extend_my_house

Ours is green mineral felt and theirs seems to be normal black felt. The is a height difference of about 800mm between the 2 extensions - their is higher - so I would like the extension into the "void" to be the same height as theirs and then step-down to ours.

Fairly well and I believe they would be agreeable based on conversations we have had in the past so long as there was no down-side for them.

We have a 1960's semi-detached house - same design as many up and down the country. Both us and the neighbours have a rear extension, but in a different orientation - leaving a bit of a void space between the 2 extensions - approx 4mx 4m - shown in red on the attached diagram. We would like to extend our kitchen into this space - to the same depth as the neighbours extension and ideally joining on to it (assuming they were in agreement). Is this possible? From a planning POV? If we didn't have the extensions then the 2 houses would be joined anyway. From a practical point of view? Is it posible to join 2 flat roofs together?