Knox County Assessor

Find Knox County Maine assessor, assessment, auditor's, and appraiser's office, revenue commissions, GIS, and tax equalization departments. Assessors provide information on property and land tax assessment, property listings, values, valuations, property search, and records.


Friendship Town Assessor 6 Harbor Road Friendship ME 04547 207-832-5709


Knox County Registry Of Deeds 62 Union Street Rockland ME 04841 207-594-0422

Rockland Assessor 270 Pleasant Street Rockland ME 04841 207-594-0303

Rockport Town Assessor 101 Main St Rockport ME 04856 207-230-0180

Vinalhaven Assessor 19 Washington School Road Vinalhaven ME 04863 207-863-2168

What if I disagree with an assessment?

Most jurisdictions have an appeal process for contesting an assessment. While the specific rules vary from one locality to the next, the process typically involves a hearing before an assessment appeal board. Taxpayers who have concerns about their assessment should visit their local Assessor's Office or its website to learn about the appeal process and what information is required in order to appeal a property tax assessment.

How does my assessment affect the taxes I owe?

The formula used to calculate property taxes varies by location. Your assessment is one part of your property tax calculation. Your property tax payment is calculated by multiplying your property's assessed value, or in some cases half of the assessed value, by the tax rate for your location.

What is the difference between assessed value and market value?

Market value is the likely selling price of a property based on current market conditions. In some jurisdictions, the Assessor calculates an assessed value by applying a factor, for example 70%, to the market value. The assessed value is then used to calculate the taxes for that property.