RICS Level 3 Building Survey Isle of Gigha (PA77)

Properties on the Isle of Gigha face specific challenges that make a RICS Level 3 Survey particularly valuable. The island's coastal location means properties are exposed to harsh weather conditions, salt-laden air, and potential coastal flooding. Many traditional stone buildings on the island have solid wall construction rather than modern cavity walls, which can be more susceptible to damp penetration and require specific remediation approaches. The exposure to Atlantic storms during winter months can cause progressive damage to roofing and external joinery that accumulates over years.

The local geology consists primarily of metamorphic rocks, including schists and gneisses from the Dalradian Supergroup. While this means the risk of clay shrink-swell related subsidence is very low, properties can still experience localized subsidence due to poor ground conditions or drainage issues. A thorough survey will identify any signs of movement or settlement that could indicate underlying problems. Our inspectors are familiar with the geological conditions across the island and understand how these interact with different foundation types.

Common defects found in PA77 properties include damp penetration (both rising and penetrating damp), timber decay including rot and woodworm, salt erosion on external masonry due to coastal exposure, and roofing issues such as slate damage and defective leadwork. Properties built before 1900 using traditional methods may also have outdated electrical and plumbing systems that require careful assessment. Given the limited availability of local contractors, identifying these issues before purchase allows you to budget for repairs that may require bringing tradespeople over from the mainland.

• Damp and moisture penetration
• Timber decay and rot
• Roof defects and slate damage
• Coastal salt erosion
• Outdated services and electrics
• Structural movement or settlement

The housing stock on the Isle of Gigha reflects its rural island location and the materials readily available locally. Traditional properties are predominantly constructed from local stone, typically granite or schist, with solid walls that may be rendered (harled) with lime-based mortar. These traditional construction methods provide character but also present specific challenges that our surveyors know to look for. The use of lime mortar rather than modern cement can result in different deterioration patterns, and understanding these is crucial for accurate assessment.

Roofing on traditional properties typically features slate, often sourced from Ballachulish or other Scottish quarries. Some properties may have more recent concrete tile roofs, particularly those rebuilt or renovated in the post-war period. The condition of slate roofs on Gigha can deteriorate more rapidly than on the mainland due to exposure to salt spray, and our inspectors pay particular attention to verge pointing, ridge tiles, and flashings. Leadwork on valleys and abutments is another common area of concern that we examine carefully during every survey.

More modern properties on the island, built since the 1970s, typically feature cavity wall construction with concrete blockwork and rendered external finishes. These properties may appear more conventional but can still have defects related to thermal performance and moisture penetration. Our surveyors approach each property as unique, regardless of its construction period, and tailor our inspection to identify issues specific to that building type and its location within the PA77 postcode area.

Living on an island means accepting that coastal conditions will affect your property. The Isle of Gigha is exposed to Atlantic weather systems, and properties close to the shoreline experience the full impact of wind, rain, and salt spray. Our inspectors assess properties with these environmental factors in mind, looking for signs of coastal erosion, wind-driven rain penetration, and salt crystallization that can accelerate masonry deterioration. Properties within 500 metres of the high water mark require particularly careful inspection.

Flood risk on the island comes primarily from coastal sources rather than rivers, as there are no significant watercourses on Gigha. Storm surges and high tides can cause coastal flooding in low-lying areas, particularly around the harbour at Ardminish. Surface water flooding can also occur in areas with poor drainage after heavy rainfall. Our surveyors note any evidence of previous flooding and assess the drainage characteristics of each property, providing you with a clear picture of potential flood risk before you commit to your purchase.

The island's isolation also affects building maintenance and repair considerations. Many tradespeople based on the mainland charge premium rates for travelling to Gigha, and materials must often be transported by ferry. Our survey reports include cost guidance that accounts for these local factors, helping you understand the true cost of any repairs identified during the inspection. This practical approach ensures you are not caught out by unexpected expenses after completing your purchase.

Your RICS Level 3 Building Survey report provides far more than a simple checklist. It includes a detailed condition assessment for each element of the property, from the foundations and substructure through to the roof covering and drainage system. Each defect is assigned a severity rating, helping you understand which issues require urgent attention and which can be addressed over time. The report format follows RICS guidelines, ensuring consistency and clarity.

The report also includes practical advice on maintenance and repair costs, allowing you to budget appropriately for any work the property may need. For properties on the Isle of Gigha, this is particularly valuable given the limited availability of local contractors and the potential costs of transporting materials and labour to the island. Our inspectors factor these local considerations into their assessments, providing realistic cost guidance that reflects actual market conditions in the PA77 area.

For properties showing signs of structural movement, the survey will recommend appropriate specialist investigations. This might include a structural engineer's assessment, invasive timber inspections, or damp testing. The report provides clear guidance on what further action is recommended, giving you the information needed to make an informed decision about your purchase. We can also arrange for any recommended specialist inspections if required, coordinating with qualified structural engineers and other professionals.