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Single Family ResidenceResidential
$452,371$253 / 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 88How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

21 PATTEN LN

TOPSHAM, ME 04086
3
Beds
1
Baths
1,790 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.
4.5 ac
Lot SizeThe size of the land the home sits on, from county records.
1973
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$452K
$397K low$508K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,750 (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.$449,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$73,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$375,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$448,400

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.17 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

Scores 0–100; higher = greater projected risk.

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.Ranch
CountySAGADAHOC
Lot (acres)The size of the land the home sits on, from county records.4.50
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(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.

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

M
Mt Ararat Middle SchoolB-
Middle · Grades 6–8 · 1.9 mi
H
Mt Ararat High SchoolC
High · Grades 9–12 · 2.3 mi
E
Woodside Elementary SchoolA
Elementary · Grades KG–5 · 3.0 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%

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 Patten Ln 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 66% of homes in Topsham 04086
  • Bigger than 70% of homes in Sagadahoc County
  • Has a bigger lot than 89% of homes in Topsham 04086
  • Older than 70% 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
$218K$757K

This home is worth more than 66% 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$452,371
CheaperTypical $395,005Pricier

Pricier than 66% of homes nearby

Price per ft²$253
CheaperTypical $279Pricier

Pricier than 40% of homes nearby

Living area1,790 ft²
SmallerTypical 1,456 ft²Bigger

Bigger than 68% of homes nearby

Lot size4.5 ac
SmallerTypical 0.86 acBigger

Bigger than 89% of homes nearby

Year built1973
OlderTypical 1985Newer

Newer than 30% of homes nearby

How 21 Patten Ln ranks against every home in each area.
MeasureThis homeTopsham 04086Sagadahoc County
Estimated valuepricier than$452,37166% of homes64% of homes
Price per ft²pricier than$25340% of homes41% of homes
Living areabigger than1,790 ft²68% of homes70% of homes
Lot sizebigger than4.5 ac89% of homes79% of homes
Year builtnewer than197330% of homes46% of homes

About 21 Patten Ln

How much is 21 Patten Ln, Topsham, ME worth?

The TopHap Estimate for 21 Patten Ln, Topsham, ME is $452,371 as of Jul 14, 2026. The likely range is $397,140 to $507,602. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Patten Ln, Topsham, ME last sell?

21 Patten Ln, Topsham, ME last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Patten Ln, Topsham, ME?

21 Patten Ln, Topsham, ME has 3 bedrooms, 1 bathrooms, 1,790 square feet of living space and a 4.50-acre lot.

When was 21 Patten Ln, Topsham, ME built?

21 Patten Ln, Topsham, ME was built in 1973, making it 53 years old. It is a ranch home. The building has 1 story.

What schools serve 21 Patten Ln, Topsham, ME?

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

How does 21 Patten Ln, Topsham, ME compare to other homes in Topsham 04086?

Among the 3,966 homes in Topsham 04086, it is worth more than 66% of them ($452,371 against a typical $395,005), its price per square foot is higher than 40% of them ($253 against a typical $279), it is bigger than 68% of them (1,790 ft² against a typical 1,456 ft²), its lot is bigger than 89% of them (4.5 ac against a typical 0.86 ac) and it is newer than 30% of them (1973 against a typical 1985). Measured against all of Sagadahoc County, it is worth more than 64% 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 Patten Ln, Topsham, ME?

The 2025 property tax bill for 21 Patten Ln, Topsham, ME was $5,750. The county assessed it at $449,200.

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