Ideas for improvement

Hello, we have purchased a plot of land - unfortunately it is not possible to build very large due to a strict development plan.

The floor area ratio is 0.15 with a plot size of 926m2.

Basically, 2 floors would be possible!

The architect's design is attached. The left part of the house is the existing basement with a new structure and the connection via settling steps to an extension.

Do you possibly have any ideas on how we could accommodate a guest room of 10-11m2 - without giving up the dressing room ..

We would also like to install a second level in the children's room to create more space - our architect has asked us to gather our thoughts - but somehow I am stuck and would appreciate creative suggestions..

Note: the left part will be demolished except for the basement and rebuilt - due to the height difference (raised basement) the settling steps lead to the ground-level extension..

Thank you

The floor area ratio is 0.1 with a plot size of 926m2

I don't understand. With the extension, you are definitely over 120sqm, allowed would be 92.6. As far as I know, the floor area ratio refers to the gross floor area, including walls. That is really a stupid floor area ratio.

Sorry is 0.15 ...I have changed it in the text an exemption permit has been applied for but who knows - maybe someone here in [hie reich] has a brilliant idea! We want to preserve the basement and develop it into a living space! Therefore, it suits us - however, we could really use a spare/guest room on the ground floor. Wooden frame is the chosen construction method

Sorry is 0.15 ... I have changed it in the text

Ok... phew... and where does the basement lead to? Can't it be expanded? How is the roof? Do you have a section? Would an offset shed roof be possible without the resulting area being unusable as a sleeping area for guests due to lack of height?

The basement is immediately to the right next to the entrance! A lectern should be possible - two-story is allowed .. otherwise no restrictions ... I rather need a room where I can snore in peace