Electrical Inspection & Testing in South London
Domestic, landlord and commercial electrical inspections, EICRs and fault investigation—carried out by NAPIT-registered electricians with City & Guilds 2391 inspection and testing qualifications.
Understand the condition of your electrical installation
An Electrical Installation Condition Report (EICR) helps identify deterioration, damage, defects and safety risks in existing wiring and equipment. We explain the findings in plain English, distinguish urgent issues from recommendations and provide a clear route to remedial work where needed.
An older installation is not automatically unsatisfactory simply because it does not meet every requirement of the current edition of BS 7671. Observations are assessed against the actual risk and the inspection's agreed scope and limitations.
Testing for homes, landlords and businesses
Domestic EICRs
Condition reports for homeowners, buyers and occupants seeking a professional assessment of their electrical installation.
What a domestic EICR covers →Landlord electrical safety
Periodic inspection and reporting for rented properties, with practical guidance on observations, remedial work and documentation.
Read landlord EICR guidance →Commercial inspection
Inspection and testing for shops, offices and other business premises, planned around access, operational requirements and agreed limitations.
Commercial EICRs & testing →Fault finding
Investigation of nuisance tripping, insulation resistance concerns, circuit faults and other electrical issues.
Explore electrical fault finding →Remedial works
Targeted repairs or upgrades following inspection, with prioritisation based on safety and the observations recorded.
Understand EICR remedial work →Verification & certification
Appropriate inspection, testing and electrical certification following relevant installation or alteration work.
EICR vs electrical certification →What each inspection involves
Different types of electrical testing answer different questions. Start with the guidance relevant to your property; when you're ready, the enquiry buttons on this page let you discuss the scope with us.
Domestic EICRs: what is included?
A domestic EICR assesses the condition and safety of an existing installation. It can be useful when purchasing a home, planning a refurbishment or investigating concerns about older wiring. The agreed scope may include the consumer unit, earthing and bonding, circuits, accessible accessories and electrical test results.
The report records observations and any inspection limitations. It does not automatically mean the property needs rewiring or a new consumer unit.
What happens after an unsatisfactory report?
We explain the recorded C1, C2 and FI observations and the work or further investigation needed. Remedial action is based on the actual defect: it might involve a faulty accessory, a wiring fault, improved protection or other specific repairs.
A consumer unit replacement or rewire is not assumed simply because an EICR is unsatisfactory. For suspected faults, see our electrical fault-finding service →
EICR, installation certificate or minor works?
An EICR reports on the condition of an existing electrical installation. An Electrical Installation Certificate (EIC) is issued for applicable new installation work, such as new circuits. A Minor Electrical Installation Works Certificate is suitable for certain minor alterations or additions to existing circuits.
We advise on the appropriate inspection, test and documentation for the work commissioned, rather than treating these documents as interchangeable.
What do EICR observation codes mean?
Immediate risk of injury. Urgent action is required.
Urgent remedial action is required.
Investigation is required without delay.
Improvement is advised but this code alone does not make an EICR unsatisfactory.
An EICR is generally assessed as unsatisfactory where C1, C2 or FI observations are recorded. The inspector's findings and any limitations should be read together with the overall assessment.
Inspection backed by practical testing
Depending on the agreed scope and safe access, inspection and testing may include:
- Consumer units, protective devices and earthing arrangements
- Protective conductor continuity and bonding
- Insulation resistance and polarity
- Earth fault loop impedance and RCD performance
- Socket outlets, lighting circuits and visible wiring condition
- Identification of circuits, defects and appropriate limitations
Competence and compliance
City & Guilds 2391 supports competent electrical inspection and testing. NOD Electrical Services is a NAPIT-registered contractor and works to the applicable requirements of BS 7671 and relevant legislation.
Testing methods, reporting and certification are selected for the installation and type of work. An EICR is a condition report, not a certificate that every aspect of an existing installation meets the latest edition of BS 7671.
Learn about NOD →From booking to a clear report
Discuss the property
We establish the installation type, inspection scope and any known concerns.
Inspect and test
We carry out appropriate visual inspection and electrical tests, recording agreed limitations.
Explain findings
You receive a report with observations, codes and a clear overall assessment.
Plan next steps
Where necessary, we explain remedial priorities and can provide a separate estimate for repairs.
Inspection & testing FAQs
How often does a rented property need an EICR?
In England, private landlords generally must ensure electrical installations are inspected and tested at intervals of no more than five years, or sooner where the most recent report requires it. Specific duties can vary by property and tenancy.
Will the power need to be switched off?
Some tests require circuits to be safely isolated. We discuss access and likely interruptions before starting.
Does a C3 mean the report is unsatisfactory?
No. A C3 is an improvement recommendation. A report with C3 observations only is not automatically unsatisfactory.
Does an old fuseboard automatically fail?
No. Its condition, protective measures and the associated risks must be assessed. Age alone is not sufficient grounds for an unsatisfactory report.
Can you carry out remedial work?
Yes. We can explain the observations and provide a separate estimate for appropriate remedial work.
Which areas do you cover?
We are based in Streatham and work across South London, including Balham, Tooting, Clapham, Brixton, Wandsworth and Wimbledon. See areas we cover.
Need an EICR or electrical testing?
Tell us about your property and the inspection you need. We'll discuss the scope, access and next steps.
NAPIT-registered electrical contractor · Based in Streatham · Serving South London