RICS Level 3 Building Survey Somerset

Somerset’s housing stock is varied, and that variety brings its own problems for buyers. The county stretches from late medieval cruck-framed barns to contemporary new builds, with each period using different methods and showing different defects. Traditional homes often include local materials such as Ham stone from the quarries near Stoke-sub-Hamdon, Blue Lias limestone from the central areas around Somerton and Keinton Mandeville, or the distinctive Chert rubble seen near Chard and across the Blackdown Hills. Knowing those building traditions matters, because issues can sit hidden from an untrained eye. Even properties only a few miles apart may have completely different construction characteristics, thanks to Somerset’s geology.

In many rural parts of Somerset and in the villages, original features still survive and they need specialist assessment. Jointed cruck trusses are a good example, a traditional Somerset construction method that surveyors have to understand when judging structural integrity, with timber frames found in buildings dating from the late medieval period onwards. Thatch is rarer now, but it remains on some homes, and it brings its own maintenance and insurance points that our surveyors can assess properly. Across the county, conservation areas, including many in Bath’s UNESCO World Heritage City, can place restrictions on alterations, which affects both the building’s present condition and future maintenance plans.

Somerset’s housing market recorded approximately 12,700 property sales in the year to December 2025, and that was a 12.6% fall on the previous period. Most sales sat in the £300,000 to £400,000 bracket, which accounted for 21.7% of all transactions. With so much money on the table, especially for detached properties averaging £451,000, a RICS Level 3 Survey gives important protection. It shows the true condition before you commit, and if major defects turn up it can strengthen your hand in negotiations. New build properties in Somerset averaged £396,000, a 7% rise over the twelve months to December 2025.

Across Somerset, our surveyors keep an eye on environmental pressures that can affect property condition. Low-lying land near the River Parrett and the Somerset Levels brings flood risk, while clay soils in some areas can move as they shrink and swell. Coastal homes around Burnham-on-Sea face extra exposure too, including erosion and salt damage to building materials. Because we know the county well, we can point to the locations most at risk and inspect affected properties with real care.

• Traditional stone-walled properties
• Period cottages with thatched roofs
• Victorian and Edwardian terraces
• Modern new-build homes
• Listed buildings in conservation areas

Somerset’s geology has shaped the way people have built here for generations. In the south, around Chard and the Blackdown Hills, Chert rubble walls are common, while Bath is known for the honey-coloured look created by Bath stone. Ham stone, quarried near Ham Hill and Stoke-sub-Hamdon, has been used widely for walls as well as door and window dressings and quoins. You see it across the Yeovil and Ilminster areas, where its warm yellow colouring is part of the local vernacular.

The railway changed Somerset’s building materials quite sharply, with brick becoming more common from the late 19th century onwards and often displacing traditional stone in new work. Concrete tiles also gained popularity, giving builders a cheaper alternative to the clay tiles made in Bridgwater. That history helps our surveyors date different parts of a property and spot likely trouble ahead. Homes from the railway era often mix original stone with later brick or concrete replacements, and each material brings its own durability and maintenance issues.

Across the west of Somerset, timber-framed construction is especially common because wood was easier to obtain than stone. Our surveyors pay close attention to the condition of timber, looking for rot, woodworm and past damp damage that could weaken the structure. Jointed cruck trusses, so distinctive in many Somerset buildings, call for specialist assessment, and our team knows how to look for stress or movement in these traditional elements. In clay-soil areas such as parts of the Somerset Levels and around Yeovil, we also check for shrink-swell movement that can affect foundations and timber alike.

Stone type matters, because different stones age in different ways and need different upkeep. Doulting stone, quarried near Doulting, has long been used for doorways and high-quality ashlar work, while Cary stone from near Castle Cary appears in buildings across the eastern part of the county. Otter Sandstone, also called Lydeard Stone, gives many properties around the Vale of Taunton Deane their red, pink and fawn mottled look. Upper Greensand is used for quoins and dressings in the Blackdown Hills and Vale of Taunton Deane areas. Our surveyors recognise these materials and know the issues each one can bring over time.