Of all the questions buyers ask about home surveys, this one produces the most surprise: will the survey check the gas and electrics? The assumption is understandable – the survey is the big professional inspection of the house, and gas and electricity are two of the things that can genuinely hurt you. So the honest answer catches people out: a home survey inspects the gas and electrical installations, but it does not test them. Those are different things, the difference is deliberate, and understanding it is the key to using a survey properly – and to knowing when to commission the specialist reports that do the testing.
Here is what a surveyor actually does with the services, what the survey report’s wording really means, and how buyers should act on it.
What a home survey is – and the boundary it works within
A home survey is a visual, non-invasive inspection of a property’s condition. The surveyor examines what can be seen and safely reached without dismantling anything: they do not lift fitted floor coverings, open up walls, move heavy furniture – or operate, dismantle and test the building’s service installations. RICS-regulated surveys are delivered under published standards that define these inspection levels precisely, which is why survey reports describe the services carefully and recommend specialist investigation where it is warranted.
The boundary is not a shortcoming; it is the design. Testing an electrical installation or a gas system is a regulated specialist activity in its own right, performed by different professionals with different qualifications, instruments and legal authorisations. A building surveyor testing the gas would be as out of place as a gas engineer assessing your roof structure. The survey’s job with services is different and genuinely valuable: to look expertly, to spot the visible warning signs, and to tell you clearly when specialist testing should happen before you commit.
What the surveyor can see – and does report
A visual inspection in experienced hands catches a great deal:
On the electrical side, the surveyor will typically observe the consumer unit (fuse box) and its apparent age and type – an old fuse-wire board tells a story a modern unit with circuit protection does not – visible wiring styles and materials where they can be seen, the general age and condition of sockets, switches and fittings, any obvious amateur additions or damage, and whether there is evidence of relatively recent electrical work or certification such as stickers or paperwork on display. From these visual clues, the report can often say something useful about the installation’s apparent era and flag the likelihood that it predates modern standards.
On the gas side, the surveyor will note the presence, type and apparent age of the boiler and visible gas appliances, their location and flue arrangements as visible, any service history on display (service stickers and records), signs of distress such as staining around appliances, and the state of visible pipework. What they will not do is fire up the boiler for assessment, test the system or judge combustion – that is engineer territory.
Across both, the surveyor also reads context a checklist cannot: a house that has clearly not been touched for forty years, an extension with suspiciously improvised additions, a rental history suggesting certification may exist and be worth requesting. This is where professional experience earns its fee – the visual clues add up to a risk picture.
Reading the report’s language
Because the inspection is visual, survey reports use careful, consistent language about services – and it pays to read it the way it is meant. Phrases along the lines of “the installation was not tested” are standard and appear in effectively every report; they are a statement of scope, not an evasion. What matters is what sits alongside them: condition ratings and recommendations. A recommendation to obtain testing by a suitably qualified electrician or a Gas Safe registered engineer before exchange is the report doing exactly its job – converting visual risk indicators into a concrete next step at the moment you still have negotiating power.
The practical rule for buyers: treat “not tested” as the constant, and the recommendation level as the signal.
The specialist reports that do the testing
When the survey recommends further investigation – or when the visual picture simply leaves you wanting certainty – these are the instruments that provide it:
- For electrics: an EICR (Electrical Installation Condition Report), carried out by a qualified electrician. The installation is tested and inspected, faults are classified by seriousness, and the report states whether the installation is satisfactory for continued use. It is the recognised answer to “are the electrics actually safe?” – and, notably, the same report type landlords are required to hold for rented homes, which is why recently rented properties often have one worth asking for.
- For gas: inspection and testing by a Gas Safe registered engineer – the Gas Safe Register is the legal register for gas work in the UK. An engineer can check the system and appliances, test for tightness and assess safe operation in ways no visual inspection can, and a boiler’s service by a registered engineer also generates the paperwork trail buyers should ask to see.
Both are modest in cost relative to the purchase – and dramatically cheaper than the rewire or boiler replacement discovered after completion. Where the survey has flagged concerns, commissioning them before exchange turns unknowns into either reassurance or negotiation.
The sensible buyer’s sequence
Putting it together, the services question fits into a house purchase like this:
- Commission the survey appropriate to the property, and read the services sections with the visual/testing distinction in mind.
- Ask the seller for paperwork the moment services are flagged – or before: recent EICR, electrical installation certificates for any new work, boiler service records, Gas Safe certificates for installations, and (for ex-rental properties) the safety records landlords must keep.
- Act on recommendations before exchange. Where the survey advises testing, commission the EICR and the gas inspection while the price is still negotiable. Access is usually arrangeable through the agent.
- Use the results. Satisfactory reports buy peace of mind; unsatisfactory ones buy either remediation by the seller, a price adjustment that reflects the real cost, or – occasionally – the walk-away that saves you from someone else’s problem.
The survey and the specialist tests are not rivals; they are a sequence. The survey looks at the whole property and tells you where certainty is worth buying; the specialists then provide it. Buyers who understand that get the best of both – and are never caught out by the sentence “the installation was not tested”, because they knew from the start that testing was never the survey’s job.
Frequently asked questions
Will my surveyor turn the boiler on or test the sockets?
No – a home survey is a visual, non-invasive inspection, and surveyors do not operate or test service installations. The surveyor observes the visible condition, age indicators and warning signs of the gas and electrical installations, reports on them, and recommends testing by a qualified electrician or Gas Safe registered engineer where the visual evidence warrants it.
What is an EICR and do I need one when buying a house?
An EICR – Electrical Installation Condition Report – is a formal test and inspection of a property’s electrics by a qualified electrician, classifying any faults and stating whether the installation is satisfactory. It is not automatic when buying, but it is the right response when a survey flags electrical concerns, when the installation is visibly dated, or when no recent electrical paperwork exists – and it is best commissioned before exchange, while findings can still influence the deal.
Can I ask the seller for gas and electrical certificates instead of testing?
Always ask – recent certificates, boiler service records and (for ex-rental homes) landlord safety records are genuinely useful and can reduce what needs testing. But paperwork shows a moment in time and installations age, so where documents are old, absent or inconsistent with what the surveyor saw, current testing remains the reliable answer.
