On 21 June 2014 the Van Nelle factory was the last officially declared World Heritage Site in the Netherlands, bringing the number in the Netherlands up to 10.
The overview of archaeological research by contractor makes it clear that their number was limited until the introduction of the Monuments and Historic Buildings Act 1988. From that point on, there was a clear change, with commercial agencies accounting for a growing proportion of archaeological research.
In 2013 the Monuments and Historic Buildings Inspectorates performed 5,860 inspections on listed historic buildings. Most were in the ‘residential’ category (2,326). In this category, the structure of 97.9% of the buildings was in reasonable or good condition, and the standard of maintenance was reasonable or good in 86.3% of cases.
A trend has been identified for historic buildings that have been inspected three times or more. In 70.3% of buildings inspected on multiple occasions the condition of the structure has remained the same, in 21.2% it has improved and in 8.6% it has deteriorated. The structure of ‘road and water infrastructure’ and ‘defence works’ deteriorated less than in the other categories.
A trend has been established for the scores of listed buildings inspected on more than one occasion. In 47.2% of buildings inspected on multiple occasions the standard of maintenance remained the same, in 31.1% it improved and in 21.7% it deteriorated. The standard of maintenance of ‘road and water infrastructure’ and ‘defence works’ deteriorated slightly in relative terms.