Where a reservation is required, the front lot line shall be considered to be coincident with the future right-of-way line, with front setbacks and any other necessary lot measurements being measured from the future right-of-way line. Where there is no requirement for a reservation for highway purposes, the front lot line shall be considered to be coincident with the existing right-of-way line. The developer or owner shall contact the Monroe County Department of Public Works, the New York State Department of Transportation or Town records to determine if a future right-of-way line has been established before a building permit will be issued by the Building Inspector.