Location, location, location: that is what real estate is all about. Whether it is in the Greenwich real estate market or anywhere in the country, home sale value is greatly influenced by location. Pricing a house is challenging under the best conditions and many factors contribute to that number; but estimating the dollar value lost due to location is extremely tricky. One way to approach this is to check the tax data at town hall. Some homes get a tax adjustment for certain locations: being near a train, town utilities, etc. While this information can be helpful, one should...