Buying a listed building? Why a Level 3 Building Survey matters
Buying a listed building can be incredibly rewarding.
Historic properties often have character, craftsmanship and construction that simply isn't found in modern housing.
They can also be more complex.
Traditional materials behave differently, previous alterations may have changed how the building performs, and repairs that would be perfectly normal on a modern property may not always be appropriate for a listed one.
For anyone considering buying a listed or historic property, understanding the building before committing to the purchase is particularly important.
What does it mean if a property is listed?
A listed building is recognised as having special architectural or historic interest.
Listing doesn't mean the property cannot be altered or repaired, but changes affecting its special character may require listed building consent.
Importantly, the listing generally applies to the whole building rather than simply the attractive front elevation.
Extensions, internal features and structures within the curtilage may also be relevant depending on the individual property and circumstances.
This means previous alterations can be an important consideration when buying.
Why are historic buildings different to modern houses?
Many listed buildings were constructed using materials and methods that pre-date modern cavity walls, damp-proof courses and cement-based products.
Depending on the age and type of property, construction may include:
Solid brick or stone walls
Timber framing
Lime mortar and lime plaster
Traditional roof structures
Handmade bricks and tiles
Older forms of drainage and ventilation
These materials often manage moisture differently from modern construction.
Problems can arise when historic fabric is repaired or altered using materials that are incompatible with the original building.
Understanding the construction is therefore just as important as identifying individual defects.
Why is a Level 3 Building Survey usually appropriate?
A RICS Level 3 Building Survey provides the highest level of detail within the RICS Home Survey Standard.
It is generally suited to properties that are older, larger, extensively altered, unusual in construction or in poorer condition.
Listed buildings frequently fall into several of these categories.
Rather than simply identifying that a defect exists, a detailed survey should consider its likely cause, significance and the type of repair that may be appropriate.
For historic buildings, this distinction is particularly important.
A recommendation that might be reasonable for a modern house could potentially be unsuitable for traditional construction.
Previous repairs can be as important as current defects
One of the things I look carefully at when surveying older buildings is how they have been repaired and altered over time.
Historic properties rarely remain completely unchanged.
Examples may include:
Cement mortar replacing original lime pointing
Modern impermeable renders
Replacement windows
Altered roof coverings
Removed internal walls
Extensions
Converted roof spaces
Modern damp-proofing treatments
Some alterations may be perfectly satisfactory.
Others can change the way the original building performs or lead to deterioration over time.
The important question isn't simply whether something is modern or old. It is whether it is appropriate for the existing construction.
Damp needs to be properly understood
Dampness is one of the areas where historic buildings are commonly misunderstood.
Older solid-walled buildings were generally constructed to manage moisture differently from modern cavity-walled properties.
Moisture readings alone rarely explain why dampness is occurring.
When investigating damp in an older building, factors such as external ground levels, rainwater disposal, pointing, render, ventilation, internal finishes and previous alterations all need to be considered.
Treating the symptom without understanding the cause can sometimes make the problem worse.
Roofs, chimneys and high-level areas matter
Historic buildings often contain complicated roof structures, numerous chimney stacks, parapets, valleys and areas of leadwork.
These elements can be expensive to repair and may be difficult to inspect properly from ground level.
Where appropriate and conditions allow, additional inspection methods such as pole cameras or drone photography can provide valuable information about areas that would otherwise be difficult to see.
This can be particularly useful when assessing large or complex historic properties.
What about listed building consent?
A building survey isn't a legal investigation into whether every historic alteration received the necessary consent.
However, where significant alterations are apparent, they may need further investigation through the buyer's solicitor.
This could include extensions, replacement windows, internal alterations, structural changes or changes to important historic features.
The survey and legal enquiries therefore work alongside one another.
Identifying alterations during the inspection can help the buyer understand what questions should be raised before exchange of contracts.
Repairs may require a different approach
Historic buildings generally benefit from repair rather than unnecessary replacement.
Traditional materials and details often form an important part of both the character and performance of the building.
Where repairs are needed, the aim should usually be to understand why deterioration has occurred before deciding how it should be addressed.
This may mean considering lime-based materials, traditional detailing or specialist contractors with experience of older buildings.
That doesn't mean every repair to a listed property has to be complicated or expensive.
It means the repair should be appropriate to the building.
A listed building isn't necessarily a problem building
The word "listed" can sometimes make buyers nervous.
It shouldn't automatically do so.
Many listed buildings have stood successfully for hundreds of years and continue to provide excellent homes.
Their age does, however, mean they need to be assessed in the context of their construction rather than against the expectations of a modern house.
A well-maintained historic building constructed using traditional materials can perform extremely well.
Equally, inappropriate alterations or neglected maintenance can create significant problems.
The survey is about understanding which of those situations you're dealing with.
Final thoughts
Buying a listed building requires a slightly different mindset to buying a modern property.
The aim isn't to find an old house without defects. That property probably doesn't exist.
It is to understand the building, recognise how it has changed over time and identify the issues that could affect future repair, maintenance and ownership.
A detailed Level 3 Building Survey can provide that context and help buyers make a more informed decision before committing to the purchase.
At RP Surveyors, we provide RICS Level 3 Building Surveys for listed, historic, period and traditionally constructed properties throughout Nottinghamshire and the wider East Midlands.
If you're considering purchasing an older or listed property and would like to discuss the most appropriate survey, please get in touch.