|Residents thinking about having an outbuilding in their gardens, are advised to check out the regulations. http://www.legislation.gov.uk/uksi/2015/596/schedule/2/part/1/crossheading/class-e-buildings-etc-incidental-to-the-enjoyment-of-a-dwellinghouse/made
Advice from Havering Council’s planning enforcement team say outbuildings must only be built for purposes that are in keeping with their existing properties, i.e to use as a TV, hobby, gym or summer room.
In many cases, a business or commercial use of an outbuilding will require planning permission.
There are also various height and location restrictions.
To make an enquiry about constructing an outbuilding or to report an unlawful outbuilding to the Council, you can email firstname.lastname@example.org