Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$3,000,000$1,839 / 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 86How 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
Last sold for $2,437,500 on Sep 19, 2023

21 MASON ST

FALMOUTH, ME 04105
4
Beds
3.5
Baths
1,631 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.
0.13 ac
Lot SizeThe size of the land the home sits on, from county records.
1890
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$3M
$2.6M low$3.4M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$2,437,500 · Sep 19, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$23,382 (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.$1,688,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,331,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$356,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,679,500

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.55 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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.Cape Cod
CountyCUMBERLAND
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2008
Lot (acres)The size of the land the home sits on, from county records.0.13
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
CoolingThe type of cooling or air conditioning in the home.Yes
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.

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

H
Falmouth High SchoolA
High · Grades 9–12 · 3.4 mi
M
Falmouth Middle SchoolA+
Middle · Grades 6–8 · 3.5 mi
E
Falmouth Elementary SchoolA+
Elementary · Grades PK–5 · 3.5 mi

District: Falmouth

Neighborhood · ZIP 04105These 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.40
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.84

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.37%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.1.8%
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.12,902
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.299 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$136,857
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$200,230
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.57%

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

21 Mason 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.

  • Among the most valuable homes in Cumberland County
  • Among the highest price per square foot in Cumberland County
  • Smaller than 74% of homes in Falmouth 04105
  • Has a smaller lot than 97% of homes in Falmouth 04105
  • Older than 96% of homes in Falmouth 04105

What homes are worth in Falmouth 04105

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

This home
$399K$2.8M

This home is worth more than 98% of homes in Falmouth 04105.

How it measures up in Falmouth 04105

The dot is this home. The mark in the middle is the typical home in Falmouth 04105.

Estimated value$3,000,000
CheaperTypical $893,065Pricier

Pricier than 98% of homes nearby

Price per ft²$1839
CheaperTypical $423Pricier

Pricier than almost all homes nearby

Living area1,631 ft²
SmallerTypical 2,208 ft²Bigger

Bigger than 26% of homes nearby

Lot size0.13 ac
SmallerTypical 0.94 acBigger

Bigger than 3% of homes nearby

Year built1890
OlderTypical 1985Newer

Newer than 4% of homes nearby

How 21 Mason St ranks against every home in each area.
MeasureThis homeFalmouth 04105Cumberland County
Estimated valuepricier than$3,000,00098% of homesalmost all homes
Price per ft²pricier than$1839almost all homesalmost all homes
Living areabigger than1,631 ft²26% of homes55% of homes
Lot sizebigger than0.13 ac3% of homes9% of homes
Year builtnewer than18904% of homes5% of homes

About 21 Mason St

How much is 21 Mason St, Falmouth, ME worth?

The TopHap Estimate for 21 Mason St, Falmouth, ME is $3,000,000 as of Jul 14, 2026. The likely range is $2,567,195 to $3,432,806. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Mason St, Falmouth, ME last sell?

21 Mason St, Falmouth, ME last sold on Sep 19, 2023 for $2,437,500, according to the county's recorded deed.

How big is 21 Mason St, Falmouth, ME?

21 Mason St, Falmouth, ME has 4 bedrooms, 3.5 bathrooms, 1,631 square feet of living space and a 0.13-acre lot.

When was 21 Mason St, Falmouth, ME built?

21 Mason St, Falmouth, ME was built in 1890, making it 136 years old. It is a cape cod home. The building has 2 stories.

What schools serve 21 Mason St, Falmouth, ME?

21 Mason St, Falmouth, ME is assigned to Falmouth High School (high), rated A; Falmouth Middle School (middle), rated A+; Falmouth Elementary School (elementary), rated A+. All sit in Falmouth. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Mason St, Falmouth, ME compare to other homes in Falmouth 04105?

Among the 4,967 homes in Falmouth 04105, it is worth more than 98% of them ($3,000,000 against a typical $893,065), its price per square foot is higher than almost all of them ($1839 against a typical $423), it is bigger than 26% of them (1,631 ft² against a typical 2,208 ft²), its lot is bigger than 3% of them (0.13 ac against a typical 0.94 ac) and it is newer than 4% of them (1890 against a typical 1985). Measured against all of Cumberland County, it is worth more than almost all 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 Mason St, Falmouth, ME?

The 2025 property tax bill for 21 Mason St, Falmouth, ME was $23,382. The county assessed it at $1,688,200.

More homes on Mason St

Closest homes

More homes in Falmouth 04105

Assigned schools

Explore the area

See this home in context

Open 21 Mason 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