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A Development Contribution is a one-off charge placed on a development by an Internal Drainage Board (IDB). The Development Contribution, net of its collection cost, is intended to reflect and contribute towards the actual or potential cost of work required to be undertaken by the IDB at some stage to manage the additional run-off resulting from the discharge of surface water from new impermeable areas into the Board's District. The works described above can include maintenance activities, the operation of structures or the physical improvements of the Board’s drainage/flood risk management infrastructure. It can also include the surveying, monitoring and modelling of infrastructure capacity. It should be noted that the Development Contribution does not involve any profit-making for the relevant IDB. Indeed, the likelihood is that the sums paid amount to no more than a part-contribution to eventual works undertaken.
September 22, 2025
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