Wash. Rev. Code § 35.80A.020
Counties, cities, and towns may sell, lease, or otherwise transfer real property acquired pursuant to this chapter for residential, recreational, commercial, industrial, or other uses or for public use, subject to such covenants, conditions, and restrictions, including covenants running with the land, as the county, city, or town deems to be necessary or desirable to rehabilitate and preserve the dwelling, building, or structure in a habitable condition. The purchasers or lessees and their successors and assigns shall be obligated to comply with such other requirements as the county, city, or town may determine to be in the public interest, including the obligation to begin, within a reasonable time, any improvements on such property required to make the dwelling, building, or structure habitable. Such real property or interest shall be sold, leased, or otherwise transferred, at not less than its fair market value. In determining the fair market value of real property for uses in accordance with this section, a municipality shall take into account and give consideration to, the restrictions upon and the covenants, conditions, and obligations assumed by the purchaser or lessee.
RCW 35.80A.020