At add to what l2 said about location-related things: Our patio villa backs up to a CYV wall and is situated such that no home is truly directly across the street from us - we face another street that Ts into ours. The price differential of the house when it sold new was quite a bit higher than others in the neighborhood that didn't have those features.
I'm not sure some things have as much of an influence in the resale market as they do when a house is sold new. Obviously, items such as golf course lots, corner lots, etc. add great value. But I don't know that some of the more subtle things do when it comes to resale time.
JMHO......
Bill