Washington — Ch. 26 Art. III Housing § 26-66

(a) In order to safeguard the safety, health, and welfare of the public, the code enforcement officer is authorized to enter onto private property within the city for the purposes of making inspections of the exterior of buildings and structures and performing duties under this article when there is sufficient exterior evidence of deterioration or neglect to warrant an exterior inspection. When, in the opinion of the code enforcement officer, it is deemed necessary or desirable to have inspections by any other department or official, the code enforcement officer may arrange for the coordination of inspections so as to minimize the number of visits by inspectors, and to avoid issuing conflicting orders or notices.
(b) When the code enforcement officer determines that there has been a violation of this article or has grounds to believe that a violation has occurred, notice shall be given to the owner of the building or structure. The notice shall:
(1) Be in writing;
(2) Include a description of the real estate sufficient for identification;
(3) Include a statement of the reason or reasons why the notice is being issued; and
(4) Include a correction order allowing a reasonable time of the repairs and improvements required to bring the building or structure into compliance with this article.