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Just like homeowners, business also benifit from not requiring planning permission for certain types of works. This page looks at what works can be undertaken to a commerical property without the need to make a planning application.

Even more so than houses, commerical properties vary in scale to a much larger degree. A small high street butcher, is in planning terms the same "Use Class" as a hypermarket.

Etending or altering an industrial building or warehouse is considered to be permitted development, subject to the following:

  • No development to come within 5m of any boundary 
  • Development must be within an existing unit  (known as the "Curtilage" in planning)
  • No extension or alteration to make building higher than 5m, if within 10m of the boundary. In all other cases any extension or alteration must not be higher than the building being extended or altered* 
  • The extension or alteration must not exceed the gross floor space of the original building by more than 25% or 1,000 square metres, whichever is lesser ("Original" in Planning means as it was in 1947) 
  • Development would reduce space available for parking or turning
  • No development within a listed building
  • Any industrial building extended or altered must relate to the current use of the building, staff uses or for research and development of products or processes
  • Any warehouse extended or altered must relate to the current use of the building or the provision of staff facilities
  • No extended or altered building to provide staff facilities:
    • Between 7pm and 6.30am, for employees other than those present at the premises of the undertaking for the purposes of their employment
    • At all, if a notifiable quantity of hazardous substances* is present

 

With thanks to the Planning Portal.

 

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