Home values in Snohomish County are up 32% on average, according to a Jan. 1 revaluation from the county assessor’s office. In 2021, there was an 11% increase in home values on average and a 7% increase in taxes, or an extra $331, according to the assessor’s office. The assessor’s office will know the final tax rate at the end of the year, after taxing districts set their budgets and ballot measures are passed.