RICS Level 3 Building Survey in Great Ponton

Great Ponton properties can throw up the kind of issues that make a RICS Level 3 Survey well worth having. The village has a notable share of pre-1919 homes, many built with traditional solid wall construction and limestone and brick facades. Those older buildings often do not have modern damp-proof courses, and plenty have been altered in one way or another over the decades. Our surveyors know the signs to look for in these historic homes, from failing lime mortar to evidence of earlier movement or past repairs. Different building periods tend to come with their own familiar defects too, including the shallow foundations often seen in Victorian-era properties and the solid brick walls typical of Edwardian homes.

Under the ground in and around Great Ponton, the geology is mainly Jurassic limestone, specifically the Lincolnshire Limestone Formation, with superficial deposits in places that include till, or boulder clay. The bedrock is usually stable, but clay-rich superficial deposits can create a shrink-swell risk, especially in drought or after excessive rainfall. That can affect foundations and show up as cracking or uneven floors. As part of the survey, we check for signs of this sort of movement and set out any remedial action that may be needed. We also take account of nearby trees, because large deciduous trees in clay soil areas can draw out moisture and contribute to subsidence, something that matters in a rural village setting like this.

Flooding is a real point to consider here. The River Witham is close by, and some parts of Great Ponton are identified as being at risk from both river flooding and surface water flooding, especially along roads and in lower-lying spots. Homes within flood risk zones can carry hidden damage or need particular mitigation measures. Our surveyors look for evidence of previous flooding, water ingress and damp-related defects that may suggest an ongoing problem. Surface water flooding is often most noticeable on the lower-lying roads around the village centre, particularly during periods of heavy rainfall.

Buyers also need to factor in Great Ponton's Conservation Area status. A property inside the Conservation Area may fall under Article 4 Directions, which can remove permitted development rights so that even fairly minor external changes need planning permission. We will highlight any works that may require consent, and we can also advise on what listed status may mean for future renovation plans. The village's traditional limestone cottages and historic farmhouses are part of the architectural character these designations are there to protect, and that can have a direct effect on maintenance costs and what alterations are possible.

• Pre-1919 solid wall construction
• Potential shrink-swell from clay deposits
• Flood risk from River Witham
• Conservation Area planning constraints
• Tree proximity subsidence risk

From our work across South Kesteven and nearby Lincolnshire villages, a few issues come up repeatedly in Great Ponton. Damp is one of the main ones, especially rising damp in older homes with solid walls or ineffective damp-proof courses. Penetrating damp is also common where roof coverings or pointing have deteriorated and allowed water ingress. Limestone and brick construction used locally is durable, but mortar can break down over time, particularly where soft lime mortar has been replaced with harder cement-based mixes that hold moisture in the wall.

Older houses here also commonly show timber defects. Wet rot and dry rot may affect window frames, door frames and structural timbers, especially where ventilation is poor or there has been a history of damp. During the inspection, we examine all visible timber carefully for signs of decay or woodworm activity and identify any areas that may need treatment or replacement. Where a property still has original timber-framed elements, we pay close attention to movement or distress that could point to structural problems within the frame itself.

Roof defects are another regular finding in older Great Ponton homes. Many properties in the area have slate or clay tile roofs, and these can suffer from slipped or broken tiles, worn lead flashing and damaged ridge tiles. Guttering and other rainwater goods are often vulnerable to blockage or damage as well, which can then lead to overflow and damp internally. We inspect all accessible roof areas, including valleys, chimneys and flat sections. A fair number of the village's older buildings also have complicated roof forms with several valleys and penetrations, so careful assessment matters.

Movement in an older building is not always serious, but it is something we treat carefully. It may appear as cracks in walls, especially at corners or above openings, as doors and windows that stick or fail to close properly, or as uneven floors. Shrink-swell behaviour in clay-rich soils can play a part, and so can long-term settlement in buildings with traditional shallow foundations. Our surveyors are trained to tell the difference between minor cosmetic settlement cracking and more significant structural movement that needs specialist input. If we see anything that raises concern about the structural integrity of the building, we will recommend further assessment by a structural engineer.