The bill (Second Substitute House Bill 2517) amends existing land use and platting laws and adds new sections to chapter 81.112 RCW affecting regional transit authorities (RTAs) and local permitting procedures. It amends RCW 36.70B.170 to clarify that local governments may enter development agreements with property owners or controllers (including cities for property outside their boundaries in annexation or service situations), that such agreements set and vest development standards for their term, and that a development agreement with an RTA may set standards that vary from otherwise applicable development regulations (except ADA compliance) to accommodate the authority’s facilities. Development agreements must reserve the authority to impose new or different regulations when required by a serious threat to public health and safety. The bill adds new sections to chapter 81.112 RCW allowing a regional transit authority to apply for land use, construction, and technical permits before acquiring the real property or before a local land use decision, provided the authority gives proof of notice to the subject property owner at the time of application. An RTA may construct rail fixed guideway system facilities that exceed local height limits and setbacks so long as the authority complies with development regulations to the extent practicable for operation. Local governments may not issue land use, construction, or technical permits to an RTA for development on property the authority does not own unless the authority has the property owner’s written permission. The bill amends RCW 36.70B.070 to require local governments planning under RCW 36.70A.040 to provide a written determination of procedural completeness within 28 calendar days of receiving a project permit application (an application is deemed procedurally complete on the 29th day if no determination is provided), to identify other agencies with possible jurisdiction where known, and to respond within 14 days after supplemental information is submitted. It also amends RCW 58.17.040 to add an exemption from platting/land division requirements for divisions caused by acquisition of part of an existing lot or tract by an RTA acquiring land to build facilities under chapter 81.112 RCW. Section 4 of the act expires January 1, 2028, and Section 5 takes effect January 1, 2028. Some text and the relationship between two separate amendments to RCW 58.17.040, plus the full amendments to RCW 36.70B.070 and any effective/expiration dates referenced in the bill header, are not included in the provided extracts.

If enacted, regional transit authorities would be allowed to submit land use and construction permit applications before they own property and before local land use decisions are final, as long as they notify the property owner when they apply. Local governments must accept those applications and meet faster completeness-review timelines (a written completeness decision in 28 calendar days or the application is deemed procedurally complete on day 29, with 14 days to respond after any additional information is supplied), and a new exemption lets land divisions caused by a transit authority’s acquisition be treated differently under platting rules. The bill also lets regional transit authorities build rail fixed guideway facilities that exceed local height and setback limits when necessary for operation, while requiring them to comply with local rules to the extent practicable, and it bars local governments from issuing permits for development on property the authority does not own unless the property owner gives written permission. Regional transit authorities are most affected: they gain an earlier, more certain path to secure permits before buying land, which can speed projects but may increase upfront application work and require owner notice; they also get more flexibility on height and setback limits, which can reduce the risk of being blocked by local zoning but may raise design or mitigation costs to meet "practicable" compliance. Local governments face tighter deadlines and potential increases in administrative workload and the risk that applications will be deemed complete if they miss deadlines. Property owners will see earlier notice and must give written permission before permits are issued for development on land they still own, and acquisitions by transit authorities may avoid some platting requirements. Some implementation details and the exact timing of when specific provisions take effect or expire are not included in the extracted facts, so the practical rollout timing is unclear.