How many rooms do you need
4 BR
1 Living Room
1 Dining
1 Kitchen
1 Bath
1 Mech/Laundry Room
I am seeing 8 room (the mechroom and bathroom is just a 12ft room cut in two both at 6ft).
The dining room is optional and maybe just 2 bedroom are needed So really only 4 rooms and two half rooms (bathroom/mechroom) for a total of 5.
I like to think of each room as 12ft by 12ft boxes.
You could just have all the rooms layed out linearly all
side by side with a 3ft hallway infront of all the rooms connecting them, so the structure could be 75ft by 15ft.
Maybe 75 by 16 if you factoring wall thickness
Iterations are fine, we don't have to be perfect
My 2nd Location:Florida HardinessZone:10 AHS:10 GDD:8500 Rainfall:2in/mth winter, 8in/mth summer, Soil:Sand pH8 Flat