Revenue and taxation; income tax credit; eligible energy efficient residential properties; effective date.

HB 1580 creates tax credits for Oklahoma builders of new, energy-efficient homes. Builders of homes meeting EPA's Energy Star program qualify for a $2,000 credit per property, while those meeting DOE's Zero Energy Ready Homes program qualify for a $4,000 credit. Credits can be claimed once per property in the year completed, carried over for up to four years if unused, and transferred to new property owners. The bill applies to homes completed on or after January 1, 2026, and affects builders constructing qualifying new residential properties in Oklahoma.