Navi Mumbai is not one authority
A Navi Mumbai address may involve different planning / lease authorities. Confirm the parcel, authority and any CIDCO / NMMC / PMC / special planning conditions before applying a generic FSI assumption.
Road width is only one input
Even where road width affects permissible development rights, setbacks, access, fire, height, parking, reservation, lease and plot geometry still determine whether that potential is consumable.
