Brownfields are abandoned, idle, or under-used industrial and commercial properties, often in urban areas, where expansion or redevelopment is hindered or complicated by real or perceived environmental conditions. Many areas across the country that were once used for industrial and commerical purposes have been abandoned or are underused for their location - some are also contaminated. Brownfield problems are not limited to large cities with long histories of heavy industry and large-scale manufacturing activity. Small towns and villages in Michigan also have properties suspected of contamination, or old buildings which have become eyesores in need of demolition. Brownfields present challenges to potential developers, whether contamination is discovered or suspected.