Do I really need a survey when buying a house?
You are not legally required to get a building survey when buying a house in England. Your mortgage lender will carry out a valuation, but that is not a survey — it is a brief assessment to confirm the property is worth what you are paying for it, carried out for the lender's benefit, not yours.
So technically, no, you do not need a survey.
But the better question is: can you afford not to have one?
What a mortgage valuation does not tell you
A mortgage valuation is not a building survey. The valuer will typically spend 20 to 30 minutes at the property, confirm it exists, assess its market value, and flag only the most obvious and serious issues. They will not inspect the roof in detail, assess the drainage, check for damp in every room, or investigate whether that extension was built with building regulations approval.
You will not receive a copy of the valuation report in most cases, and even if you do, it will contain very limited information about the condition of the property.
A building survey is a completely separate exercise, carried out for your benefit, by a surveyor working solely in your interest.
What happens if you skip a survey?
Every year, buyers in Hampshire and across the UK move into properties with significant defects they were not aware of at the time of purchase.
Some of the most common — and costly — issues that surveys identify include:
- Damp — penetrating damp, rising damp, and condensation-related problems are among the most frequently found issues in older properties. Left unaddressed, damp causes damage to plaster, timber, and the structural fabric of the building. Treatment costs vary from a few hundred pounds for minor condensation issues to tens of thousands for serious penetrating damp or failed damp proof courses.
- Roof defects — slipped slates, failed flashings, deteriorating felt, and blocked gutters are common on properties more than 20 to 30 years old. A full roof replacement on a typical Hampshire semi-detached property costs between £6,000 and £15,000 depending on size and materials.
- Structural movement — cracking caused by subsidence, heave, or differential settlement can range from superficial and stable to serious and ongoing. Identifying the type and cause of cracking before you buy allows you to make an informed decision and, where necessary, negotiate appropriately.
- Electrical and heating systems — older properties often have outdated wiring or heating systems that are approaching the end of their serviceable life. A survey will flag these as items requiring attention even if they are not an immediate safety risk.
- Unauthorised alterations — extensions, loft conversions, and structural alterations carried out without building regulations approval can create problems when you come to sell, remortgage, or make a claim on your insurance.
The average cost of unexpected repairs discovered after purchase is estimated at over £5,000. For more significant structural or damp issues, costs can run to £20,000 or more.
Which survey do I need?
The right survey depends on the property you are buying.
RICS Level 2 Home Survey — suitable for most conventional properties built after 1900 that are in reasonable condition and have not been significantly extended or altered. The most common choice for buyers in Hampshire purchasing post-war or modern properties. From £408.
RICS Level 3 Building Survey — recommended for older properties, those of unusual or complex construction, those that have been significantly extended or altered, or any property where visible defects or concerns are already apparent. The appropriate choice for most period properties in Farnham, Winchester, Alton, and the rural Hampshire villages. From £650.
If you are buying a new build direct from a developer, neither of these is appropriate — you need a snagging survey, which focuses on construction defects and poor workmanship before your warranty period begins.
Not sure which level is right for your property? Our survey types guide explains the differences in detail, or call us on 01252 929125 and we will advise you based on the listing.
What about using the seller's survey?
Occasionally a seller will offer to share a survey they have already commissioned — a pre-sale survey. This is becoming more common and can be a useful starting point.
However, a survey commissioned by the seller was carried out in the seller's interest, not yours. If you proceed on the basis of that survey alone, you have no contractual relationship with the surveyor and limited recourse if something significant was missed.
Where a seller provides a pre-sale survey, you may wish to commission a shorter desktop review or a focused inspection rather than a full survey — but take advice from your solicitor before deciding to rely entirely on a survey you did not commission.
When is a survey most important?
A survey is always worth having, but it is particularly important in the following situations:
- The property is more than 30 to 40 years old
- The property has been extended, converted, or significantly altered
- You are buying at the top of your budget and have limited funds for unforeseen repairs
- The property has been empty for a period of time
- You are a first-time buyer with limited experience of property condition
- The property is in a flood risk area — Fleet Pond, the River Wey corridor, parts of Basingstoke near the canal
- The property is of non-standard construction — steel frame, concrete panel, or timber frame
The cost of a survey versus the cost of not having one
A RICS Level 2 survey from Altura Surveyors starts from £408. A Level 3 starts from £650. Against the cost of buying a property — and the potential cost of discovering a significant defect after completion — this is a modest investment.
More practically, a survey that identifies defects gives you leverage. A repair cost estimate in a survey report is a negotiating tool. It is not uncommon for buyers to renegotiate the purchase price by an amount significantly greater than the survey fee once defects are properly documented.
Get a survey quote for your Hampshire property
Altura Surveyors is an independent, RICS-regulated practice serving Hampshire, Surrey and Berkshire. We carry out Level 2 Home Surveys, Level 3 Building Surveys, snagging surveys, and drone roof inspections.
Get an instant, no-obligation quote at alturasurveyors.co.uk/quote or call us on 01252 929125, Monday to Friday, 9am to 5pm.