Do I need planning permission?

[Russinating]

I'm a little bit stuck here with whether I need to apply for planning permission or if it falls under permitted development.

Effectively we're planning a single storey side return extension. It'll be 4000x1680mm and will fill in what is currently an empty space and bring the rear of that side of the house in-line with the kitchen which is two storey.

My question relates to this point: "Single-storey rear extension must not extend beyond the rear wall of the original house* by more than three metres if an attached house"

Their definition of original house doesn't help, so is original house from the adjoining wall (ie 4 metres) or based on the existing furthermost rear wall (ie 0 metres)?

 

[Quartz]

Ask your local council.

 

[Russinating]

Yeah I was going to give them a call but can't until later so thought I'd see if it was clear cut beforehand.

 

[iraiguana]

The wording sounds very much to be from the rear most wall of your house (0 meters) and the rule applies to any and all houses that are attached to another house. However, get this checked out first with the council to avoid any pain.

 

[the_r_sole]

has the house been previously extended to the side (i.e. in front of the bit you are filling in?)

 

[Hank_Marvin]

it's the rear wall of the house when it was built, the "original property".

You can go past 3m up until May 2016 with neighbour approval, 6m for an attached property, 8m for detached.

Side extensions can not be more than half of the original property width to comply with PD

 

[Millwall.FC]

Im pretty sure the Original house is anything built before 1948

 

[Hank_Marvin]

Yep

 

[Morpho]

Do you have a sketch of a floor plan? A house can have multiple rear and side elevations.

The technical guidance here may help.

 

[blueboy2001]

Page 16 of the technical guidance document above illustrates your issue quite nicely. That's Government guidance so should be followed by all local authorities, and if it isn't you'll almost certainly get awarded your costs back should you appeal any enforcement notice.

Essentially you can got 4M out from the rear wall following the existing profile if it's stepped. You can't go out 4M from the farthest point and square it off.

You also can't go beyond the existing side wall with the rear extension rules, or beyond the original rear elevation with the side rules, so you can't do wraparound extensions PD because the corner is not PD (see page 25 and 26).