Inspection and testing are complementary, not competing services. Inspection considers the visible condition, arrangement and suitability of an installation. Electrical testing uses instruments and defined procedures to assess particular characteristics. A property assessment may include both, so the most useful question is what you need the assessment to establish.
For a condition assessment with clear findings and priorities, see GMB’s electrical inspection service.
What inspection can reveal
An electrician may identify visible damage, deteriorated fittings, unclear labelling, unsuitable arrangements or signs of overheating. Inspection also helps determine where further investigation is needed. It is particularly useful when you do not have a clear history of the property’s electrical work.
Accessible areas matter. Concealed wiring and inaccessible spaces cannot be fully assessed from a general visual visit. The report should explain what was accessible and what remained outside scope, rather than imply that every part of the building was examined.
What instrument testing adds
Tests can assess characteristics that appearance alone cannot confirm, such as aspects of insulation, earthing or protective-device operation. The electrician selects the relevant tests for the purpose and installation. Some procedures require isolation and disconnection of equipment.
A single test does not prove the entire installation is safe. An RCD result, for example, is not a complete fixed-wiring assessment. Likewise, a portable appliance tag says something different from a report on the building’s circuits.
Choose the brief based on the decision
For a pre-purchase review, explain the access available and the decision deadline. For renovation planning, provide proposed loads and drawings. For an insurer or property manager, share the actual request so the electrician can confirm whether the proposed report addresses it.
If the issue is an active fault, say so at booking. Repeated trips or a burning smell should not be treated simply as a request for a routine written report. Immediate safety action or fault diagnosis may need priority over the broader assessment.
Ask for scope, limits and priorities in writing
Confirm whether the service includes inspection only or inspection with specified tests, which areas are covered, and whether power interruptions are expected. Agree the report format and whether repairs are included or separately quoted.
Useful findings separate urgent hazards from planned maintenance and further investigation. Ask for explanations you can act on, not just a list of technical terms. Keep the report with later repair records so a previously identified issue is not assumed to have been fixed without evidence.
- State the purpose of the assessment and any third-party requirements.
- Provide previous reports and known defects.
- Arrange access and approval for required interruptions.
- Confirm how exclusions and follow-up recommendations will be recorded.