[erispoe]

You have a right to your private property. That right does not extend to publicly owned land or land owned by other private parties. When you buy land in the heart of a large metropolitan area in an under-developed neighborhood, it's reasonable to expect that the city will densify and grow around you. Thinking that nothing will change is the unreasonable expectation here. San Francisco has been continuously changing for 150 years, expecting the city to freeze for you as soon ay you buy a piece of property does not make sense.