This bill is an omnibus amendment package that creates new sections, amends many existing RCWs, reenacts RCW 41.05.065, and repeals a list of specified statutes. Major changes include creating a state energy performance standard for "covered buildings" (using ANSI/ASHRAE/IES 100-2018 as the initial model), imposing new reporting and compliance procedures and schedules for building owners (tiered by building size), directing the creation of a state database of covered buildings, establishing conditional compliance rules based on investment-grade audits and life‑cycle cost analyses, and authorizing administrative penalties for noncompliance (up to $5,000 plus a continuing-violation amount calculated per square foot), with collected penalties deposited into the low-income weatherization and structural rehabilitation assistance account. The bill requires the department to adopt rules, notify owners, provide support programs, and accept extension or exemption requests; some definitions and the identity of "the department" are not specified in the provided text. The bill also amends a wide range of other laws and procedures: it changes timing and content requirements for the statewide homeless housing strategic plan and local reporting, adds reporting duties for a council under chapter 28B.77 RCW, authorizes and sets performance rules and dynamic tolling standards for express toll lanes on I-405 and portions of SR 167 (including speed targets and limited initial carpool exemptions), modifies the green transportation capital grant program and biennial project submission deadlines, requires county assessors to share property data, creates procedures for PUD payments in lieu of property tax for broadband infrastructure with an arbitration process, establishes environmental justice reporting and an OFM dashboard process, creates or modifies programs for independent youth housing and foundational community supports with specified reporting timelines, updates safe newborn transfer immunity and procedures, and adds or adjusts numerous other programmatic and rulemaking duties (for example, an autonomous vehicle testing self-certification regime with reporting and public disclosure requirements, an aerospace apprenticeship utilization requirement, and creation/approval procedures for landscape management plans and easements with specified fees and terms). The bill changes procedures and penalties in several areas: it authorizes administrative enforcement and penalties for building energy standard noncompliance, prescribes dynamic tolling performance and reporting requirements for express lanes, establishes specific easement fees and administrative cost recovery and timeframes for processing easement applications, and creates a time‑limited vehicle sales tax exemption for qualifying low‑emission vehicles with price/value and date thresholds that expires August 1, 2028 (and which is conditioned on enactment of another statutory provision in the record). Many sections require rulemaking, interagency coordination, public posting of reports, and specific reporting deadlines to legislative committees or the governor. The provided extracts are incomplete in places: several definitions (for example "covered building," "tier 1 covered building," and the formal identity of multiple referenced agencies), portions of financial hardship exemption criteria, subsection (8) reporting schedule language, and some section text are cut off or missing, so certain implementation details and exact agency assignments cannot be confirmed from the material given.

Large commercial building owners will face new compliance work and potential costs: the state will set an energy performance standard based initially on ANSI/ASHRAE/IES 100‑2018, the agency must build a database from county assessor records and notify owners, and owners of tier 1 buildings must start filing compliance reports on fixed deadlines in 2026–2028 and every five years after; failing to submit accurate documentation can trigger notices, fines (up to $5,000 plus a continuing per‑square‑foot charge), and enforcement, though penalties cannot be passed to tenants who cooperate. The agency must provide outreach, technical assistance, and a conditional‑compliance pathway tied to audited investment plans, and it will report annually through 2031 on impacts and incentives, so owners should expect administrative burdens, possible retrofit costs, options for time‑limited extensions or hardship exemptions, and new enforcement risk if records or reporting are incomplete. The bill also shifts reporting, funding, and program responsibilities across many state and local actors: counties must deliver property data on request and local governments must report homelessness spending; the department and WSDOT are directed to develop tolling performance rules, green‑transportation grant priorities, and projections of credit revenues to help fund decarbonization; PUDs with retail broadband must negotiate annual payments in lieu of tax with counties; the public employees’ benefits board will end the smart health program in 2028; and new or amended programs (independent youth housing, mental health access lines, easement fees, temporary vehicle tax exemptions, instream flow planning, and autonomous vehicle testing reports) create new duties or funding flows for agencies, schools, health providers, and counties. Several excerpts do not name the implementing “department” or omit full definitions and schedules, so some practical details about who exactly will carry out or be subject to these requirements remain unclear.