Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$1,177,913$575 / 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
Last sold for $535,000 on Jul 17, 2017

31 UNION ST

BOOTHBAY HARBOR, ME 04538
3
Beds
3
Baths
2,048 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.
0.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1985
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$1.2M
$903K low$1.5M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$535,000 · Jul 17, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,549 (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.$758,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$265,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$493,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$824,410

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.Contemporary
CountyLINCOLN
Lot (acres)The size of the land the home sits on, from county records.0.22
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.Forced Air With Air Conditioning
FireplaceWhether the home has a fireplace, and what kind.Yes
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(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.

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%

Owner Tools

Do you own this home?
Claim this home

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

31 Union 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 95% of homes in Lincoln County
  • Costs more per square foot than 85% of homes in Boothbay Harbor
  • Bigger than 82% of homes in Lincoln County
  • Has a smaller lot than 95% of homes in Lincoln County
  • Newer than 77% 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 90% 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$1,177,913
CheaperTypical $575,819Pricier

Pricier than 90% of homes nearby

Price per ft²$575
CheaperTypical $398Pricier

Pricier than 81% of homes nearby

Living area2,048 ft²
SmallerTypical 1,428 ft²Bigger

Bigger than 78% of homes nearby

Lot size0.22 ac
SmallerTypical 0.48 acBigger

Bigger than 19% of homes nearby

Year built1985
OlderTypical 1950Newer

Newer than 74% of homes nearby

How 31 Union St ranks against every home in each area.
MeasureThis homeBoothbay HarborBoothbay Harbor 04538Lincoln County
Estimated valuepricier than$1,177,91394% of homes90% of homes95% of homes
Price per ft²pricier than$57585% of homes81% of homes81% of homes
Living areabigger than2,048 ft²78% of homes78% of homes82% of homes
Lot sizebigger than0.22 ac26% of homes19% of homes5% of homes
Year builtnewer than198577% of homes74% of homes56% of homes

About 31 Union St

How much is 31 Union St, Boothbay Harbor, ME worth?

The TopHap Estimate for 31 Union St, Boothbay Harbor, ME is $1,177,913 as of Sep 24, 2026. The likely range is $902,958 to $1,452,868. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 31 Union St, Boothbay Harbor, ME last sell?

31 Union St, Boothbay Harbor, ME last sold on Jul 17, 2017 for $535,000, according to the county's recorded deed.

How big is 31 Union St, Boothbay Harbor, ME?

31 Union St, Boothbay Harbor, ME has 3 bedrooms, 3 bathrooms, 2,048 square feet of living space and a 0.22-acre lot.

When was 31 Union St, Boothbay Harbor, ME built?

31 Union St, Boothbay Harbor, ME was built in 1985, making it 41 years old. It is a contemporary home. The building has 1 story.

What schools serve 31 Union St, Boothbay Harbor, ME?

31 Union St, 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 31 Union St, 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 90% of them ($1,177,913 against a typical $575,819), its price per square foot is higher than 81% of them ($575 against a typical $398), it is bigger than 78% of them (2,048 ft² against a typical 1,428 ft²), its lot is bigger than 19% of them (0.22 ac against a typical 0.48 ac) and it is newer than 74% of them (1985 against a typical 1950). Measured against all of Lincoln County, it is worth more than 95% 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 31 Union St, Boothbay Harbor, ME?

The 2025 property tax bill for 31 Union St, Boothbay Harbor, ME was $7,549. The county assessed it at $758,700.

More homes on Union St

Closest homes

More homes in Boothbay Harbor 04538

Assigned schools

Explore the area

See this home in context

Open 31 Union St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map