RICS Level 3 Survey Bath and North East Somerset

Bath and North East Somerset’s housing stock is quite different from the newer developments found elsewhere in the UK. With 78.2% of households living in houses or bungalows and a substantial share of homes built before 1919, many properties still rely on traditional construction methods that need specialist knowledge to read properly. Our Level 3 Survey goes beyond a basic visual check, looking into structural elements, picking out hidden defects, and judging the condition of key building components that other surveys can miss. We also look at the way solid wall construction behaves compared with modern cavity walls, and we spot problems caused by unsuitable modern repairs.

Local geology brings its own set of challenges, and our inspectors are trained to recognise them. Clay-rich soils, especially the Lias Clays beneath much of the area around Bath and the Dundry Hill slopes, can shrink and swell, particularly near trees and as moisture levels change. There is also historical coal mining in the southern parts around Radstock and Midsomer Norton, together with extensive Bath Stone quarrying beneath Bath itself, especially in Combe Down where stabilisation programmes have been needed, so some properties carry a subsidence risk. Our inspectors look for the signs, from cracking patterns and sticking doors or windows to uneven floor levels, and judge how serious the issue may be.

Flooding is another point we look at closely. The River Avon, River Chew, and tributaries such as Midford Brook, Cam Brook, and Wellow Brook run through populated parts of the district, and homes in Bath, Keynsham, Midsomer Norton, Radstock, and Chew Magna have all seen notable flooding in the past, with the 2012 Chew Magna flooding standing out in particular. Upstream of Keynsham Weir on the River Avon, the watercourse is tidally influenced, so tidal flooding can be a concern, and that risk may rise with sea level rise. We assess flood risk indicators and any flood resistance measures already in place, so you can see the true condition of homes in affected locations.

Bath and North East Somerset’s architecture is shaped strongly by local geology and long-established building practice. The main building material, especially in Bath, is the golden-coloured Bath Stone, a Middle Jurassic oolitic limestone that defines the city’s Georgian architecture from the 18th and 19th centuries. Outside Bath, traditional buildings in places such as the former Wansdyke district often have sandstone or limestone walls, while Brown Pennant Sandstone was used historically in central parts of the district including Farrington Gurney, Clutton, Pensford, and Publow. White Lias limestone rubble stone walls can also be found in villages such as Corston.

Roofing materials vary too. Limestone tiles are common, particularly in the east of the district around Bath villages like Freshford, Hinton Charterhouse, and Wellow. Thatch was once widespread, but now it is rare. Clay tiles, often historically sourced from Bridgwater, became common from the late 18th to late 19th centuries, while Welsh slate spread widely with the arrival of canals and railways. The council encourages traditional natural materials and lime-based mortar for repairs and new work on historic buildings, and our inspectors know how to spot problems caused by inappropriate modern materials such as cementitious mortar on historic lime-pointed walls.

Homes built before 1919 often have solid walls that behave differently from modern cavity wall construction. These older buildings depend on being able to breathe, so modern refurbishments that cut down natural airflow can trigger damp, condensation, and timber decay. Our inspectors understand these building methods and can identify problems caused by unsuitable modern repairs, such as non-breathable paints that trap moisture or solid wall insulation fitted without enough ventilation. On listed buildings, any work affecting the character needs Listed Building Consent, and our survey highlights matters that may affect that process.

Because we survey properties across Bath and North East Somerset, we know the patterns to look for here. Damp and moisture problems often show up in older Bath Stone buildings, which are porous and can absorb water, especially where pointing or rendering has failed. Poor ventilation, often left behind by modern refurbishments that have reduced natural airflow, can make matters worse and lead to condensation and timber decay. Many historic homes also have outdated electrical systems, old heating systems, and potentially hazardous materials such as lead pipes or asbestos-containing materials that need careful assessment. We check these matters systematically and give clear guidance on what they mean.

Period properties often show signs of structural movement, especially Georgian and Victorian buildings that have settled over many decades. Some movement is normal in older homes, but our inspectors can tell when the pattern looks more serious and may point to ongoing subsidence from clay shrink-swell, mining activity, or tree root influence. In places like Combe Down, where Bath Stone was extensively quarried, stability concerns have led to remediation work in the past, and our surveys look for any related problems. We inspect walls for cracking patterns, check floor levels with a spirit level, and test doors and windows for binding that might suggest movement.

Roof defects turn up often in older properties. Traditional clay tiles, sometimes historically sourced from Bridgwater, and Welsh slate coverings can both show age-related deterioration. Missing or slipped tiles, failing ridge pointing, and damaged flashing can all allow water in and cause internal damage. Our inspectors check roofs from inside and outside where accessible, so we can give a proper view of condition. We also look into loft spaces for signs of past leaks, inadequate insulation, and the state of structural timbers, including rafters, purlins, and joists.

In traditionally built homes, unsuitable repairs and alterations are a major concern, even when the building is not protected by heritage legislation. We often find problems caused by modern materials on historic properties, including cement-based renders that trap moisture, non-breathable paints, and blocked original ventilation paths. Left unchecked, these issues can cause serious damage and may be costly to put right. Our survey identifies such problems and points towards suitable remediation using traditional, breathable materials.