hip roof loft extension

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Hi

I'm using an internet photo to find out if such an extension on a hip roof is possible.
I would like to avoid doing a hip to gable but still have full height.
Is there a way of cutting part of the hip in order to create this box extension or the roof would fall apart?

I am not a builder or architect so apologies if it's an obvious question.
Thank you
hip.png
 
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It's possible, but whether it's practical with all the structural supports is another matter. Plus access to the loft and to the extension need to be considered

Presumably the extension will be bigger than that?
 
Locally, there are a couple of semis with a hipped roof, which have had a loft extension. The method seems to leave part of the angle of the hip corners in place. They do appear quite odd.
 
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It's possible, but whether it's practical with all the structural supports is another matter. Plus access to the loft and to the extension need to be considered

Presumably the extension will be bigger than that?
Thank you.
There is already a loft extension done, long ago, but just a type of window dormer in the middle of the back aspect of the roof.
The space is used as a bedroom, but there are many areas with reduced height.
I aim to change the window dormer with this larger dormer to gain height including in the corner where the hip is now, and have a small bathroom there, insted of the current cupboard with reduced height that's there now. I would also open up the room on the other side to the front of the house, all the way to the roof and have one/ two veluxes on that side.
The way it is now, they have just put a stud wall about 1.5m from the edge of the roof and there is quite a lot unused space in ths remaining area under the roof.
The staircase already exists, but it is directly under the pitched roof, next to this cupboard, separated by a stud wall.
So if I do a hip to gable it would be very disruptive (and presumably more expensive) as that side of the pithced roof covers the main house. Part of the loft floor was removed to create access for the staircase (again I think they have lost a lot of space by doing the staircase like this but anyway, that's what it is. I don't intend to change the staircase, just work around it)

It seems to me it would be practical to have this corner dormer even if it's a bit odd looking, as long as it is technically possible.
Would I need an architect for this or just a technician?
Thank you
 
Rip out the old conversion and do a proper hip to gable. Anything else is daft
 
Don't underestimate the amount of structural work involved with this type of dormer, compared with a gable conversion.

And be sure that you will actually be able to walk into the dormer section around or between the remaining sloping roof.

This is the work for a structural engineer, but he'll need some architectural design flair.
 

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