As stated within the NPPF and PPG, developers and local authority planners need to consider flood risk to and from the development as part of planning proposals. To assess and demonstrate that the proposed development will not be at risk of flooding or increase flood risk elsewhere for all flood sources, a site-specific FRA and/or drainage strategy may be required. Development proposals should also aim to reduce local flood risk where possible through the implementation of SuDS and other water management measures. These key principles need to be applied at the strategic level for borough wide planning and at the site level for development proposals and site allocations.
Planning applications are required for development proposals to be considered. The relevant LPA will undertake a period of consultation to review the proposal, referring to internal and external consultees as required. Flood risk to and from the development must be considered as part of the planning proposals. If a site-specific FRA and/or drainage strategy is required, and is either not submitted or is deemed unsatisfactory, the LPA will refuse the application as providing satisfactory documentation is a national policy requirement.
Tables 4-1, 4-2, 4-3 and 4-4 provide requirements and considerations that must be addressed in flood risk and drainage strategy documents to demonstrate that a proposed development is appropriately flood resilient and resistant. Tables 4-1, 4-2, and 4-3 cover planning application and development requirements for Major, Minor and Change of Use developments (including changes to prior approvals), respectively. Table 4-4 provides the requirements for the assessment and management of flood risk from other sources where applicable. FRA Submission and Drainage Strategy Submission Checklists have been developed as part of this SFRA and have been designed to accompany the guidance presented in this section. Further guidance is available via the PPG Site-specific FRA Checklist, the EA’s Standing Advice, and by contacting the relevant LPA or EA where required.
Further developer (Section 4.2), developer management (Section 4.3) and planning policy (Section 4.4) specific guidance regarding flood risk assessment is available in this section. Information regarding the Sequential Test, Exception Test, SuDS, site-specific FRAs and drainage strategies is covered, accompanying the information presented in the tables below.