The Residential Landlord-Tenant Act (RLTA) regulates the creation of residential tenancies and the relationship between landlords and tenants of residential dwelling units.
 
Certain types of living arrangements are exempt from the RLTA, including:

• residence at an institution;
• occupancy under a bona fide earnest money agreement or contract to purchase a dwelling unit where the tenant is the purchaser;
• residence in a hotel, motel, or other transient lodging;
• rental agreements where occupancy is by an owner-condemnee whose property has been condemned by the Department of Transportation for acquisition as state highway property, where such agreement is certified by the attorney general's office;
• rental agreements for the use of any single-family residence that are incidental to leases or rentals entered in connection with a lease of land to be used primarily for agricultural purposes;
• rental agreements providing housing for seasonal agricultural employees while provided in conjunction with such employment;
• rental agreements with the Department of Natural Resources on Washington State public lands; and
• occupancy by an employee of a landlord whose right to occupy is conditioned upon employment in or about the premises.

An exemption is added to the RLTA for living arrangements where the buyer and seller of a dwelling unit enter into a written agreement for the seller to remain in the dwelling unit after closing the sale.