NPPF F4: Assessing flood risk for decision-making

F4: Assessing flood risk for decision-making 1. To inform the assessment of flood risk and, where relevant, appropriate mitigation, a site- specific flood risk assessment should accompany all development proposals in Flood Zones 2, 3a, and 3b as defined in Annex F, table 1. 2. In Flood Zone 1, a site-specific flood risk assessment should inform and accompany all development proposals involving: a. Sites of one hectare or more; b. Land which has been identified by the Environment Agency as having critical drainage problems; and c. Land identified in a strategic flood risk assessment or the Flood Map for Planning55 as being at risk of flooding from any source, whether now or in the future. 3. Site-specific flood risk assessments should be appropriate to the scale, nature, and location of development and should, where relevant, support an assessment of whether a development proposal satisfies the sequential and exception tests set out in policies F5 and F6.