Select a search type, then enter one or more search terms. Click advanced for more search. sep 1, 2021 · whatcom — a wide variety of factors affect property taxes around whatcom county, and it’s easier than ever to see who’s paying what. the whatcom county. assessed value and property tax. Assessors must value real property annually and properties are physically inspected at least once every 6 years. The valuation is based. you can contact the county assessor’s office to review your valuation any time you have a question regarding…