Counsel Gives Advice on Prefabricated Dwelling Classification and Planning Strategy

Planning

Residential Planning

Samuel Okoronkwo

Facts

The client has occupied a rural site for many years, originally in a mobile home later replaced with a larger prefabricated unit delivered in sections. Insurers eventually withdrew cover, arguing the structure no longer met the definition of a mobile home. Expert reports confirmed it could not be transported without dismantling, and a lawful development certificate was granted recognising it as a prefabricated dwelling. The client then applied for permission to replace the unit with a more substantial prefabricated home, but the local authority refused, citing Green Belt restrictions and questioning whether the existing structure qualified as a “building.”

Issues

The key issue is whether the current dwelling is legally a “building” under planning law. This classification affects insurance, statutory protections, and planning rights. The refusal also raises the question of whether the council’s decision turned on semantics or on broader planning concerns such as height, massing, and Green Belt policy. The client’s aim is to secure permission for a permanent replacement dwelling, ideally larger than the existing unit, but at minimum a like‑for‑like replacement.

Advice and Solution

Counsel confirmed that a dwelling is, in law, a building: its permanence, attachment to the land, and integration with services all support this. However, the refusal is unlikely to rest solely on definition. The more significant obstacles are Green Belt restrictions and the proposed increase in size. Counsel advised reviewing the refusal notice and officer’s report to identify all grounds, and considering a revised application for a single‑storey replacement on the same footprint with improved efficiency to reduce objections. An appeal remains possible, but it must address every reason for refusal, not just the definitional point. Pre‑application discussions with the authority were recommended to explore an acceptable design, supported by evidence of occupation, council tax, and services to reinforce the dwelling’s lawful and permanent status.