Notwithstanding any provision of this chapter to the contrary, the following minimum front yard landscaped buffer setback areas shall be provided for developments within the HC-2 zoning district in order to mitigate against the appearance of buildings and paved areas from the street and from abutting residential properties. A minimum twenty-five-foot landscaped buffer setback shall be provided along any property line which abuts a residential zoning district or any existing residential use.