Hippogriff Industries is a company run by Tallis Sharpe and owned by his human thrall.
The headquarters of Hippogriff Industries is in Warrington, MA [a fictional town, so don't look it up].
Hippogriff Industries owns many other properties. Many of them are leased under the umbrella "Hippogriff Group". One such property owned and funded by the many enterprises of the Hippogriff group is Waltham Park and Reserve.