RICS Level 3 Building Survey Illogan

Illogan’s housing stock brings its own set of quirks, which is exactly why a Level 3 Survey is so useful here. A fair number of homes date back to the mining era, built in traditional Cornish stone with lime mortar pointing, and many of them rely on solid walls rather than modern cavity construction. That changes the picture for insulation, damp resistance and structural movement. Our inspectors have plenty of experience with these older buildings, and we know how Cornwall’s climate affects the different construction methods.

Newer homes in Illogan, including Rose Meadow by Persimmon Homes and Tregenna Meadow by Barratt Homes, are also worth a Level 3 Survey. Even recent builds can hide defects, and a proper survey helps spot trouble before it turns into an expensive fix. These new-build properties usually sit in the £239,995 to £340,000+ bracket, so it makes sense to understand their condition before you complete.

The geology matters too. Illogan sits on Devonian slates and sandstones, and some parts have superficial clay deposits that can shrink and swell. That becomes even more relevant where there are large trees nearby, because roots and clay soils can work against each other. Our surveyors look at those ground conditions as part of the Level 3 inspection.

Cornwall also has elevated levels of naturally occurring radon gas, and homes in Illogan may need radon testing or mitigation. Our inspectors can pick up on features that may encourage radon build-up and advise on whether a radon detection survey makes sense for the property.

Several issues turn up again and again in Illogan Level 3 Surveys. Damp is a regular one, especially penetrating damp from Cornwall’s exposed coastal weather and rising damp in older homes with failed or inadequate damp proof courses. Being so close to the coast means constant wind and rain, and render finishes on both traditional stone and modern blockwork can break down over time, letting water in.

Roof defects are another familiar finding. Many older homes in Illogan have natural slate roofs, durable enough, but they still need repair or even re-roofing as time goes by. Slate tiles can crack, slip or turn brittle, and the timber battens beneath them can deteriorate. Our inspectors check roof spaces closely, looking at rafters, purlins and any sign of old or active leakage. Exposed properties can also show wind damage.

Timber problems, including wet rot, dry rot and woodworm infestation, show up often in older Illogan properties, especially where ventilation is poor. Traditional cottages frequently have suspended timber floors, and those can be affected by rising damp and rot. Our inspectors probe timber members to judge their condition and to spot any active rot or insect activity that might weaken the structure.

Overall shrink-swell risk from clay soils is moderate in Illogan, but localised problems can still appear where superficial clay deposits are present, especially close to large trees and their root systems. Our surveyors check foundations and walls for movement that could point to those 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

Any property can benefit from a Level 3 Survey, but some homes in Illogan really call for this level of detail. Pre-1900 properties, including the many Victorian and Edwardian cottages across the area, were built in ways that differ sharply from modern standards. Their solid walls need specialist understanding, and a Level 3 Survey gives the detailed assessment they require.

Listed buildings in Illogan, including churches, farmhouses and former mining structures, should always be surveyed using the Level 3 option. They carry historical significance and often need specialist guidance on maintenance and repairs that a standard survey cannot provide. Restoration costs can be substantial, so knowing the full scope of work before you buy is essential.

Visible structural movement, such as cracking walls or uneven floors, is another clear reason to choose a Level 3 Survey. Some movement may be historic and non-progressive, but only a detailed structural assessment can establish that. Our inspectors study the pattern and nature of cracks, watch for signs of ongoing movement, and advise if a structural engineer should be brought in.

Any Illogan property near former mine workings should have a Level 3 Survey together with a mining report. Historic mining brings a real risk of ground instability, and homes in these locations may need specific foundations or ground remediation that affects value and suitability. Planning applications in mining areas may also call for ground stability reports and mitigation strategies.