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Not all work carried out on your home will require planning permission – in fact recent changes to planning permission rules have significantly relaxed the process, making it even easier to carry out your North London loft conversion, garage conversion or other extension.

Permitted Development

If your building work falls within permitted development you will not need planning permission. The basic rules which are currently in place for this are as follows:

  • No more than half the area of land around the original house (as it was built) will be covered by the extension.
  • There will be no extension beyond the principal or side elevation.
  • A rear single or double storey extension will not extend further than 3 metres for an attached house or 4 metres for a detached house. This limit is increased to 6m and 8m respectively if the neighbours have been consulted and are happy.
  • The height cannot be more than 4m.
  • Eaves height of an extension can only be within 2m of the boundary of 3m.
  • Eaves , roof pitch and ridge height cannot be more than existing house.
  • Two storey extensions must be more than 7m away from property boundary.
  • Similar materials to existing house should be used.
  • There can be no verandas, balconies or raised platforms.
  • Side windows at upper level should be obscured glass and the opening 1.7m above floor.
  • Your property should not be listed or built in a conservation area.

Be aware that the North London local authority has the right to adjust these details as they see fit and may have put in place other rules for you to comply with. Always check before starting any work.

As local North London builders, using local architects, M&D are able to advise you on this process.

Planning permission

If your extension falls outside of any of the above conditions, you will need to ask for planning permission. This is a straightforward process which can be carried out in conjunction with one of our architects. They will supply the drawings and the paperwork will be submitted to the council either directly or via their online planning portal.

Your neighbours will be informed and a notice placed outside your home. After a set amount of time and barring any complaints, your build can go ahead. It is always a good idea to get planning permission underway as soon as possible to avoid lengthy delays.

M&D Properties Investment Limited is a company registered in England and Wales. Company Number: 8928614. Site by Tahseen Rostom