What does it mean when a house has been remediated?

When a house has been remediated, it means that a specific problem that affected safety, health, or structural integrity has been professionally identified and corrected to bring the home back to an acceptable condition. Common types include mold remediation where mold growth caused by moisture was removed, contaminated materials were cleaned or replaced, and the moisture source was fixed, asbestos remediation where asbestos-containing materials were safely removed or encapsulated, lead paint remediation where lead hazards were removed or stabilized, and environmental remediation where contaminated soil or water from oil tanks or chemicals was cleaned up. A remediated house should have documentation describing what problem was found, what work was done, what standards were followed, and often clearance testing results showing the hazard has been reduced to safe levels. Remediation is more thorough than a simple repair because it addresses root cause and includes cleanup and verification. Buyers should ask for remediation reports, permits, and warranties to confirm work was done properly.