Houseboats fall outside of planning control unless moored for so long in the same place that they can be regarded as bringing about a material change of use of land. The permanent mooring of a boat for residential purposes where there was not one previously is likely to be a material change of use of land and planning permission would, therefore, generally be required. Similarly, works associated with the mooring of the boat might require planning permission if they amount to operational development. Ultimately, it is for the local planning authority to decide whether planning permission is required.
There are no specific permitted development rights for houseboats. No specific national planning policy guidance has been published in respect of houseboats or riverside development.