One further thing to mention is the cubic volume allowance takes into account other extensions. So if the property has already extended with rear/side extensions that have added 'roof space' (measured from the eaves to the ridge - flat roofs would have technically add nothing) then this will be included in the total cubic volume usage up to that point - even if it doesn't attach to the main roof.

Very informative and very well explained. Thank you.

Really enjoyed your two videos. I’m a property viewing rep so this is really helpful to me to discuss what’s possible with my viewers. Thank you very much.

Great video.

Just to point one thing out that you have missed. The external look has to be in keeping with the original house. I had to do a retrospective planning application because I put grey cladding instead of smooth fibre glass. You can actually submit a permitted development request to your local planning office for a small fee to check what you plan will be covered by PD. I wasn’t aware of this. Plus make sure the builder of the house hasn’t removed PD from the property at the request of the local planning. Something I didn’t know that others should be aware of. Great video though.

I'm a retired architect and just wanted to sound a note of caution concerning loft extensions built under permitted development rights.

A well put together and clear explanation for home owners and professionals alike. We are small design and build company in London and enjoyed your presentation.

We had a 2 year battle with our parish council over reinstating 2 dorrmer windows on our hipped roof end,our house was built originally with a second floor in the loft and the hipped end originally had 2 dormers which were damaged by a tree in 1973 and when the roof was repaired they were deleted,some other major changes to the house were made at the same time. I still don't understand why it took so long,as the planned dormers matched the originals and those on the front and rear roof but we have the dormers now. I wouldn't mind so much but they face sideways from the road into a field and overlook nothing but countryside, the nearest house viewed from those windows is about a mile away! Councils work in an odd and inconsistent manner,I have learnt that nothing is a given until they say so.

Excellent video. Thanks.

Thanks Scott, nice straightforward video. Would it be possible to make one on fireproofing aspects of the escape route from loft conversions, and likely BCO requirements. Also general video on BCO would be good for those with no experience. A getting started video with things like foundation and wall strength checks (how, when, who) would also be of interest. Thanks again.

Useful video. However, the only proper way to establish whether or not you need pp is to submit a Certificate of Lawfulness to your local planning authority, who will give you a written legal determination.

Really love your video, wish i had seen this about 4 months ago. I was doing a project with hip roof and didn’t get into loft cauz of complication of roof shape.

Interesting video if you are thinking of having loft conversion. Thanks.

Very good and useful video, please make more

thanks for posting valuable information

It's about time they scrapped PD. I live in a cul-de-sac and the house at the entrance to the street has done a rear loft extension under PD. They now overlook everyone's gardens and houses within the close. Aside from the lack of privacy the scale and look of the dormer is entirely out of keeping with the style of the other houses. It's as though they have converted the house into an office building.

Great video, thanks.

you mean 50 % of house volume for semi , previous extensions are deducted from your allowance & 70% of total volume for detached

Excellent informative video.

Very informative to a layman like me.Thanks