Things that will Trash you home's value: landfills and power plants.

When researchers looked at five municipal landfills near residential property in Cleveland, Ohio, they found the stench was enough to drag down property values by 5.5% to 7.3%. Landfills are most hurtful in populated, expensive, residential areas. The effect was basically nonexistent in sparse, rural areas.

Likewise, the University of California at Berkeley found homes within two miles of a power plant drop 3% to 7% in value.