Horton added: ‘Updates include new rates for insulation and other modern components, helping the datasets stay aligned with today’s construction methods and emerging material choices.’

BCIS databases are created on a national average ‘best trade price’ basis and estimates can be rebased to suit project location, date and contract value. Custom percentages can also be applied for preliminaries, overheads and profit levels.

The Alterations & Refurbishment dataset is intended for use on projects consisting entirely or substantially of alterations and improvements to existing buildings from simply taking out a door and blocking up the opening, to projects up to £300,000 in value. It is available to subscribers of BCIS OpX.

In the Major Works dataset, the prices are based on a building of two or three storeys of the Administrative or Recreational type, such as offices, libraries, community centres and sports halls, architect-designed and supervised with a tender price of up to approximately £4 million, providing reasonable quantities of work in all trades.

In the Minor Works dataset, the prices are based on a contract of extensions and alterations to an existing building, two or three storeys high, with a tender price of about £1,250,000, requiring relatively small quantities of materials and labour.

The Major Works and Minor Works datasets are available to subscribers of BCIS CapX.