AZ HB2666

Establishes water and energy improvement districts (WEIDs) allowing local governments to finance energy and water efficiency improvements on private property through contractual assessments repaid by property owners.

Eligible properties include commercial, industrial, and residential properties with five or more dwelling units; financing can cover installation costs, permits, fees, and third-party review costs for qualified improvements.

Requires local governments to adopt resolutions establishing programs, hold public hearings, prepare detailed reports on program terms, and designate district boundaries before implementing assessments.

Mandates property owners obtain mortgage lender consent before participation, undergo financial ability verification, and have improvements reviewed by independent third parties for baseline conditions and completion verification.

Assessments create first-priority liens on property with same enforcement status as property tax liens; local governments may issue bonds secured by assessment payments to finance qualified projects.