Definitions of the permitted development wording.

The 'Permitted Development' wording of the latest GPDO legislation 2008 - 2015 uses lots of terms and phrases that can cause confusion toegther with its interpretation.

Here we try and de-mystify what is 'generally' meant by each clause based upon logic, previous experience and common sense. 

That sentence alone means that we are probably out of kilter with the Planners and the DCLG who often live on another planet than the one we know and experience. We may not have it fully correct and it may be challeneged by other parties or experiences. 

However, you may find our opinions useful in coming to your own conclusions.  Please remember that ALWAYS complete and obtain your own Certificate of Lawful development before completing any works on site under Permitted Development.

• Development within the curtilage of a dwelling house
  
  Development within the curtilage of a dwelling house
• CLASS A The enlargement improvement or other alteration of a dwellinghouse
  
  CLASS A - The enlargement improvement or other alteration of a dwellinghouse.
• CLASS B The enlargement of a dwellinghouse consisting of an addition or alteration to its roof.
  
  CLASS B The enlargement of a dwellinghouse consisting of an addition or alteration to its roof.
• CLASS C Any other alteration to the roof of a dwellinghouse
  
  CLASS C Any other alteration to the roof of a dwellinghouse.
• CLASS D The erection or construction of a porch outside any external door of a dwellinghouse
  
  CLASS D The erection or construction of a porch outside any external door of a dwellinghouse.
• CLASS E The provision within the curtilage of the dwellinghouse of an ancillary building or enclosure
  
  CLASS E The provision within the curtilage of the dwellinghouse of an ancillary building or enclosure.
• CLASS F Development consisting of a hard surface
  
  CLASS F Development consisting of a hard surface.
• CLASS G The installation alteration or replacement of a chimney flue or soil and vent pipe on a dwellinghouse
  
  CLASS G The installation alteration or replacement of a chimney flue or soil and vent pipe on a dwellinghouse.
• CLASS H The installation alteration or replacement of a microwave antenna
  
  CLASS H The installation, alteration or replacement of a microwave antenna on a dwellinghouse or within the curtilage of a dwellinghouse.
• Definition of permitted development terms
  
  Definitions of permitted development terms.

For an enhanced and detailed explanation / interpretation of the various PD Class Groups you may find this link at 3DGuides very useful.  We generally concur with their views on most aspects of PD.