HPD adopted rules compelling owners to remediate indoor allergen hazards. The Department of Housing Preservation and Development adopted rules to require owners of multiple dwellings to investigate for and remediate indoor allergen hazards such as mold, cockroaches, mice, and rats. The new rules, which implement Local Law 55 of 2018, establish work practices for pest remediation, standards for tenant notifications, and procedures for submitting certifications of remediation and requesting extensions of time to correct violations.