Single Room with bathroom in loft with rear Domer

[Mubbashshir]

The plan is to have loft room with rear domer&attached bathroom. However need advise on loft room location with possible location in attached snapshot Rear_view_with_two_Possible_Locations_of_LoftRoom. 

attached pictures gives good idea of loft room location 1 or location 2 from inside and outside along with comments in the snapshots

 

Need advise on the below : 

1. Structural changes such as steel beam in loft floor or in domer to ensure stability. 

2. Advise of how to manage the party wall if we have to slot steel beam in the wall along the neighbours side. 

3. Ensure all the details are discussed with builder with regards to the plan and material type etc which will be used so we don't incur additional cost due to constant changes.

4. Advise of strair location and planning for it.

 

 

Edited March 6 by Mubbashshir