Hi my neighbor is building a conservatory at the back of a terraced house(1928). We both have a single bay at the back and share a common tiled slanted roof above our bay. His intention is to remove the bay roof and I think the structure of the bay. The conservatory roof will run above the height of the previous bay roof. He is also building on a boundary wall between our houses. I am wondering if he needs permission for this? He has told me he doesn't need planning permission.

I believe he will have to satisfy the Party wall act to build the extension even if it is replacing what is existing. This will require him to complete a planning application.

Google party wall act and you should get the information fully

Regards

Toby Frost

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Toby Frost Frost Conservatories

I'm fairly sure he will need permission if it is going to effect the shared roof, have they shown you any plans yet?

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Everybody loves a conservatory.

As mrfrost said, your neighbours claim that he doesn't need planning permission seems kind of dubious IMHO, especially since he's using the boundary wall! Definitely something I'd look into!

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Energy Saving Trust ~ BBC Homes ~ Looking at double glazing