Property; disclosures; polybutylene pipes; effective date.

HB 1866 requires Oklahoma residential property sellers to provide buyers with either a standard disclaimer or a detailed condition disclosure statement. The disclosure must cover specific items including plumbing systems (explicitly listing polybutylene pipes as a required disclosure), structural elements, environmental hazards, and other known defects. Sellers must complete and sign the form within 180 days of sale, with notices clearly stating the information is not a warranty. This affects all residential property sellers in Oklahoma, effective November 1, 2025. The bill does not change buyer responsibilities but mandates standardized disclosures about property conditions.