Where damage to the building has been sustained this should ideally be repaired before electrical works are carried out to prevent further damage during later construction works. Remedial building work will be at additional costs.

2) Costs of Remedial Works

Costs of electrical remedial works can vary but as a guide for 2026, I have listed below typical jobs and typical costs along with the scope of remedial works.

Following a Fire in the Consumer Unit / Fuse Box

Replace Mains Tails (Cables), Earthing Conductor, Repair every electrical circuit cable and Bonding where required. Install new consumer unit and certify all work

£1800-£2600

Following Flood Damage

Water Damage to ground floor cables resulting in partial rewire to socket circuit, cooker circuit and replacement of all sockets. Electrical Installation / Minor works certificate issued.

£1800-£3100

Building Works Damage

Damage sustained to 2-4 cables from building works. Cables need to be accessed and repaired. Minor works Certificate Issued.

£350 - £500

Minor Fire in Consumer Unit / Fuse Box

Damage to 1-3 Circuit Breakers or switchgear. Cable repairs carried out, switchgear replaced but new consumer unit not necessary.

£300 - £550

Missing Earthing to 1 or more Circuits discovered following EICR

Greatly depends on access to affected areas but assuming easy access in an empty building

£500-£800

Break on a Ring Final Circuit (Socket Outlets)

This repair can involve an hour of fault finding right through to several hours of investigation and possible cable rewiring in sections

£90 - £850

Rodent Damage to Cables in Cavity / Loft Space / Under Floors

This repair can involve fixing one cable or several cables. As access to various places will vary so will the costs of repairs.

£250 - £1500

Upgrading RCD protection

Where RCD protection already exists but upgrades are required this is usually a straightforward fix. In some cases a total consumer unit replacement may be necessary if parts are not available.

£130 - £1200

‘Green Goo’ resulting in the rewire of one or more circuits

£800 for one simple circuit up to £1600 for a circuit with multiple points and on to the cost of a full rewire for the property £6-10k

3) Typical Remedial Works Following EICR

There are a variety of different defects that may attract remedial works in a domestic property such as:

Single Insulation Visible Outside Enclosure

Where this affects several downlights, for example, it could costs £140 per room to rectify.

£140 - £280

Main Equipotential Bonding Undersized

Replacing Earth Bonding to pipework and other extraneous parts can be a straightforward installation to one service but where both services are required to be bonded and the run is difficult the costs will increase.

£90-£450

Consumer Unit is Damaged

Fixing this problem is absolutely necessary remedial work. If parts are still available the costs will be reasonable. If the unit is outdated and no replacement parts are available then the costs could involve replacing the consumer unit.

£150 - £1500

Water Ingress Issues

From an electrical standpoint the costs can vary but the main costs will involve rectifying the water ingress source. This could be rising damp, penetrating water ingress or a leaking pipe. Electrical speaking, costs may be relatively low such as replacing a socket and galvanized back box right through to replacing several water damaged cables.

£150 - £1500

4) Typical Repair Costs for Commercial premises remedial works

Replacement Distribution Board

This depends on the size of the board and what is required.

£2200 - £3300

Repairing Damage to a single circuit

Where damage has occurred to a single circuit and repairs are required.

£120 - £450

Equipotential bonding to Structural Steel or Services

Where safety earth electrical connections are required and certification following works

£400 - £1500

Missing Earthing

Where earth connections are missing, broken or require replacement.

£300-£1600

Replacing a Mains Isolator

Where a mains isolator has failed without associated cable damage

£150 - £200

Replacing Mains Isolator and Tails

Where a mains isolator has failed and tails have also failed.

£270 - £370

5) Conclusion

The costs of EICR remedial works can vary based on a variety of factors but regardless of the cost of the remedial work, it is important that safety standards are met following the repair and that the installation is left in a safe condition. If you would like a quote for Electrical Remedial Works in Liverpool, Warrington or surrounding areas then please get in touch using our contact form and we will respond quickly.