Site Waste Management Plans Regulations 2008 require that any person intending to carry out a construction project in England with an estimated cost of greater than £300,000 must prepare a site waste management plan – an ‘SWMP’. This must be updated in accordance with the Regulations, with different requirements depending on whether the cost of the project is greater than £500,000. There is no legal requirement for a project of contract value greater than £300,000 but undertaken over multiple sites (clearly geographically separate) to undertake a SWMP. However a client/contractor may decide that it is in their interests to do so, because a SWMP should help to save costs on materials, disposal costs, and labour.