Complex sentence: Despite the heritage focus in the few surviving blocks of heritage buildings, none are protected as heritage districts and developers have been able to overturn the hertitage status of buildings in these area such as the 1840 Sweet Basil Building.
Split into simpler sentences: Despite the heritage focus of these remaining blocks of heritage buildings, none are protected as heritage districts. The developer was able to overturn the hertitage status of buildings on the block such as the 1840 Sweet Basil Building.