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Single Family ResidenceResidential
$499,258$371 / 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 75How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $186,000 on Dec 17, 2019

20 DUNN ST

THOMASTON, ME 04861
0
Baths
1,344 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1949
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$499K
$375K low$624K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$186,000 · Dec 17, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,820 (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.$171,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$51,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$120,600

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.0.19
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

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

20 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 87% of homes in Thomaston 04861
  • Costs more per square foot than 95% of homes in Thomaston 04861
  • Has a smaller lot than 95% of homes in Thomaston 04861
  • Older than 67% 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
$191K$698K

This home is worth more than 87% 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$499,258
CheaperTypical $362,109Pricier

Pricier than 87% of homes nearby

Price per ft²$371
CheaperTypical $236Pricier

Pricier than 95% of homes nearby

Living area1,344 ft²
SmallerTypical 1,568 ft²Bigger

Bigger than 36% of homes nearby

Lot size0.19 ac
SmallerTypical 0.56 acBigger

Bigger than 5% of homes nearby

Year built1949
OlderTypical 1967Newer

Newer than 42% of homes nearby

How 20 Dunn St ranks against every home in each area.
MeasureThis homeThomaston 04861Knox County
Estimated valuepricier than$499,25887% of homes57% of homes
Price per ft²pricier than$37195% of homes60% of homes
Living areabigger than1,344 ft²36% of homes40% of homes
Lot sizebigger than0.19 ac5% of homes8% of homes
Year builtnewer than194942% of homes33% of homes

About 20 Dunn St

How much is 20 Dunn St, Thomaston, ME worth?

The TopHap Estimate for 20 Dunn St, Thomaston, ME is $499,258 as of Oct 21, 2026. The likely range is $374,910 to $623,606. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Dunn St, Thomaston, ME last sell?

20 Dunn St, Thomaston, ME last sold on Dec 17, 2019 for $186,000, according to the county's recorded deed.

How big is 20 Dunn St, Thomaston, ME?

20 Dunn St, Thomaston, ME has 1,344 square feet of living space and a 0.19-acre lot.

When was 20 Dunn St, Thomaston, ME built?

20 Dunn St, Thomaston, ME was built in 1949, making it 77 years old. The building has 2 stories.

What schools serve 20 Dunn St, Thomaston, ME?

20 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 20 Dunn St, Thomaston, ME compare to other homes in Thomaston 04861?

Among the 1,122 homes in Thomaston 04861, it is worth more than 87% of them ($499,258 against a typical $362,109), its price per square foot is higher than 95% of them ($371 against a typical $236), it is bigger than 36% of them (1,344 ft² against a typical 1,568 ft²), its lot is bigger than 5% of them (0.19 ac against a typical 0.56 ac) and it is newer than 42% of them (1949 against a typical 1967). Measured against all of Knox County, it is worth more than 57% 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 20 Dunn St, Thomaston, ME?

The 2025 property tax bill for 20 Dunn St, Thomaston, ME was $3,820. The county assessed it at $171,700.

More homes on Dunn St

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More homes in Thomaston 04861

Assigned schools

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