By Tyler Goodwin Planning regulations are preventing vacant offices from being turned into vitally-needed homes, writes Tyler Goodwin If I told you global investors were interested in one of the most derided parts of our failing housing market you would think I, or they, were mad. But hear me out. Unless you work in real estate, you probably haven’t heard of permitted development rights (PDR). If you have, you won’t have heard anything good about them. Yet PDR shouldn’t be controversial: it is simply a policy framework that can be used to convert millions of square feet of redundant and vacant…