[shahedz]

i had my loft made comfortable and use it as a bedroom. Had a velux. platserboarded , wooden floored etc a suspended floor , cost about £7k 10 years ago. I was thinking of getting a dormer which means i need to apply for planning permission as i have already had an extension and comply with building regs. Will they require me to rip up the floor etc and fir RSJs ( i think thats what they are) or can i add dormers straight onto what i have which can be a lot cheaper?

[shahedz]

or alternatively, i have 3 sloping roofs on my house, its a 1930s house, it it possible to build up the side of the house (end of terrace) so that it only has 2 sloping sides? would i need planning permission for this?

[MarkP80]

You need to talk to your planning office and get their advice - you will find them helpful, in me experience.

The position of the dorma is important to whether planning is required. If you want it on the front, then it is highly likely you will need it, at the back you might not. I've not seen the end elevation converted into vertical, but have seen large dormers put in, which achieves a similar thing. All depends on how much you want to spend!

For planning permission, they are likely to want you to comply with building regs. You need to talk to them.

Regards,
MarkP

[Barty Crouch]

As MarkP80 has already said go to your local building control officer for full advice.

You may have to bring the whole room upto current building regs (fire doors, 1 hour fire rating on ceilings to rooms below etc).
If you put a dormer in the you will almost certainly have to install RSJ's.

As for building up the side elevation that may not be practicable due to the existing foundations and may not be aesthetically pleasing.

[TJP32]

Structurally it's not a problem making a gable end to an end of terrace as opposed to a hip end that you currently have BUT planning will not allow that unless a) someone else in your street has already set the presidence or b) they allow you to do that under permitted development rules - you would be lucky.

Steels will definitely be needed and so your floor would need to be ripped up and as mentioned before you would need to add fire rated doors, ceilings etc. Get the BCO on your side now and work out what's required.

Good luck