RICS Level 3 Building Survey Nevern

Nevern village sits within the Pembrokeshire Coast National Park and is designated as a Conservation Area, meaning a significant proportion of the housing stock consists of historic properties built using traditional methods. Many properties are constructed from local stone with slate roofs, and a high percentage pre-date 1900. These older properties, while full of character, often conceal defects that only a trained eye will spot. A RICS Level 3 Survey is specifically designed to uncover these hidden issues, examining structural elements that a basic valuation would simply ignore.

The local geology around Nevern comprises Ordovician and Silurian sedimentary rocks including shales, sandstones, and limestones. While generally stable, certain soil types in the area can present shrink-swell behaviour that affects foundations over time. Properties near the River Nevern face potential flood risk, particularly in low-lying areas close to the riverbanks, which can cause structural damage and damp issues that require professional assessment. Our surveyors check these environmental factors against current flood data and historical records.

Common defects we frequently identify in Nevern properties include damp penetration in solid stone walls, deterioration of traditional lime mortar pointing, timber rot in roof structures and window frames, and wear to slate roofing. Many older properties also lack modern insulation, meaning heating systems work harder and condensation becomes more problematic. Our surveyors examine all these aspects thoroughly, providing you with a complete picture of the property's condition before you commit to purchase.

• Stone wall construction
• Slate roof deterioration
• Lime mortar degradation
• Timber defect assessment
• Flood risk evaluation
• Foundation condition check

Properties in Nevern exhibit construction characteristics typical of rural Pembrokeshire, with the majority built using traditional solid wall methods. Local stone, often rubble stone or occasionally dressed stone, forms the external walls of most historic properties, typically constructed as double-leaf walls without cavities. This traditional construction method, while durable, relies on the integrity of the pointing and the external fabric to keep weather out. When lime mortar pointing deteriorates, as it frequently does in older properties, water can penetrate and cause internal dampness.

Slate roofing is the predominant roofing material throughout the Nevern area, sourced historically from local quarries. The traditional timber roof structures in these properties consist of either cut roofs with rafters and purlins or older pegged truss designs. These timbers, while generally robust, can be vulnerable to woodworm and rot, particularly where ventilation is poor or there has been historical water ingress. Our surveyors carefully inspect all accessible roof spaces, using moisture meters and visual assessment to identify any timber defects.

Many properties in Nevern feature suspended timber floors, which were standard construction before the mid-20th century. These floors, while characteristic of period properties, can suffer from rot where sub-floor ventilation is inadequate or where there has been a history of dampness. Our inspection includes assessment of these areas where accessible, identifying any concerns that might affect the structural integrity of the floor or the health of the occupants.

Nevern's position near the River Nevern means that flood risk is a consideration for certain properties, particularly those in low-lying positions close to the riverbanks. While the village itself sits slightly inland from the coast, surface water flooding can occur during periods of heavy rainfall, especially where drainage is poor. Properties with a history of flooding may show signs of structural damage, damp contamination, or compromised foundations that require careful assessment.

The broader Nevern community includes some coastal areas that are subject to erosion, though the main village is set inland and faces minimal coastal flood risk. However, properties very close to cliff edges in the wider area may be affected by erosion over time. Our surveyors consider these environmental factors when assessing a property, checking for any signs of past flood damage or erosion-related movement.

While mining subsidence risk is generally low in the Nevern area compared to other parts of Pembrokeshire, our surveyors remain alert to any signs of ground movement that might indicate historical mining activity or geological instability. The Ordovician and Silurian bedrock in the area is generally stable, but we check for any unusual settlement patterns or cracking that might suggest foundation issues.

Our experience surveying properties throughout Nevern and the surrounding Pembrokeshire area has revealed several recurring defect patterns. Damp issues are particularly prevalent in older stone properties, where rising damp, penetrating damp, and condensation can all occur, often due to inadequate ventilation or historic building practices that do not meet modern standards. Solid stone walls were not designed with damp-proof membranes, making proper maintenance of pointing and gutters essential. We frequently find that properties with original solid walls have been inappropriately treated with cement-based renders, which can trap moisture and cause internal dampness.

Timber defects represent another significant concern in Nevern's older housing stock. Woodworm infestation, wet rot, and dry rot can affect roof timbers, floor joists, and window frames, particularly in properties that have not been well-maintained. The traditional suspended timber floors found in older properties are particularly vulnerable to rot and insect attack, especially where ventilation is poor or there has been a history of dampness. Our surveyors use moisture meters to identify areas of elevated moisture that may indicate active rot.

Roofing problems are frequently identified during our surveys, with deterioration of natural slate roofs being common. Individual slate tiles can become cracked or slipped, lead flashing can fail, and gutters and downpipes can become blocked or damaged, leading to water ingress. Given Nevern's relatively high rainfall, roof condition is a critical area of assessment. Structural movement, while often minor in older properties, can sometimes indicate more serious foundation issues or lintel failure that requires immediate attention.

Many properties in Nevern also have outdated electrical wiring, plumbing, and heating systems that do not meet current regulations. Electrical installations may lack proper earthing or use older cable types that are no longer considered safe. Heating systems, particularly solid fuel agas or older boilers, may be inefficient and require replacement. Our survey includes visual assessment of accessible services with recommendations for further investigation by specialists where needed.