RICS Level 3 Building Survey in Lanreath

Lanreath’s housing stock throws up some awkward issues, which is where a RICS Level 3 Survey earns its keep. Many homes here are traditional Cornish buildings put together with local stone, slate and render, a mix that sits very differently from modern construction. Our surveyors know those older methods well, so we can pick out problems that turn up in period properties, from solid wall issues and lime mortar decay to the long-term effects of settlement in older structures. We have inspected plenty of homes across the Looe and Lanreath area, so we also know how these traditional buildings behave in the local climate.

Recent property sales around Lanreath show just how mixed the housing stock is. A detached bungalow at 44 Grylls Park in nearby Looe sold for £228,104 in February 2025, while The Corner Cottage, a mid-terrace property in Lanreath itself, achieved £200,000 in October 2024. Different homes need different eyes on them, and that is exactly what our Level 3 Surveys bring. We look from the roof structure right down to the foundations, with close attention on the parts that change from one property type to another.

Cornwall as a whole has seen some price correction, with the county average falling 2.5% to £277,000 by December 2025, although Lanreath has held up better than that. Even with market changes, homes here still attract strong prices, especially detached properties, which average £422,000 across Cornwall. With those sums involved, a detailed survey can make a real difference, helping buyers decide what to do next and, where needed, open the door to repair requests or price renegotiation. We have seen reports identify faults that saved buyers tens of thousands of pounds in surprise repair bills.

Homes in Lanreath and the surrounding area can also be touched by Cornwall’s mining past. Lanreath itself is not a main mining village, but the wider county has a deep underground mining legacy, and that can affect properties miles away from any old workings. Our surveyors look for ground movement, cracking patterns and other signs that may point to mining-related subsidence, and we will recommend suitable searches where needed so you have the full picture.

• Traditional stone and slate construction
• Period properties dating to 16th century
• Mixed housing stock (detached, semi, terrace)
• Proximity to flood risk areas
• Mining history considerations

Lanreath properties face a few region-specific problems that our Level 3 Surveys are designed to catch. With older housing stock, including buildings dating back to the 16th century, damp penetration is still a regular concern. Traditional solid walls do not have the cavity insulation found in modern homes, so they are more exposed to rising damp and condensation, especially through Cornwall’s wet winters. We have found that ventilation is often poor in period homes here, which makes condensation worse and can lead to mould growth that affects both the building fabric and the health of those living in it.

Timber defects are another issue we see quite often. Many traditional Cornish homes have exposed timber beams, original floor structures and roof frames that can suffer from woodworm, wet rot and dry rot if they have not been looked after properly. Our surveyors check these parts closely, judge their current condition and set out recommendations for any treatment that may be needed. We look for active woodworm too, because it can weaken structural timbers badly if left alone. In older homes, it is common to find original timber has been affected by decades of seasonal moisture changes.

Structural movement is also something to think about in older Lanreath properties. Homes built on clay soils can move as moisture levels rise and fall through the year, which can lead to subsidence or heave. Lanreath is inland and has less coastal flood exposure than nearby Looe, but surface water flooding and river flooding still matter, and our reports include flood risk assessments based on available data. We look closely at walls for cracking patterns that may point to foundation movement and then judge how serious any cracks are.

Roof coverings on many Lanreath properties bring their own set of issues. Traditional slate roofs may look attractive, but they can suffer from slipped tiles, worn fixings and mortar decay to ridge tiles. Where it is safe, our surveyors go into roof spaces and inspect rafters, purlins and any sarking or underlay. We also check flashings around chimneys and roof windows, which are common causes of penetrating damp in older homes. If there is little or no loft insulation, we note that too as an energy efficiency issue that may affect running costs later on.

• Rising and penetrating damp
• Timber rot and woodworm
• Structural movement and subsidence
• Roof deterioration and slate damage
• Outdated electrical systems
• Inadequate insulation
• Solid wall thermal performance