Rear Extension on back of Garage

[Expatman1]

I want to extend our flat roof garage rearwards into the rear garden by approx 3 metres to make a bigger kitchen. The garage has a low ceiling height so the rear extension will be higher than the garage (but less than 4 metres) but still with a flat "warm" roof.
Is this okay under PD even though the height of the extension will be higher than the existing garage flat roof?

 

[freddiemercurystwin]

Probably. You may be able to go even further, its all here: http://www.planningportal.gov.uk/permission/commonprojects/extensions/

How old is your house?

 

[Expatman1]

House was built in 1935. Some extensions in 2009 - 2.8m rear extension to sitting room.

 

[geraldthehamster]

Probably. You may be able to go even further, its all here: http://www.planningportal.gov.uk/permission/commonprojects/extensions/

How old is your house?

How is it PD if the eaves of the extension are higher than the garage roof?

Cheers
Richard

 

[freddiemercurystwin]

Probably

IMO there is too little information provided by the OP to be more precise.

 

[Expatman1]

Probably

IMO there is too little information provided by the OP to be more precise.

To gain the extra ceiling height in the extension I will need to step up the height of the flat roof where the extension joins the garage. The extension will be the same width as garage just with a higher flat roof by approx 250mm. Overall height will still be well below 4metres and probably about 3 metres in total - depending on height of a "warm" roof on a flat roof.

 

[geraldthehamster]

To gain the extra ceiling height in the extension I will need to step up the height of the flat roof where the extension joins the garage. The extension will be the same width as garage just with a higher flat roof by approx 250mm. Overall height will still be well below 4metres and probably about 3 metres in total - depending on height of a "warm" roof on a flat roof.

See here:

http://www.planningportal.gov.uk/uploads/100806_PDforhouseholders_TechnicalGuidance.pdf

Pages 8-10, which might help answer your question.

Cheers
Richard

 

[Expatman1]

So, it looks like it will be okay because the height of the raised flat roof is still well below the eaves of the main structure of the house?

 

[geraldthehamster]

So, it looks like it will be okay because the height of the raised flat roof is still well below the eaves of the main structure of the house?

Depends whether the "eaves of the existing dwellinghouse" (A.1 c) would refer to the eaves of the house proper, or to the eaves of the attached garage that you're building onto. I don't know the answer to that.

Generally this guidance is written to hinder, rather than help.

Cheers
Richard

 

[noseall]

Your proposal sounds like something architects have nightmares over.

Are you saying that you are going to end up with the main dwelling, then the garage, then the new extension with the garage bit annexing the extended bit to the main house, whilst ceilings and roof hight vary throughout?

Or am I way off?