RICS Level 2 Survey in BA1

BA1 properties are predominantly solid-walled construction using Bath stone - oolitic limestone quarried locally since the Roman period. Unlike modern cavity-wall buildings, solid stone walls manage moisture by allowing it to pass through the structure and evaporate. This breathable system works well when the original lime mortar and lime plaster are maintained, but fails silently when 20th-century cement repointing is applied. Cement traps moisture inside the wall rather than letting it escape, leading to spalling stone faces, salt efflorescence on internal plaster, and eventually structural decay.

Our surveyors assess the external pointing condition on all elevations, note where cement repointing has been used on what were originally lime-pointed joints, and flag the remediation implications in the report. For properties within conservation areas - Bath and North East Somerset has 35 of them - removing cement repointing and restoring like-for-like lime requires listed building consent and specialist contractors. Our report flags this as a condition rating 2 or 3 item depending on the extent of the problem, giving you a negotiation basis or a realistic repair budget before exchange.

Timber sash windows are almost universal in BA1's Georgian terraces. Box frames accumulate moisture at the base of the outer sash, causing rot that spreads into the structural lintel if left unaddressed. Our inspectors probe accessible timber elements with a moisture meter and note where paint bridging has sealed joints, trapping condensation inside. Replacement sash windows in a conservation area must match the original profile, which adds to the cost compared with a non-listed property.

• Solid Bath stone walls assessed for cement repointing and moisture penetration
• Timber sash window frames probed for rot and moisture at base rails
• Parapet gutters inspected for blockage and saturation of the wall behind
• Internal lime plaster checked for detachment, salt staining and damp patches
• Basement areas assessed for water ingress and waterproofing condition
• Chimney stacks inspected from ground using binoculars for pointing and flashings

Bath sits on the River Avon, and significant stretches of BA1 carry fluvial flood risk that the Land Registry title search will not flag. The Environment Agency has issued flood warning areas for specific streets in Bath including Grosvenor Bridge Road, Henrietta Gardens, Pulteney Road, and the Brassmill Lane area near Locksbrook. If the property you are buying falls within 200 metres of the Avon or its tributaries, our surveyors note this in the report and recommend a full flood risk assessment before exchange.

Subsidence risk in BA1 comes from two sources. First, the local geology includes shrink-swell clay units - Mercia Mudstone, Oxford Clay and Fuller's Earth are all present in the Bath area - which expand and contract with seasonal moisture changes. Second, Bath has a long history of underground mining for Bath Stone, coal and Fuller's Earth. Former mining voids at shallow depths can induce gradual subsidence. Our inspectors record all visible cracking patterns using BRE crack classification methodology, noting the crack width, direction and whether the pattern is consistent with settlement, subsidence or thermal movement.

Diagonal cracking running from the corners of window openings is the most common structural finding in BA1 terraces and indicates differential settlement in the foundations. In most cases this is historic and stable, but our report distinguishes between live and dormant movement based on crack width, fill evidence and contextual inspection. Where movement appears active, we recommend a structural engineer's opinion before proceeding.

• River Avon flood warning zone properties identified and flagged
• Crack patterns assessed using BRE classification for width and direction
• Shrink-swell clay geology noted for affected areas with drain-down risk
• Mining legacy areas assessed for subsidence indicators
• Foundation depth context provided for pre-1919 solid wall construction
• Structural engineer referrals recommended where active movement is identified

Our HomeBuyer Report inspects the property as accessible on the day of survey, without moving furniture or lifting fitted carpets. The inspection follows the RICS Home Survey Standard and covers the following elements for every BA1 property:

• Roof coverings: condition of slates or tiles, ridge, verge, eaves, and parapets
• Chimney stacks: pointing, flashings, chimney pot condition and stability
• External walls: pointing condition, signs of damp penetration, cracks and bulging
• Windows and external doors: frame condition, glazing, draughts and security
• Rainwater goods: gutters, downpipes and their drainage outlets
• External grounds: paths, steps, retaining walls and boundary structures
• Roof space: where accessible, checked for structure, insulation and signs of water ingress
• Ceilings and walls internally: cracks, damp staining, mould and plasterwork condition
• Floors: level, springiness, squeaking and signs of damp beneath suspended timber floors
• Fireplaces and chimney breasts: structural condition and removal evidence
• Built-in fittings: kitchens and bathroom sanitaryware noted in condition
• Services: commentary on visible condition of electrics, plumbing and heating
• Damp: damp meter readings recorded across external walls throughout

The report concludes with an overall summary, a list of urgent items requiring attention before exchange, and a recommendation on whether the property is suitable for a standard mortgage or requires specialist conditions. For BA1 properties with basement areas, we assess the waterproofing approach and note any historic flood marks or efflorescence that points to past water ingress events.