RICS Level 3 Survey in Mabe

Our RICS Level 3 Survey, often referred to as a full structural survey, gives a thorough look at the construction and condition of a property. Our qualified inspectors assess every accessible part, from walls and floors to ceilings, roofs, and the building’s structural integrity. In Mabe, that matters especially because the parish has a mix of traditional stone buildings and newer construction methods. We inspect the fabric of the property methodically, noting each defect we find and judging how serious it is.

This survey picks out defects such as dampness, timber decay, structural movement, and roofing problems, all of which turn up regularly in local homes. We grade each issue by severity, from urgent matters needing immediate action through to points for future maintenance. The finished report includes clear photographs and diagrams, so you can see exactly what is going on behind the walls of a potential new home. Our inspectors draw on first-hand knowledge of local housing stock to separate cosmetic flaws from real structural concerns.

A Level 3 survey goes well beyond a simpler Level 2, with a detailed look at how the property is built and how that structure is performing. That is particularly important for older homes in Mabe, where traditional granite and killas slate construction differs sharply from modern cavity wall builds. We also set out repair advice, likely costs, and the implications for how you plan to use the property. Where defects are found, we can say whether they are likely to worsen or are long-standing issues that have remained stable for years.

For properties in Mabe, we also assess mining risk, because Cornwall has a long history of extraction activity. We look for evidence of past mining-related movement, check foundation conditions, and can advise whether a formal mining search is sensible once we have seen the site. In an area shaped by geology and history, that level of detail plays a big part in protecting your investment.

• Complete structural inspection
• Detailed defect analysis
• Cost estimates for repairs
• Advice on renovation potential
• Mining risk assessment
• Market valuation inclusion

Mabe properties bring their own set of challenges, which is exactly why a Level 3 Survey is so useful here. The parish sits on Devonian slates and sandstones, and historic mining activity in surrounding areas means some risks are not obvious to the untrained eye. Our inspectors know the local ground conditions and adjust their approach accordingly. In Mabe, the Gramscatho Group geology can lead to variable ground conditions, especially where superficial deposits of Head clay are present.

Much of Mabe’s housing stock is built from local granite and killas slate using older methods that differ a great deal from modern construction. The properties dating from before 1919, which make up around 20-25% of the housing stock, often have solid walls, shallow foundations, and lime mortar pointing that need specialist assessment. A Level 3 Survey gives those features the attention they need. Our team also understands how traditional lime mortar behaves differently from modern cement render, and can spot where repointing or repairs may be needed.

There is also a sizeable post-war stock, making up 30-35% of Mabe’s homes, and that brings a different set of issues. Properties built between 1945 and 1980 usually have cavity wall construction, rendered blockwork, and concrete tile roofs. They are generally sound, but defects do crop up, including render cracking, deteriorating concrete tiles, and damp penetration where render has failed. Our surveyors know what to look for across each construction era represented in Mabe.

The wide age range of homes in Mabe means our surveyors come across a familiar set of defects again and again. Dampness is one of the most common, especially in older stone properties where solid walls have no cavity insulation and traditional lime mortar has broken down over time. Homes near the village centre, and those with poor ventilation, are particularly prone to rising and penetrating damp that can affect both the structure and day-to-day living conditions. Our inspectors use moisture meters and thermal imaging to pick up damp areas that buyers may miss at viewings.

Older housing in Mabe also throws up timber problems, including woodworm infestation and both wet and dry rot. Cornwall’s damp climate, combined with period homes that still retain original timber frames, creates the right conditions for these defects to develop. Our inspectors check all visible timber in floors, roofs, and internal joinery, looking for active infestation and measuring how far any damage has already gone. We can say whether treatment is needed and whether the issue is historic or still active.

Roof defects are a regular feature of our survey findings across the parish. Many of the older homes still have their original natural slate roofs, which are attractive but need regular maintenance as individual slates age and become brittle. The Carnmenellis granite intrusions to the north-west of Mabe influenced local building stone quality, and the same kind of variation is seen in roofing materials. More recent homes from the post-war expansion often have concrete tile roofs that suffer from deterioration, cracked tiles, and failed fixings. Our surveyors assess roof coverings, flashings, chimneys, and rainwater goods in full.

Surface water flooding is a local issue in some parts of Mabe, especially in lower-lying spots and near smaller watercourses. The parish as a whole has a low risk of river and coastal flooding because of its inland elevated position, but homes in identified surface water flood zones may have a history of flooding that affected walls, floors, and electrical installations. The Level 3 Survey looks at these areas closely and sets out the right recommendations. We also note signs of past water damage, high water marks, or dehumidifier use that may suggest flooding has happened before.

• Rising and penetrating damp
• Woodworm and timber rot
• Slate and tile roof deterioration
• Render and external wall cracks
• Defective drainage systems
• Surface water flooding
• Mining subsidence risk
• Clay shrink-swell movement

Getting Mabe’s building history right is central to a proper assessment. The oldest homes in the parish, those built before 1919, were made using traditional Cornish methods with solid stone walls of local granite or killas slate. Lime mortar was commonly used, which lets the building breathe but can deteriorate if it has been repointed with cement. The foundations on these buildings were often shallow strip footings, making them more vulnerable to ground movement, especially where trees stand close to the property.

Homes built between 1919 and 1980 brought cavity wall construction to Mabe, with external walls of rendered blockwork or brick and a cavity designed to resist moisture. Many of these mid-century properties have concrete floors at ground level and timber joists to upper floors. Roof construction also moved from traditional timber rafters to modern truss systems, and coverings shifted from natural slate to concrete tiles. Our inspectors understand how each of these methods performs over time and can identify the defects tied to each era.

Newer homes in Mabe, including those at Trevithick Manor and Rose Meadow in Mabe Burnthouse, are built to current regulations with cavity wall insulation, integrated damp-proof courses, and modern roofing systems. Although these properties tend to have fewer hidden defects, they still need a proper inspection. We check for construction faults, poor workmanship, and problems with modern materials that have not performed as expected. Even a new build can hide serious issues that only an experienced surveyor will pick up.