Improving housing stability for tenants subject to the residential landlord-tenant act and the manufactured/mobile home landlord-tenant act by limiting rent and fee increases, requiring notice of rent and fee increases, limiting fees and deposits, establishing a landlord resource center and associated services, authorizing tenant lease termination, creating parity between lease types, and providing for attorney general enforcement.

Changed the rule for unauthorized rent/fee increases: tenants must now offer landlords a chance to fix the increase before they can terminate the lease, and they owe full rent for the month they move out instead of just pro-rata rent.

Increased the required notice period for rent increases from 60 days to 90 days for most residential leases.

Added a new rule allowing landlords to charge late fees for rent paid within five days of the due date, provided the lease was signed on or after the bill's effective date.

Changed security deposit limits for manufactured/mobile home lots to allow up to two months' rent if the tenant has pets, up from one month's rent.

Updated the notice form to clarify that 'rent' includes all recurring and periodic charges, and separated the language regarding rent limits from fee limits.

Expanded the exemption for owner-occupied properties to include duplexes, triplexes, and fourplexes where the owner lives in one unit.

Late fee limits were increased and made progressive; fees can now reach 5% of total rent in the third month of delinquency, up from a flat 1.5%.

A new exemption allows landlords of manufactured/mobile home communities recently purchased by eligible organizations to exceed standard rent caps to cover purchase costs.

Landlords may make a one-time 10% rent increase on manufactured home lot rentals when the agreement is first renewed after a transfer under RCW 59.20.073.

The deadline for the social vulnerability assessment was extended from December 1, 2027, to June 30, 2028, and the act's expiration date was moved from July 1, 2028, to July 1, 2029.

New language was added to several sections to condition the creation of the landlord resource center, model lease provisions, and the social vulnerability assessment on the availability of appropriated funds.

The bill was transferred from the Housing committee to the Appropriations committee, suggesting a change in primary legislative oversight regarding funding.

The deadline for the Attorney General to publish the first version of model lease provisions was extended from January 1, 2025, to January 1, 2026.

The bill number was changed from H-0385.4 to H-0707.1, and the bill type was updated to 'Substitute House Bill' with a revised list of sponsors.

The procedural history was updated to reflect the bill was referred to the House Housing committee and read for the first time on January 23, 2025.