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Single Family ResidenceResidential
$427,426$166 / 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 83How 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 $233,000 on Mar 12, 2019

18 PROSPECT ST

TOPSHAM, ME 04086
5
Beds
3
Baths
2,580 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.
1895
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
10
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$427K
$354K low$501K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$233,000 · Mar 12, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,735 (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.$369,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$69,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$300,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$364,800

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
CountySAGADAHOC
Lot (acres)The size of the land the home sits on, from county records.0.19
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
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

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

Foreclosure Filings(2)

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

E
Woodside Elementary SchoolA
Elementary · Grades KG–5 · 0.9 mi
H
Mt Ararat High SchoolC
High · Grades 9–12 · 1.6 mi
M
Mt Ararat Middle SchoolB-
Middle · Grades 6–8 · 2.1 mi

District: School Administrative District 75

Neighborhood · ZIP 04086These 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.103
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.95
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.77

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.25%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.9,915
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.276 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$80,148
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$97,185
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.48 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 Prospect 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.

  • Costs less per square foot than 98% of homes in Topsham 04086
  • Bigger than 94% of homes in Topsham 04086
  • Has a smaller lot than 97% of homes in Topsham 04086
  • Older than 94% of homes in Topsham 04086

What homes are worth in Topsham 04086

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

This home
$270K$858K

This home is worth more than 38% of homes in Topsham 04086.

How it measures up in Topsham 04086

The dot is this home. The mark in the middle is the typical home in Topsham 04086.

Estimated value$427,426
CheaperTypical $460,424Pricier

Pricier than 38% of homes nearby

Price per ft²$166
CheaperTypical $323Pricier

Pricier than 2% of homes nearby

Living area2,580 ft²
SmallerTypical 1,450 ft²Bigger

Bigger than 94% of homes nearby

Lot size0.19 ac
SmallerTypical 0.86 acBigger

Bigger than 3% of homes nearby

Year built1895
OlderTypical 1985Newer

Newer than 6% of homes nearby

How 18 Prospect St ranks against every home in each area.
MeasureThis homeTopsham 04086Sagadahoc County
Estimated valuepricier than$427,42638% of homes45% of homes
Price per ft²pricier than$1662% of homes5% of homes
Living areabigger than2,580 ft²94% of homes91% of homes
Lot sizebigger than0.19 ac3% of homes11% of homes
Year builtnewer than18956% of homes14% of homes

About 18 Prospect St

How much is 18 Prospect St, Topsham, ME worth?

The TopHap Estimate for 18 Prospect St, Topsham, ME is $427,426 as of Sep 24, 2026. The likely range is $353,965 to $500,886. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Prospect St, Topsham, ME last sell?

18 Prospect St, Topsham, ME last sold on Mar 12, 2019 for $233,000, according to the county's recorded deed.

How big is 18 Prospect St, Topsham, ME?

18 Prospect St, Topsham, ME has 5 bedrooms, 3 bathrooms, 2,580 square feet of living space and a 0.19-acre lot.

When was 18 Prospect St, Topsham, ME built?

18 Prospect St, Topsham, ME was built in 1895, making it 131 years old. It is a conventional home. The building has 3 stories.

What schools serve 18 Prospect St, Topsham, ME?

18 Prospect St, Topsham, ME is assigned to Woodside Elementary School (elementary), rated A; Mt Ararat High School (high), rated C; Mt Ararat Middle School (middle), rated B-. All sit in School Administrative District 75. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18 Prospect St, Topsham, ME compare to other homes in Topsham 04086?

Among the 3,966 homes in Topsham 04086, it is worth more than 38% of them ($427,426 against a typical $460,424), its price per square foot is higher than 2% of them ($166 against a typical $323), it is bigger than 94% of them (2,580 ft² against a typical 1,450 ft²), its lot is bigger than 3% of them (0.19 ac against a typical 0.86 ac) and it is newer than 6% of them (1895 against a typical 1985). Measured against all of Sagadahoc County, it is worth more than 45% 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 Prospect St, Topsham, ME?

The 2025 property tax bill for 18 Prospect St, Topsham, ME was $4,735. The county assessed it at $369,900.

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