ETC

Of course they don’t - they’re for different imposed loads which vary for location.

Not acceptable to a BCO.

It’s a current document and physics is still physics irrespective of where you are in the UK.

If you need to comply - you may not need to although universal access is alway best practice - either make it 1:20 to the door or put in a 1:12 ramp with a 900mmx1200 long landing at the top. Edit: if a change of use you will need access.

Yes. Quick phone call to your SE.

https://www.buildingcontrol-ni.com/assets/pdf/TechnicalBookletD2012.pdf

Another quick sketch.

Probably not needed. Drop within 3.0m of a dwelling only.

My attempt.

Hi there, What don’t you like about it? It looks more or less like a straight copy apart from the angled side. Personally I’d get rid of the 80’s patent glazing entrance feature and I think I’d try and hide the garage doors.

Concrete lintels?

No they can’t.

Put the 150 between the rafters - leave a 50mm ventilation gap above and the 40mm below or use insulated plasterboard!

Refer to the SAP for the type and thickness of the insulation - not the construction of the roof FFS!!!! - if your builder built from the SAP he should be given a kick up the hole!

Who on earth builds from a SAP U-Value calculation?

Why?

Go back and check what they need. I presume this is registration for rates. The construction stage you are at will have been flagged up to LPS by BC during the course of their inspections - normally 6 months before the anticipated completion of the works - but I doubt you have to be complete for a certain dates.

Post the plans and the other existing and proposed elevations. The only reason I can see for the request for a flat roof is to distinguish the existing from the proposed - a bit of a shit request really and as for the window why on earth are they getting their knickers in a twist about a single existing window - madness.

It’s internal in a heated space. Why do you want to insulate it?

Feel free to read both my posts properly.

For the hard of thinking see attached.

I would either try and clean the brick again or consider clay tile cladding.

Tell your neighbour to move his soil away from your building and into his own property. I can see a situation where your neighbour extends their garden the 100mm into your property and up against your extension so that over time the extension wall becomes the boundary. Nip this on the bud now.

Dig foundations into virgin ground. Build up sub-floor blockwork to height you want. Fill inside and outside with good clean fill well compacted. Form precast or reinforced sub-floor.