Bed Bugs in a Tacoma Rental: What Washington Law and City Code Say

The state duty: RCW 59.18.060

The Residential Landlord-Tenant Act says a landlord “will at all times during the tenancy keep the premises fit for human habitation, and shall in particular ... (4) Provide a reasonable program for the control of infestation by insects, rodents, and other pests at the initiation of the tenancy and, except in the case of a single-family residence, control infestation during tenancy except where such infestation is caused by the tenant.”

Three carve-outs sit inside that sentence. A single-family residence landlord owes the control program at move-in but not during the tenancy. An infestation caused by the tenant is the tenant’s to fix — the tenant-duties section says a tenant shall “assume all costs of extermination and fumigation for infestation caused by the tenant” (RCW 59.18.130(2)). And the statute’s closing paragraph removes the landlord’s duty where the tenant “unreasonably fails to allow the landlord access.”

Two things Washington law does not do: it never uses the words “bed bug” anywhere in chapter 59.18, and it does not define “reasonable program.” Bed bugs are an “infestation by insects”; the generic rule is the rule.

The city standard: Tacoma Municipal Code 2.01

Tacoma’s Minimum Building and Structures Code applies to “all buildings,” defines an infestation as “the presence of insects, rodents, vermin, or other pests to a degree that is harmful to the building, its occupants, or to neighboring properties” (2.01.040.AA), and sets the standard in one paragraph: “Every building shall be kept free from infestations of vermin. Where infestations of vermin are found, they shall be promptly eliminated by extermination. After elimination of infestations, proper precautions shall be taken to prevent reinfestations” (2.01.060.II). On the city’s substandard-property point schedule, “Infestations or Vermin” scores 25 points — the same tier as overcrowding.

The lever: Tacoma’s Rental Housing Code (TMC 1.95)

Chapter 1.95 has no pest rule of its own. What it does is tie the landlord’s business to compliance: no rent increase notice and no notice to vacate unless the landlord has registered each unit and certified that it “complies with RCW 59.18.060” (1.95.060.E, 1.95.070.B), and an eviction is barred on the same ground (1.95.090.A.3.a). It also bars retaliation for a tenant’s complaint, pointing to RCW 59.18.240 and .250 (1.95.090.A.2), and requires landlords to hand tenants the city’s summary of these rights when a lease is offered (1.95.030.B.3).

What this means in practice

• Tenant in a multi-unit building: absent evidence you brought them in, the landlord’s duty to control the infestation runs through the tenancy. Give written notice (RCW 59.18.070 sets the repair clock) and keep a copy.
• Tenant in a single-family house: the move-in duty applies; the during-tenancy duty does not. The lease may say more.
• Landlord: a prompt, documented extermination satisfies both the state program duty and the city’s “promptly eliminated by extermination” standard. Our report is written to be that document.
• Either side: the health department does not run a bed bug complaint program for private rentals; building-condition complaints are a City of Tacoma code matter under 2.01.