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Single Family ResidenceResidential
$532,737$298 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 77How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026

18 DUNN ST

THOMASTON, ME 04861
0
Baths
1,789 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.28 ac
Lot SizeThe size of the land the home sits on, from county records.
1891
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$533K
$410K low$656K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,194 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$188,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$67,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$120,700

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyKNOX
Lot (acres)The size of the land the home sits on, from county records.0.28
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(4)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Oceanside Middle SchoolC
Middle · Grades 6–8 · 0.4 mi
E
Thomaston Grammar SchoolA
Elementary · Grades KG–5 · 0.5 mi
H
Oceanside High SchoolD
High · Grades 9–12 · 4.4 mi

District: Regional School Unit 13

Neighborhood · ZIP 04861These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.121
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.79
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.57

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.16%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.2,815
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.241 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$67,361
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$70,345
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.50 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.50%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

18 Dunn St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth more than 91% of homes in Thomaston 04861
  • Costs more per square foot than 81% of homes in Thomaston 04861
  • Has a smaller lot than 84% of homes in Thomaston 04861
  • Older than 85% of homes in Knox County

What homes are worth in Thomaston 04861

Each bar is how many homes fall in that price range. The marker is this home.

This home
$184K$683K

This home is worth more than 91% of homes in Thomaston 04861.

How it measures up in Thomaston 04861

The dot is this home. The mark in the middle is the typical home in Thomaston 04861.

Estimated value$532,737
CheaperTypical $365,000Pricier

Pricier than 91% of homes nearby

Price per ft²$298
CheaperTypical $237Pricier

Pricier than 81% of homes nearby

Living area1,789 ft²
SmallerTypical 1,568 ft²Bigger

Bigger than 61% of homes nearby

Lot size0.28 ac
SmallerTypical 0.54 acBigger

Bigger than 16% of homes nearby

Year built1891
OlderTypical 1967Newer

Newer than 32% of homes nearby

How 18 Dunn St ranks against every home in each area.
MeasureThis homeThomaston 04861Knox County
Estimated valuepricier than$532,73791% of homes63% of homes
Price per ft²pricier than$29881% of homes40% of homes
Living areabigger than1,789 ft²61% of homes64% of homes
Lot sizebigger than0.28 ac16% of homes16% of homes
Year builtnewer than189132% of homes15% of homes

About 18 Dunn St

How much is 18 Dunn St, Thomaston, ME worth?

The TopHap Estimate for 18 Dunn St, Thomaston, ME is $532,737 as of Sep 24, 2026. The likely range is $409,730 to $655,744. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Dunn St, Thomaston, ME last sell?

18 Dunn St, Thomaston, ME last sold on Jul 22, 2020, according to the county's recorded deed.

How big is 18 Dunn St, Thomaston, ME?

18 Dunn St, Thomaston, ME has 1,789 square feet of living space and a 0.28-acre lot.

When was 18 Dunn St, Thomaston, ME built?

18 Dunn St, Thomaston, ME was built in 1891, making it 135 years old. The building has 2 stories.

What schools serve 18 Dunn St, Thomaston, ME?

18 Dunn St, Thomaston, ME is assigned to Oceanside Middle School (middle), rated C; Thomaston Grammar School (elementary), rated A; Oceanside High School (high), rated D. All sit in Regional School Unit 13. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18 Dunn St, Thomaston, ME compare to other homes in Thomaston 04861?

Among the 1,122 homes in Thomaston 04861, it is worth more than 91% of them ($532,737 against a typical $365,000), its price per square foot is higher than 81% of them ($298 against a typical $237), it is bigger than 61% of them (1,789 ft² against a typical 1,568 ft²), its lot is bigger than 16% of them (0.28 ac against a typical 0.54 ac) and it is newer than 32% of them (1891 against a typical 1967). Measured against all of Knox County, it is worth more than 63% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 18 Dunn St, Thomaston, ME?

The 2025 property tax bill for 18 Dunn St, Thomaston, ME was $4,194. The county assessed it at $188,500.

More homes on Dunn St

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Assigned schools

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