Using a standard format, samples of some 43,000 buildings of all types spread nationally were surveyed, systematically checked for signs of deterioration and whether they were being beneficially used. This led to the conclusions that approximately 37,000 of the nation’s listed buildings were ‘at risk’ from further deterioration or loss, and 75,000 were vulnerable and required attention to prevent them from becoming at risk.
The survey served to set an example of how to assess the buildings, to draw attention to the issues and to stimulate action. Other local authorities have now completed surveys of their areas.
Each building or structure is assessed against 2 criterions:
- Occupancy – is judged as vacant, partially occupied or fully occupied.
- Condition - is more detailed, based upon four levels.
Very Bad (1)
A building showing structural failure or where this can be soon anticipated. Fairly few buildings are likely to fall into this class, but it covers a wider range of condition. Long term derelict or ruined buildings are included, and buildings which would likely collapse in severe weather. Buildings which are complete, but with serious structural issues, e.g. an unstable gable or severely bowed elevation, where collapse could be imminent are included, as are those with serious weather penetration due to substantial areas of absent roof.
For structures, very bad is likely to indicate the potential complete loss of the item.
Poor (2)
A building in poor condition is clearly deteriorating. Obvious faults which will eventually lead to structural failure, e.g. areas of roof covering absent allowing water penetration and decay of the roof structure, noticeable cracks or bulges to elevations. Also buildings with many maintenance defects fall into this category, missing or badly defective gutters and fall pipes, badly decayed or broken windows and building insecure against unauthorised access.
For structures, missing elements or requiring substantial repair or maintenance will qualify for this class.
Fair (3)
A building or structure which is structurally sound as far as can be ascertained, but which needs fairly minor repairs and indicated lack of maintenance. Would include under maintained joinery or rainwater goods, poor pointing, or evidence of start of failure of the roof.
Buildings in this category can easily progress to either poor or good, and those require monitoring.
Good (4)
A building or structure in sound, weather tight, well –maintained condition, which shows no obvious signs of impending deterioration.
