Floor Area Ratio Calculate Floor Area Ratio

Hello forum,

is my calculation regarding the floor space index (0.4) correct?

Plot area: 417m²x0.4=166.8m²
Garages: 40m²
Driveways: 30m²
Yard: 25m²
Total: 261.8m² results in a floor space index of 0.626, so less than 0.8

Thanks and regards

Plot area: 417m²x0.4=166.8m²

Correct!

Total: 261.8m²

Wrong. Because 40m²+30m²+25m²=95m²

261.8m² results in 0.626 floor area ratio

Wrong. Because 261.8/417=0.628

0.626 floor area ratio therefore less than 0.8

Correct! But what good does that do you if the maximum floor area ratio is 0.4?

Jokes aside. Please upload a site plan of the construction project, complete your details (e.g. gross floor area of the house), explain what the courtyard is, and let us find the complete development plan (Important: Year of public disclosure, textual stipulations on the subject of floor area ratio/floor space index).