Property taxes in Maine are set town by town, and the person who decides what your home, camp or business is worth is the local assessor. If you own land, want to challenge a valuation or need to claim a homestead exemption, your first stop is the assessor's office in the municipality where the property sits. This page explains how those offices are organized across Maine, how they differ between the southern coast and the northern woods, and what to bring when you visit.

Our directory lists 48 offices. They range from full-time assessing departments in Augusta and Portland to part-time town offices in places like Friendship and Lamoine. It also includes county Registries of Deeds, which do a different job. Knowing which office handles your question saves a wasted trip.

How Property Assessment Works Across Maine

Maine has no countywide assessor system. Each city, town and plantation assesses the property inside its own borders. The rules come mainly from Title 36 of the Maine Revised Statutes, the state's tax law.

Maine Revenue Services supervises the system through its Property Tax Division. It is part of the Department of Administrative and Financial Services and is based in Augusta. The division issues guidance, supports the certification of assessors, reviews municipal valuations and compares assessed values with actual sales prices each year.

The key date is April 1. Property is valued as of that day, and the value drives your tax bill for the year. Ownership, use and exemption status on April 1 also matter. Most exemption applications must reach the assessor by that date.

The assessor sets the value, not the tax rate. Voters at town meeting, or the city council, approve the budget. The municipality then divides the amount it must raise by total taxable value to get the mill rate, which is the tax per $1,000 of value. Your bill is your assessed value multiplied by that rate. If you disagree with the bill, ask first whether the dispute is about value or about the budget. Only value can be taken to the assessor.

Who Actually Serves as Assessor

In many small Maine towns the board of selectmen serves as the board of assessors. They usually hire a certified assessing agent, often a contractor who works for several towns. That is why a rural office may be open only a few days a week, or why the number on the town website reaches a contractor.

Larger municipalities run permanent departments with full-time appraisers and clerks. Augusta, Portland and Biddeford fall into this group. These offices typically have regular counter hours and staff who can pull up a parcel in minutes.

Land in the unorganized territory has no town government. In those areas the state assesses property directly through Maine Revenue Services. If your camp or woodlot is in an unorganized township, the state is your assessor.

Valuation, Revaluation and the Assessment Ratio

Maine law measures property against just value, which is essentially fair market value. The state expects municipal assessments to stay reasonably close to what properties sell for. When sales prices climb faster than assessments, the ratio drifts, and the town may need a revaluation.

A revaluation can raise your assessed value sharply. That does not always mean a bigger tax bill. When all values rise, the mill rate usually falls, so what matters is your change relative to the rest of town. Always compare your new value with the rate before assuming the worst.

Assessor Offices from York County to Aroostook County

Maine is a long state, and the offices reflect it. Density is highest in the south and along the coast, and thins out quickly to the north.

Southern coast. York County has the most listings in our database, with eight. They include Biddeford Assessor at 205 Main Street (207-284-9003), Kennebunk Assessor at 1 Summer Street (207-985-4852), Kittery Assessor at 200 Rogers Road (207-439-0459), Eliot Assessor at 1333 State Road (207-439-1813) and Lyman Assessor at 11 South Waterboro Road (207-499-2427). Seasonal homes, shorefront and rising sales make valuation questions common here.

Greater Portland. In Cumberland County, our listings include Cape Elizabeth Assessor at 320 Ocean House Road (207-799-1619) and Gorham Assessor at 75 South Street (207-839-5038). The Cumberland County Registry Of Deeds is at 25 Pearl Street in Portland (207-871-8399). Portland is the state's largest city, so its assessing office handles the highest volume in Maine.

Midcoast and the capital region. Bath Assessor is at 55 Front Street (207-443-8336). In Knox County, the Knox County Registry Of Deeds sits at 62 Union Street in Rockland (207-594-0422), and Friendship Town Assessor is at 6 Harbor Road (207-832-5709). Boothbay Assessor, at 1011 Wiscasset Road (207-633-2115), serves the Lincoln County peninsula. In Kennebec County, Augusta Assessor is at 16 Cony Street (207-626-2320) and Gardiner Assessor is at 6 Church Street (207-582-6892).

Downeast and Penobscot Bay. Hancock County has Bar Harbor Assessor at 93 Cottage Street (207-288-3320), Bucksport Assessor at 50 Main Street (207-469-7949) and Lamoine Assessors at 606 Douglas Highway (207-667-2242). The Hancock County Registry Of Deeds is at 50 State Street in Ellsworth (207-667-8353). Further inland, Penobscot County records are at the registry at 97 Hammond Street in Bangor (207-942-8797).

North and west. Rural counties have fewer listings, and offices are farther apart. The Aroostook County Registry Of Deeds is at 22 Hall Street in Fort Kent (207-834-3925). The Franklin County registry is on Route 46 in Farmington (207-778-5889). The Piscataquis County registry is at 159 East Main Street in Dover-Foxcroft (207-564-2411). Skowhegan Assessor is at 225 Water Street (207-474-6903). In these areas a phone call before a long drive is worth the few minutes.

Assessor or Registry of Deeds: Which Maine Office Do You Need?

People often confuse the two. They are separate offices, run by separate governments, and they answer different questions.

