Requires a conversion condominium notice to be provided to tenants or subtenants in the unit no later than one hundred eighty days before the tenants and any subtenant in possession are required to vacate.

Provides that the notice must expressly state whether there is a county or city relocation assistance program for tenants or subtenants of conversion condominiums in the jurisdiction in which the property is located.

Requires a declarant or dealer to pay relocation assistance in an amount to be determined pursuant to the city or county ordinance to certain tenants and subtenants.

Provides that the amount of relocation assistance may be adjusted annually by the percentage amount of change in the housing component of the consumer price index for all United States cities, as published by the federal bureau of labor statistics.

Provides that a declarant and any dealer may begin specific limited construction, remodeling, or repair activities as described under this act to interior or exterior portions of an occupied building during the one hundred eighty-day notice period only if all tenants and subtenants have either vacated the premises or have provided to the declarant or dealer signed waivers documenting their consent to the specific limited construction, remodeling, or repair activities.

Provides that this act does not apply to any conversion condominiums for which a notice required under RCW 64.34.440(1) has been delivered before the effective date of this act.