The short answer: Condition ratings help you find the important parts of a home survey, but the number is only a starting point. Read it with the explanation, limitations and recommended action. A report with red ratings is not automatically a failed house, and a green rating is not a guarantee against future problems.
What the ratings are designed to do
A survey contains many observations about different building elements. Ratings make that information easier to navigate, directing attention to urgent issues, necessary work and areas that could not be inspected. They are not a mathematical score for the whole property.
Do not add up the numbers or compare houses simply by counting red boxes. Two observations with the same rating can have different causes, consequences, investigation needs and repair costs.
The basic meanings
| Rating | Meaning | How to use it |
|---|---|---|
| 1 | No repair currently needed | Continue normal maintenance; read any accompanying advice. |
| 2 | Repair or replacement needed, but not serious or urgent | Understand the work and include it in your plans. |
| 3 | Serious defects and/or urgent repair, replacement or investigation | Clarify the risk and act on the recommendation promptly. |
| NI | Not inspected | Read why and whether further investigation is advised. |
Why a rating 3 does not equal “do not buy”
A serious defect and an urgent need for further evidence can both require attention, but they are not the same diagnosis. Ask whether the finding describes confirmed damage, a safety concern or uncertainty that needs resolving. The written explanation matters more than the colour alone.
Your decision should take account of the property, available evidence, your budget and appetite for work. A rating is not an instruction to negotiate a particular discount or automatically abandon the purchase.
Do not overlook NI or the limitations
Not inspected means there is an information gap, not confirmation that an element is sound or defective. A locked roof space, fitted finish or inaccessible area may limit the answer. Ask which gaps matter to your purchase decision and what proportionate follow-up could address them.
Read limitations in the relevant section as well as any summary. They explain how much confidence you can place in the assessment of a particular part of the building.
Turn the findings into a short action list
- Discuss serious or unclear points with the surveyor rather than guessing from the rating.
- Separate recommended investigations from confirmed repair work.
- Send legal and document questions to your conveyancer.
- Obtain specialist findings or quotations where recommended before exchange.
- List planned maintenance separately so it does not obscure urgent matters.
- Keep a record of answers and any uncertainties you are accepting.
Use evidence when deciding what happens next
A contractor’s quotation may help budget for known work, but an unresolved cause may first need investigation. Ask what evidence is needed before relying on a repair figure. Significant unexpected findings may support a discussion with the seller, but neither a rating nor a report guarantees a price reduction.
If you are choosing a survey, ask how the report explains priorities and follow-up. The aim is usable advice about the property, not simply a page of coloured numbers.
Frequently asked questions
Does a condition rating tell me the repair cost?
No. It highlights condition and urgency. Cost depends on diagnosis, scope, access and appropriate quotations.
Is NI worse than a red rating?
They mean different things. NI identifies an uninspected element. The report should explain the limitation and any further investigation needed.
Can a house pass or fail a RICS home survey?
A condition survey is not a universal pass-or-fail test. It provides findings and advice to help you make an informed purchase decision.
Which survey is right for the property?
Compare our Level 2 Home Survey and Level 3 Building Survey. Share the address, age, construction, alterations and your concerns before choosing. A more expensive level is not automatically the right answer for every home.
Related homebuyer guides
Sources and scope
Guidance checked against the primary sources below on 17 October 2026. This article concerns residential purchases in England and Wales. It is general information, not a property inspection, specialist test or advice on your individual legal position.