RICS Level 3 Building Survey Illogan

The housing stock in Illogan presents unique challenges that make a Level 3 Survey particularly valuable. The area has a significant proportion of older properties, many dating back to the mining era, with traditional Cornish stone construction and lime mortar pointing. These older properties often have solid walls rather than modern cavity wall construction, which brings different considerations for insulation, damp resistance, and structural integrity. Our inspectors have extensive experience assessing these traditional buildings and understand how Cornwall's climate affects different construction methods.

Newer properties in Illogan, including those from developments like Rose Meadow by Persimmon Homes and Tregenna Meadow by Barratt Homes, also benefit from Level 3 Surveys. Even recently constructed homes can have defects, and a thorough survey identifies issues before they become expensive problems. These new-build properties typically fall in the £239,995 to £340,000+ price range, and understanding their condition is essential before completing your purchase.

The local geology presents another important factor. Illogan sits on Devonian slates and sandstones, with some areas having superficial clay deposits that can cause shrink-swell movement. This is particularly relevant for properties with large trees nearby, where root systems can interact with clay soils. Our surveyors assess all these ground conditions as part of the comprehensive Level 3 inspection.

Additionally, Cornwall is known for elevated levels of naturally occurring radon gas, and properties in Illogan may require radon testing and potential mitigation measures. Our inspectors can identify factors that might contribute to radon accumulation and advise on whether a radon detection survey is recommended for your property.

Our inspectors regularly identify several recurring issues during Level 3 Surveys in Illogan. Damp problems are prevalent, particularly penetrating damp caused by Cornwall's exposed coastal weather and rising damp in older properties with inadequate or failed damp proof courses. The proximity to the coast means properties face relentless wind and rain, and render finishes on both traditional stone and modern blockwork can fail over time, allowing water penetration.

Roofing defects are another common finding. Many older properties in Illogan have natural slate roofs that, while durable, eventually require repair or re-roofing. Slate tiles can become brittle, slip, or crack, and the timber battens holding them can deteriorate. Our inspectors examine roof spaces thoroughly, checking the condition of rafters, purlins, and any signs of past or current leakage. Properties in exposed positions may also show signs of wind damage.

Timber defects, including wet rot, dry rot, and woodworm infestation, appear frequently in older Illogan properties, particularly those with inadequate ventilation. Traditional cottages often have suspended timber floors that can be affected by rising damp and rot. Our inspectors probe timber elements to assess their condition and identify any active rot or insect activity that could compromise structural integrity.

While the overall shrink-swell risk from clay soils is moderate in Illogan, localized issues can arise in areas with superficial clay deposits, particularly near large trees where root systems can cause ground movement. Our surveyors examine foundations and walls for signs of movement that might indicate these ground condition issues.

• Penetrating damp from render failure
• Rising damp in solid wall properties
• Slate roof deterioration
• Wet and dry rot in timber floors
• Structural movement in older properties
• Mining-related ground instability

While any property can benefit from a Level 3 Survey, certain properties in Illogan absolutely require this level of detail. Pre-1900 properties, including the many Victorian and Edwardian cottages scattered throughout the area, have construction methods that differ significantly from modern standards. These solid-walled buildings require specialist understanding, and a Level 3 Survey provides the thorough assessment they need.

Listed buildings in Illogan, which include churches, farmhouses, and former mining structures, should always be surveyed with the Level 3 option. These properties have historical significance and often require specialist advice on maintenance and repairs that a standard survey cannot provide. The cost of restoration work on listed buildings can be substantial, and understanding the full scope of work needed before purchase is essential.

Properties in areas with visible signs of structural movement, such as cracking walls or uneven floors, definitely warrant a Level 3 Survey. While some movement may be historic and non-progressive, only a detailed structural assessment can determine this. Our inspectors examine the pattern and nature of cracks, monitor for signs of ongoing movement, and advise on whether further specialist investigation is needed.

Any property in Illogan located near former mine workings should have a Level 3 Survey combined with a mining report. The potential for ground instability related to historic mining is a critical consideration, and properties in these areas may require specific foundations or ground remediation that affects their value and suitability. Planning applications in mining areas may also require specific ground stability reports and mitigation strategies.