The Closer the Property to BCHD, The Lower Its Value

Real estate modeling shows that property with the same characteristics is worth less, the closer it is to BCHD. That's with BCHD being 99% 52-feet tall or less and 300,000 sqft in size. BCHD wants to expand to 110-feet above Beryl St and expand the buildings to 792,000 sqft. How much more will that drive down property values?