I am personally glad to see states clamp down and believe many more will be addressing issues of unlawful activities.

"RCW 59.18.352Threatening behavior by tenant—Termination of agreement—Written notice—Financial obligations.If a tenant notifies the landlord that he or she, or another tenant who shares that particular dwelling unit has been threatened by another tenant, and:(1) The threat was made with a firearm or other deadly weapon as defined in RCW 9A.04.110; and(2) The tenant who made the threat is arrested as a result of the threatening behavior; and(3) The landlord fails to file an unlawful detainer action against the tenant who threatened another tenant within seven calendar days after receiving notice of the arrest from a law enforcement agency;then the tenant who was threatened may terminate the rental agreement and quit the premises upon written notice to the landlord without further obligation under the rental agreement.A tenant who terminates a rental agreement under this section is discharged from payment of rent for any period following the quitting date, and is entitled to a pro rata refund of any prepaid rent, and shall receive a full and specific statement of the basis for retaining any of the deposit together with any refund due in accordance with RCW 59.18.280.Nothing in this section shall be construed to require a landlord to terminate a rental agreement or file an unlawful detainer action."

There is a difference between an eviction and unlawful detainer in our state.

I was not willing to wait for them to move on their own schedule and send them a 5-day notice to vacate the premises, filing immediately for unlawful detainer.

Spend a day observing in your eviction/ unlawful detainer court.  

Here's mine as an example:Tenant, his guests or invitees, shall not engage in criminal activity, including but not limited to violence, threats of violence, unlawful discharge of firearms, or drug-related criminal activity.

It's NOT an unpermitted in-law unit, or we've got an issue, and there needs to not be a tenant [or cousin Joe...] in there.It takes about 15 minutes to turn an unpermitted unlawful zoning-violating end-of-the-freaking-world in-law unit into a perfectly fine storage shed and/or detached work area in our market.

Rule 510.3Recovery of Attorney's Fees and CostsTo recover attorney's fees in an eviction suit, a landlord must give a tenant who is unlawfully retaining possession of the landlord's premises a written demand to vacate the premises.

I have read recent accounts of states finding assgent contracts unlawful as well as agreements In place between JV co-wholesaleing partners.

"Violations fall under this state law reference: Unlawful posting of advertisements G.S.14-145, which if the charge sticks, results in a Class 3 misdemeanor.