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If you are worried about a potential decrease in your property's value, however, it is imperative to solve problems of mold growth as soon as possible before they worsen. Mold can be incredibly costly to remove, especially if there are large quantities of it or if it is located in an area of a building that is difficult to access, such as within the flooring or walls. http://www.albertawallandceiling.ca/mold-affect-property-values/