People thinking of adding a conservatory to their property might want to seek planning permission from the local authority before they begin work.
Deputy chief executive officer for the Glass and Glazing Federation Giles Willson said this is “the first issue” homeowners will need to address when building this structure.
The local planning office can provide details of how to gain a permit, before the builder considers decisions such as roofing materials, framing, style, glazing, orientation and overall size, he advised.
Permission “must be obtained prior to installation”, with current British building regulations stating that this must be sought for all constructions with heating, the expert noted.
Mr Willson pointed out that extensions with external-grade doors and windows separating them from the main building, no warming system and that are less than 30 sq m in size are exempt from regulations.
The government considers extensions to be covered yards or ways, porches, conservatories and carports that open on at least two sides.