The Environmental Protection Agency (EPA) notes that any moldy areas less than 10 square feet (about 3 feet by 3 feet) can be remediated by the homeowner. โฆ In most cases, it is better to have a mold remediation contractor do the work than a general contractor. 4014 Fox Valley Dr, Rockville, MD 20853 (301) 717-1454 http://www.mdmoldtesting.comhttps://www.facebook.com/MDMoldTesting/