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Single Family ResidenceResidential
$862,430$480 / 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 96How 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
Last sold for $850,000 on Jun 23, 2026

21 UNION CT

BOOTHBAY HARBOR, ME 04538
3
Beds
2
Baths
1,796 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.
1.3 ac
Lot SizeThe size of the land the home sits on, from county records.
1986
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$862K
$827K low$898K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$850,000 · Jun 23, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,471 (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.$348,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$156,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$192,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$482,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$412,585

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyLINCOLN
Lot (acres)The size of the land the home sits on, from county records.1.30
ConstructionThe main material the home's frame and walls are built from.Concrete
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck

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.

H
Boothbay Region High SchoolB-
High · Grades 9–12 · 0.8 mi
E
Boothbay Region Elementary SchoolB
Elementary · Grades PK–8 · 0.8 mi

District: Boothbay-Boothbay Harbor Community School District

Neighborhood · ZIP 04538These 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.183
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.67

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.53%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.6%
PopulationHow many people live in this area.1,877
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.$67,283
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$88,052
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.47 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

21 Union Ct 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 89% of homes in Lincoln County
  • Costs more per square foot than 72% of homes in Lincoln County
  • Bigger than 75% of homes in Lincoln County
  • Has a bigger lot than 91% of homes in Boothbay Harbor
  • Newer than 82% of homes in Boothbay Harbor

What homes are worth in Boothbay Harbor 04538

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

This home
$245K$2M

This home is worth more than 80% of homes in Boothbay Harbor 04538.

How it measures up in Boothbay Harbor 04538

The dot is this home. The mark in the middle is the typical home in Boothbay Harbor 04538.

Estimated value$862,430
CheaperTypical $575,819Pricier

Pricier than 80% of homes nearby

Price per ft²$480
CheaperTypical $398Pricier

Pricier than 66% of homes nearby

Living area1,796 ft²
SmallerTypical 1,428 ft²Bigger

Bigger than 68% of homes nearby

Lot size1.3 ac
SmallerTypical 0.48 acBigger

Bigger than 83% of homes nearby

Year built1986
OlderTypical 1950Newer

Newer than 77% of homes nearby

How 21 Union Ct ranks against every home in each area.
MeasureThis homeBoothbay HarborBoothbay Harbor 04538Lincoln County
Estimated valuepricier than$862,43084% of homes80% of homes89% of homes
Price per ft²pricier than$48068% of homes66% of homes72% of homes
Living areabigger than1,796 ft²70% of homes68% of homes75% of homes
Lot sizebigger than1.3 ac91% of homes83% of homes38% of homes
Year builtnewer than198682% of homes77% of homes58% of homes

About 21 Union Ct

How much is 21 Union Ct, Boothbay Harbor, ME worth?

The TopHap Estimate for 21 Union Ct, Boothbay Harbor, ME is $862,430 as of Sep 24, 2026. The likely range is $826,743 to $898,117. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Union Ct, Boothbay Harbor, ME last sell?

21 Union Ct, Boothbay Harbor, ME last sold on Jun 23, 2026 for $850,000, according to the county's recorded deed.

How big is 21 Union Ct, Boothbay Harbor, ME?

21 Union Ct, Boothbay Harbor, ME has 3 bedrooms, 2 bathrooms, 1,796 square feet of living space and a 1.30-acre lot.

When was 21 Union Ct, Boothbay Harbor, ME built?

21 Union Ct, Boothbay Harbor, ME was built in 1986, making it 40 years old. It is a conventional home. The building has 1 story.

What schools serve 21 Union Ct, Boothbay Harbor, ME?

21 Union Ct, Boothbay Harbor, ME is assigned to Boothbay Region High School (high), rated B-; Boothbay Region Elementary School (elementary), rated B. All sit in Boothbay-Boothbay Harbor Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Union Ct, Boothbay Harbor, ME compare to other homes in Boothbay Harbor 04538?

Among the 1,733 homes in Boothbay Harbor 04538, it is worth more than 80% of them ($862,430 against a typical $575,819), its price per square foot is higher than 66% of them ($480 against a typical $398), it is bigger than 68% of them (1,796 ft² against a typical 1,428 ft²), its lot is bigger than 83% of them (1.3 ac against a typical 0.48 ac) and it is newer than 77% of them (1986 against a typical 1950). Measured against all of Lincoln County, it is worth more than 89% 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 21 Union Ct, Boothbay Harbor, ME?

The 2025 property tax bill for 21 Union Ct, Boothbay Harbor, ME was $3,471. The county assessed it at $348,800.

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