RICS Level 3 Building Survey in AB55

The Level 3 Building Survey - formerly known as a Full Structural Survey - is the most thorough inspection we carry out. It goes far beyond a standard homebuyer report, examining the construction, materials and condition of every accessible part of the building. For a property in AB55, this means a detailed investigation of elements that simpler surveys skim over or ignore.

Our inspection covers the following areas in full:

• Roof structure and coverings - slate condition, timber frame integrity, flashings, ridge tiles and valley gutters
• External walls - stone masonry, pointing condition, render and harling, signs of structural movement or cracking
• Internal walls, floors and ceilings - checked for deflection, cracking, dampness and evidence of alteration
• Timber elements - floor joists, lintels, purlins and rafters assessed for rot, woodworm and structural adequacy
• Dampness - rising damp, penetrating damp and condensation investigated using moisture meters and visual inspection
• Windows and doors - condition, draught-proofing, glazing type and any signs of frame decay
• Services overview - heating system, plumbing, electrics and drainage assessed at a general level
• External grounds - boundaries, outbuildings, drainage, paths, drives and any retaining structures

Every element receives a condition rating from 1 (satisfactory, no action needed) to 3 (serious defects requiring urgent repair). We also provide specific repair recommendations, estimated costs where possible, and advice on the likely consequences of leaving problems unaddressed. This lets you make informed decisions about the purchase and plan any necessary work.

Aberdeenshire's building tradition relies heavily on local stone, and properties throughout AB55 reflect this heritage. Granite is the signature material of the region - extremely durable but presenting specific challenges for building surveyors.

Granite walls are typically constructed as solid masonry, often two skins of stone with a rubble core. The stones themselves rarely deteriorate, but the mortar joints between them are the weak point. Lime mortar - used in most pre-1940 buildings - gradually weathers and can allow water to penetrate the wall. We check every accessible elevation for signs of mortar breakdown, water tracking and any movement in the stonework.

Sandstone buildings are also present in the area, particularly in the town centres. Sandstone is softer and more porous than granite, making it vulnerable to weathering, frost damage and salt crystallisation. Surface erosion, spalling (where the face of the stone flakes away) and inappropriate cement repointing are common issues we identify during inspections.

Harling - the traditional Scottish roughcast render - protects many stone walls across AB55. While effective as weather protection, it can conceal problems underneath. Cracking, bulging or hollow areas in harled walls may indicate masonry failure, moisture ingress or even structural movement that is hidden from view. Our surveyors probe these areas carefully to assess what lies beneath.

Roof construction on older properties typically uses natural slate on a timber frame. Slate longevity depends heavily on the quality of the original material and the condition of the fixings. Many older roofs used iron nails that rust over time, causing slates to slip. We assess the overall roof condition, identify areas of concern and estimate remaining lifespan where possible.

Timber plays a structural role in almost every property across AB55, from floor joists and lintels to roof trusses and purlins. In older buildings, timber elements can be among the most vulnerable components, and identifying decay early is one of the primary reasons to commission a Level 3 survey.

Wet rot develops in timber that is exposed to persistent moisture. In AB55 properties, common locations include ground-floor joists near damp walls, window sills and frames, and timber lintels above openings. Wet rot weakens the timber and, if left untreated, can lead to structural failure in load-bearing members.

Dry rot is less common but far more destructive. It can spread through masonry, behind plaster and into areas that are difficult to inspect. The fruiting body and distinctive musty smell are the most recognisable signs, but by the time these appear, the fungus has often already caused extensive damage. Our surveyors check for conditions that favour dry rot - warm, unventilated spaces with a moisture source - and investigate any suspicious areas.

Woodworm (furniture beetle) affects many older properties. While light infestations in non-structural timber are often of limited concern, heavy attack in floor joists or roof timbers can compromise structural integrity. We check for active infestation by looking for fresh flight holes and bore dust, and advise on treatment where needed.

Roof structures in older AB55 homes deserve particular attention. Natural slate on a timber frame is the traditional construction, and the condition of both elements determines the roof's remaining serviceable life. Rusted iron nail fixings, sagging ridges, broken or slipped slates, and deteriorated sarking boards are all issues we regularly encounter and report on in detail.