The municipal assessor values property, keeps tax maps and property record cards, and processes exemptions and abatement requests. If your question is about what your property is worth for tax purposes, go there.

The county Registry of Deeds is the permanent record of who owns what. It records deeds, mortgages, liens, plans and easements. It does not assess value or collect property tax. If you are buying a house, researching a boundary or checking for a mortgage, the registry is where you search.

The registry also collects the real estate transfer tax when a deed is recorded. In Maine, buyer and seller each pay a share of that tax. Registries are organized by county or district. Aroostook County is large enough to have more than one, so confirm which one holds the records for your town.

What to Bring and When to Go

A little preparation shortens any visit to a Maine assessor's office. Bring the following:

Timing matters as much as paperwork. Aim to file exemptions well before April 1. Tax bills usually arrive in late summer, and counters get crowded then. If you think your value is too high, you have 185 days from the date taxes were committed to ask for an abatement in writing. Do not wait until the last week. Small-town offices keep short hours, so call first.

Property assessor offices in Maine operate under state property tax statutes that specify how properties must be valued, how often reappraisals occur, and what exemptions are available to qualifying homeowners. The state department of revenue or taxation typically provides oversight and technical guidance to county assessors to ensure consistent valuation practices statewide.

Assessor locations are available in 43 cities across Maine. They are spread across 16 counties.

Cities with the highest concentration include Portland, Bath, Rockland, where high real estate activity and complex commercial properties create greater demand for assessor services and property valuation resources.

Property owners in Maine should verify that their primary residence homestead exemption is active and confirm the annual appeal deadline with their local assessor office, as missing the deadline means waiting until the following tax year to contest a valuation.

Assessor by Counties

A
C
F
H
K
L
O
P
S
W
Y

Many county assessor offices in Maine now offer online property search tools where homeowners can view their assessed value, recent sales history, and exemption status without visiting the office. If you have questions about a recent reassessment notice, calling or emailing the assessor's office is often the fastest way to get a response before filing a formal appeal.

Browse Assessor by county across Maine to find the nearest location.

Maine Property Tax Relief and Deadlines to Know

Several Maine programs reduce what homeowners pay, and nearly all of them start at the local assessor's counter. The homestead exemption lowers the taxable value of a primary residence. You generally must have owned the home and lived in it as your permanent residence for at least twelve months, and you apply by April 1. Once approved, it normally carries forward without re-filing each year.

Veterans, people who are legally blind and some surviving spouses may qualify for separate exemptions. Landowners can also enroll in the Tree Growth, Farm and Open Space, and Working Waterfront programs. These value land by its current use rather than its development potential. Each has its own application and eligibility rules, so ask your assessor for the forms.

Two other programs work differently. The Property Tax Fairness Credit is claimed through the state income tax return. The property tax stabilization program for seniors is applied for through the municipality. Check current income and residency limits with the municipal office or Maine Revenue Services before you apply.

Frequently Asked Questions About Assessors in Maine

Start by asking your assessor to review the value informally. If that fails, file a written abatement request within 185 days of the date taxes were committed. The assessors then have a set period to answer. If they deny the request, or do not respond in time, you can appeal to the municipal board of assessment review or to the county commissioners, usually within 60 days. After that, the Superior Court is the next step. Ask your assessor which body hears appeals in your town.

You must be a Maine resident who owns the home and has lived in it as a permanent residence for at least twelve months. You file with the assessor in the town where the home is located, and the application must be in by April 1 to count for that tax year. A new owner needs to apply even if the previous owner had the exemption. Bring photo ID and proof of ownership. The exemption reduces taxable value, not the mill rate.

Yes. Maine Revenue Services, through its Property Tax Division in Augusta, supervises property taxation statewide under Title 36 of the Maine Revised Statutes. It trains and certifies assessors, reviews municipal valuations and publishes forms and guidance. It does not set the value of an individual home in an organized town, so it cannot change your assessment. The one exception is the unorganized territory, where the state acts as the assessor. For all other disputes, begin at your local assessor's office.

The Cumberland County Registry Of Deeds is at 25 Pearl Street in Portland, phone 207-871-8399. The Knox County Registry Of Deeds is at 62 Union Street in Rockland, phone 207-594-0422. The Penobscot County Registry Of Deeds is at 97 Hammond Street in Bangor, phone 207-942-8797. Each one records deeds, mortgages and liens for its county. Call before visiting to confirm public hours and how to search the records. None of them sets property values.

Often you can, though it varies by municipality. Many Maine towns post tax maps, property record cards or commitment books on their websites. Others will answer by phone or email. Try Augusta Assessor at 207-626-2320, Bath Assessor at 207-443-8336 or Biddeford Assessor at 207-284-9003. Small towns with part-time offices may need an appointment. Property records are public in Maine, so you do not need to own the parcel to ask about its value.

Unpaid taxes accrue interest. The municipality can then record a tax lien certificate at the county Registry of Deeds. After the lien is recorded, the owner has a redemption period of about 18 months, and paying the taxes, interest and costs ends the process. If the lien is not redeemed, the property can be foreclosed automatically. The tax collector and treasurer handle payment, not the assessor. Contact the town office as soon as you fall behind, because many offer payment arrangements.