we now have the draft. The architect plans 15 steps, or 14 steps in the roof, with risers of 18.5 | 18.8 | 19.2 and widths of 26.1 cm. The heights to be overcome are 277.5 | 281.5 | 268.5 (all floors are now planned with a clear shell construction height of 263.5) The dimensions are probably okay but at the limit of the safety formula and also quite steep with over 35 degrees. In my opinion, his plan has the possibility to extend the stairs by one step each and then also to widen the treads. I am currently finalizing the draft and will definitely post it today. For us, it looks very coherent. One room is somewhat small (but surely a wall can still be moved a bit) and the entrance area is all very tight. And of course the stairs. I lack the comparison whether this fits or if we will always have the feeling that it is uncomfortable. And regarding all the discussions about tower or not: visually from the outside one may have mixed opinions but, one will have to climb stairs. They really should be easy to use. EDIT: what programs do you work with? I use Sweet Home 3D. I find it not bad for furnishing and presentation. The handling is also quite okay. No stair-building option and an insufficient dimensioning function is now almost unbearable for me. But I even tried a paid version as a demo and that was no better regarding stairs. Dimensioning was better, but the operation not acceptable.