What is this?
UK electrical installations must comply with BS 7671 (the IET Wiring Regulations), which is updated periodically. A home may not meet current regulations because it was wired to an older edition of the regulations, because of unauthorised alterations, or because components have deteriorated. It is important to note that an installation does not automatically become non-compliant when regulations change — it only needs to meet the regulations that were in force when it was installed, unless modifications are made.
Common causes
- Installation wired to older editions of the Wiring Regulations and never upgraded
- DIY electrical work carried out without professional oversight or notification
- Extensions or alterations that were not properly integrated with the existing installation
- Lack of RCD protection, which has been required for certain circuits since the 17th Edition
- Outdated consumer unit with rewirable fuses instead of MCBs
Is it dangerous?
An installation that does not meet current regulations is not necessarily immediately dangerous, but it may lack important safety features. Older installations without RCD protection, proper earthing, or modern circuit breakers carry a higher risk of electric shock and fire. An EICR will identify any actual dangers versus areas that simply do not meet the latest standards.
Can I fix it myself?
Electrical compliance work must be carried out by a qualified electrician. Most upgrades (consumer unit replacement, new circuits, earthing changes) are notifiable under Part P of the Building Regulations. The first step is to get an EICR to understand exactly what needs attention.
When to call an electrician
Call an electrician to carry out an EICR if you are concerned about your home's electrics, if you are buying or selling a property, if you are a landlord with rental obligations, or if any electrical work is being planned. The EICR will identify all defects and prioritise them by severity.
What will an electrician do?
Carry out a full Electrical Installation Condition Report (EICR)
Explain the findings and prioritise remedial work by safety risk
Upgrade the consumer unit to a modern unit with RCD protection and MCBs
Improve earthing and bonding to current standards
Replace any deteriorated wiring or damaged components
Issue appropriate certificates and notify Building Control for notifiable work
Typical cost
£200 – £2000
An EICR costs £200–£350. Remedial work varies: consumer unit upgrade £350–£600, earthing improvements £200–£400, partial rewire £1,000–£3,000, full rewire £3,000–£6,000.
