snips from local ordinances, below. none of them appear to be specific to the idea i'm proposing.
Termination of Tenancy: A written notice given by a landlord to a tenant requiring the tenant to move listing at least one reason specified in the Just Cause Eviction Ordinance.
Note: If a tenant refuses to move, only a court can force the tenant to leave.
The following is a summary of the reasons for which owners may end tenancies under the ordinance:
1. The tenant fails to pay rent within 14 days of a notice to pay rent or vacate.
2. The tenant habitually fails to pay rent on time, causing the owner to notify the tenant in writing of overdue rent 4 or more times in a 12-month period.
3. The tenant does not comply with material terms of a lease or rental agreement within 10 days of a notice to comply or vacate.
4. The tenant does not comply with a material obligation under the State Landlord-Tenant Act within 10 days of a notice to comply or vacate.
5. The tenant habitually fails to comply with material terms of the lease or rental agreement, which causes the owner to serve a 10-day notice to comply or vacate 3 or more times in a 12-month period.
6. The tenant severely damages the rental unit (causes “waste”), causes a nuisance (including drug-related activity), or maintains an unlawful business, and does not vacate the premises within three days of a notice to do so. The type of damage, nuisance or unlawful business must be specified in writing on the notice.
7. The tenant engages in criminal activity in the building or on the premises or in an area immediately adjacent to the building or premises. The alleged criminal activity must substantially affect the health or safety of other tenants or the owner; illegal drug-related activity is one crime specified by the ordinance. A property owner who uses this reason must clearly state the facts supporting the allegation, and must send a copy of the termination of tenancy notice to SDCI.
8. The owner wishes to occupy the premises personally, or the owner’s immediate family will occupy the unit, and no substantially equivalent unit is vacant and available in the same building and gives the tenant written notice at least 90 days prior to the end of a rental period. Immediate family includes the owner’s spouse or the owner’s
domestic partner, and the parents, grandparents, children, brothers and sisters of the owner, the owner’s spouse or the owner’s domestic partner. If the owner gives this reason to terminate a tenancy and then fails to carry it out, he or she may be subject to a civil penalty of up to $2,500. A tenant whose tenancy is terminated for this reason has a private right of action if he or she feels an owner has failed to comply with these requirements.
9. The owner wishes to terminate the tenancy of a tenant who lives in the same housing unit with the owner; or the owner desires to stop sharing his or her house with a tenant living in an approved accessory dwelling unit (ADU) in an owner-occupied house.
10. The tenant’s occupancy is conditioned upon employment on the property and the employment relationship is terminated.
11. The owner plans major rehabilitation that requires a permit and demonstrates that the work cannot be done with a tenant in occupancy. In addition, the owner must comply with the requirements of the Tenant Relocation Assistance Ordinance. (See below for more information.) If the owner gives major rehabilitation as the reason to terminate a tenancy and then fails to carry it out, he or she may be subject to a civil penalty of up to $2,500. A tenant whose tenancy is terminated for this reason has a
private right of action if he or she feels an owner has failed to comply with these requirements.
12. The owner decides to convert the building to a cooperative or condominium. (See page 6 for information on the Condominium and Cooperative Conversion Ordinances.)
13. The owner decides to demolish a building or to convert it to non-residential use. The owner must first comply with the requirements of the Tenant Relocation Assistance Ordinance (see page 5) and obtain a necessary permit.
14. The owner desires to sell a single family residence and gives the tenant written notice at least 90 days prior to the end of a rental period. The owner must list the
property for sale at a reasonable price in a newspaper or with a realty agency within 30 days after the date the tenant vacates. Property owners may be required to sign a certification of the intent to sell the house if SDCI receives a complaint. There is a rebuttable presumption of an ordinance violation if the unit is not listed or advertised, or is taken off the market or re-rented within 90 days after the tenant leaves. A tenant whose tenancy is terminated for this reason has a private right of action if he or she feels an owner has failed to comply with these requirements.
15. The owner plans to discontinue the use of a housing unit which is not authorized by the Land Use Code, after receiving a Notice of Violation. The owner must pay relocation assistance to the tenants of each such unit at least two weeks prior to the date the tenant is to vacate. Low-income tenants must be paid $2,000 relocation assistance; other tenants must be paid relocation assistance equal to two months’ rent.
16. The owner needs to reduce the number of tenants sharing a dwelling unit in order to comply with Land Use Code restrictions (i.e., no more than 8 people per dwelling unit if any are unrelated).
17. The owner decides to terminate the tenancy of a tenant from a house containing an approved ADU in order to comply with the development standards for ADUs, after receiving a Notice of Violation of the Land Use Code. The owner must pay relocation assistance to displaced tenants in the amount of $2,000 for low-income tenants, or two months’ rent in other cases. SDCI may require a property owner to sign a certification of his or her intent to discontinue the use of the ADU.
18. An Emergency Order to vacate the property has been issued by SDCI and the tenants have failed to vacate by the deadline given in the Order.
Private right of action for tenants:
If an owner terminates a tenancy because (1) sale of a single family residence is planned, (2) the owner or a family member is to move in, or (3) substantial rehabilitation is planned, and if the owner fails to carry out the stated reason for eviction, the tenant can sue the owner for up to $3,000, costs, and reasonable attorney’s fees. Unless otherwise noted above, a termination of tenancy notice must be given at least 20 days prior to the start of the next rental period and must state the reason for termination in writing. Only those reasons listed above are lawful causes for terminating month-to-month tenancies in Seattle. For the complete text of the Just Cause Eviction Ordinance, go to the City of Seattle's, City Clerks website and click on Seattle Municipal. Call up section 22.206.160. For more information, call SDCI Property
Owner and Tenant Assistance at (206) 615-0808. Please note, under state law tenants wishing to terminate month-to-month tenancies must also follow proper notice
procedures, notifying the owner or manager in writing at least 20 days before the start of the next rental period.
https://www.seattle.gov/DPD/Publications/CAM/cam604.pdf