Side Return Extension 45 degree 25 degree rule question

[Sam odell]

Hi,

 

We are planning a single storey side return in oxford, on a terraced house. We have a single storey extended kitchen already, this only widens it to include the side alley also.

The issue is the neighbours have a kitchen diner beside the boundary. It has 3 windows, all north facing: a skylight on a partially extended kitchen, a regular window in the kitchen part and a side patio door onto the diner. The patio door is closest to the proposed extension, and it is perpendicular to the boundary.

 

I am wondering if the 45 degree or 25 degree rule applies here. My architect says the 25 degree rule applies to the patio door - measured from the sill, which would render the project a no-go due to ceiling height restrictions.

 

I can;t see any regs that agree. Surely as their kitchen has 3 light sources, and the patio door is perpendicular, it is 45 degree at most? And measured from centre of patio door?

 

I attach diagrams. 

 

Please help!

 

thanks

[Sam odell]

Anyone???🤔

[NCXo82ike]

Are you trying to get this done under permitted development? I've not looked again at PD rules: they're online or someone else here will likely know.

 

We just had a pre-application meeting with planning to discuss an extension after a previous refusal based partly on the boundary wall.

This will be a wraparound extension with a wall on the boundary of 10m, on the right of the image.

We quoted precedent from a property on the street who used a 25 degree angle from the breakfast room window facing the extension (above wheelie bin).

The planning team indicated this should be ok for us too (but we're waiting on the report).

They didn't make any reference to the neighbours' French doors from a dining room (middle of image) nor the kitchen patio doors (left of image).

 

 

[DevilDamo]

Each LPA have different rules on angle lines. What does it say in relation to single storey extensions?