Yes, you are mistaken. Make a new plan, you will exceed the floor area ratio. It is about the built-up area, in your case that is already 140 sqm for the house and garage. You are allowed to build a maximum of 176.4 sqm. Your house alone has a built-up area of 120 sqm. Our plot is also 440 sqm, also floor area ratio 0.4, and we try not to exceed the 90 sqm built-up area.
By the way, if I interpret your plan correctly, the location of the garage is fixed, right?
Hello Robson,
as a suggestion, please take a look at your state building code to see if there are any exceptions. We have floor and plot ratios of 0.4 and the plot is only 425 sqm. Our house has a built-up area of 135 sqm, plus the garage 44 sqm, the living area amounts to 200 sqm. In total, we have built 252 sqm, which also includes the driveway and terrace.
This is possible because in Lower Saxony the plot ratio can be exceeded by "50 out of 100" due to subordinate building parts. In other words, taking into account the garage, driveway, and terrace, the plot ratio can then be 0.6.
I don't know how it is in Hesse.