A 1,920-square-foot house is near Center City and is on a major traffic artery. Nearby single-family properties have been rezoned for office use and the trend is in that direction. The site measures 100 x 200 feet. Its value is $4.50 per square foot for office use and $30,000 for residential use. The property as improved has a value of $65 per square foot of living area, including land and building.
What is the value of the site as though vacant and available for development to its highest and best use?