Denver , Colorado is home to the riskiest neighbourhood to own a house or flat in the US , according to an environmental assessment by Environmental Data . Environmental hazards present risk for all homeowners throughout the U.S. The South Swansea district in the city 's south scored 100 out of a possible 100 in a gauge of riskiness for housing that took into account environmental factors including air quality and site contamination . ATTOM surveyed 8,642 ZIP codes in the research , which assigned a different risk index to each environmental factor for each neighbourhood it studied .
Denver , Colorado is home to the riskiest neighbourhood to own a house or flat in the US , according to an environmental assessment by Environmental Data . The South Swansea district in the city 's south scored 100 out of a possible 100 in a gauge of riskiness for housing that took into account environmental factors including air quality and site contamination . ATTOM surveyed 8,642 ZIP codes in the research , which assigned a different risk index to each environmental factor for each neighbourhood it studied .