Altering roof pitch angle for loft space
Discussion
Hello all...
I'm spit-balling a bit for roof options for a loft conversion. We cannot do a hip-to-gable conversion as it won't get planning, nor can we do it under permitted development as it would be outside of the original footprint of the external walls.
In order to gain even a little more head height under the sloping section, in what will be a shower room (righthand loft window), what's the score with extending the ridge a little and increasing the pitch of the hipped roof by perhaps a few degrees? Other than being careful not to make it look stupid, will planning likely have a problem with this? Is there such a thing as an accepted range of roof angles?
Approved plans say nothing of specific angles, only that we must maintain a hipped roof. The roof is being completely renewed either way. Standard plain concrete tiles.
Interested in any well informed thoughts, thank you.

I'm spit-balling a bit for roof options for a loft conversion. We cannot do a hip-to-gable conversion as it won't get planning, nor can we do it under permitted development as it would be outside of the original footprint of the external walls.
In order to gain even a little more head height under the sloping section, in what will be a shower room (righthand loft window), what's the score with extending the ridge a little and increasing the pitch of the hipped roof by perhaps a few degrees? Other than being careful not to make it look stupid, will planning likely have a problem with this? Is there such a thing as an accepted range of roof angles?
Approved plans say nothing of specific angles, only that we must maintain a hipped roof. The roof is being completely renewed either way. Standard plain concrete tiles.
Interested in any well informed thoughts, thank you.
Planning are usually pretty sensitive to roof pitch, especially where it raises the visible ridge line or the difference is visible when compared with neighbours.
Do it without planning and you may get enforcement, and will have issues when you come to sell. Buyers lawyers are scrutinising planning and changes much more closely than they ever did.
Do it without planning and you may get enforcement, and will have issues when you come to sell. Buyers lawyers are scrutinising planning and changes much more closely than they ever did.
Our architect proposed the below. Larger dormer, basically as Mike scribbled above. Done with permitted development.

The problem is, the window with the '8' on it, is infill extension, being done at the same time, and our architect suggested 'merging' the larger, PD dormer (as standalone PD without the infill extension) with the approved plans in the first image, so we get larger dormer and infill extension, and hipped roof leaning on the dormer.
Builder has raised concerns (not started yet), and now I think I've been lead up the garden path with this 'merging' idea and we're up the proverbial creek having wasted time and money on drawings etc.
Any further help from you in particular, Nick, would be most welcome.
The problem is, the window with the '8' on it, is infill extension, being done at the same time, and our architect suggested 'merging' the larger, PD dormer (as standalone PD without the infill extension) with the approved plans in the first image, so we get larger dormer and infill extension, and hipped roof leaning on the dormer.
Builder has raised concerns (not started yet), and now I think I've been lead up the garden path with this 'merging' idea and we're up the proverbial creek having wasted time and money on drawings etc.
Any further help from you in particular, Nick, would be most welcome.
wolfracesonic said:
Would a gablet/Dutch roof help you out?

There is a dormer near me like the one in the last pic that cuts across the hip, looks a bit odd tbh.
That doesn't keep the fully hipped roof, and is closer to the larger dormer drawing we have. I think we have a planning problem, rather than a technical problem, as I may have been sold some BS. There is a dormer near me like the one in the last pic that cuts across the hip, looks a bit odd tbh.

r44flyer said:
No front dormers allowed.
Shower room is above the current main bathroom so all the drainage etc is all there, and we need the space on the left as the bedroom.
From what I can make out on the position of the dormer’s front wall you should have a void to run all pipes etc to and from the bathroom below so giving you the chance to swap bedroom and shower room around giving the required head height for the shower. Certainly worth investigating and a cheaper conclusion I imagine.Shower room is above the current main bathroom so all the drainage etc is all there, and we need the space on the left as the bedroom.
Still not got this sorted, unfortunately.
However, we now have an email from a council planner that says if we build the hip-to-gable first, using PD rights, then build the first floor infill extension afterwards, maintaining the, albeit smaller, hipped roof to the side, that would be acceptable.
Does the email itself hold any weight on its own?
Should I get a LDC for the loft conversion and then separate planning for the infill?
However, we now have an email from a council planner that says if we build the hip-to-gable first, using PD rights, then build the first floor infill extension afterwards, maintaining the, albeit smaller, hipped roof to the side, that would be acceptable.
Does the email itself hold any weight on its own?
Should I get a LDC for the loft conversion and then separate planning for the infill?
We had to do this with our terraced house in London back in 2002.
No headroom otherwise.
At first the council refused but then we pointed out that we were halfway down a hill so raising the ridge wouldn't really be noticeable, they gave permission.
Probably no help in your case but reading this took me back
Good luck with it.
No headroom otherwise.
At first the council refused but then we pointed out that we were halfway down a hill so raising the ridge wouldn't really be noticeable, they gave permission.
Probably no help in your case but reading this took me back

Good luck with it.
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