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Residential Income (General/Multi-Family)Residential
Last sold for $8,450,000 on Aug 19, 2019

421 MAIN ST

OSTERVILLE, MA 02655
0
Baths
5.46 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$8,450,000 · Aug 19, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$97,413 (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.$12,041,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$6,320,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$5,720,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$7,878,113

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.96 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.94%
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.Residential Income (General/Multi-Family)
CountyBARNSTABLE
Lot (acres)The size of the land the home sits on, from county records.5.46
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(13)

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.

E
West Villages Elementary SchoolB+
Elementary · Grades KG–3 · 2.4 mi
H
Barnstable High SchoolD
High · Grades 8–12 · 3.2 mi
M
Barnstable Intermediate SchoolD
Middle · Grades 6–7 · 3.3 mi

District: Barnstable School District

Neighborhood · ZIP 02655These 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.91
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.96
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.46

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.55%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.3,622
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.443 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$114,803
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$158,292
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.45 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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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

421 Main 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 largest lots in Osterville 02655

How it measures up in Osterville 02655

The dot is this home. The mark in the middle is the typical home in Osterville 02655.

Lot size5.46 ac
SmallerTypical 0.48 acBigger

Bigger than almost all homes nearby

How 421 Main St ranks against every home in each area.
MeasureThis homeOsterville 02655Barnstable County
Lot sizebigger than5.46 acalmost all homesalmost all homes

About 421 Main St

When did 421 Main St, Osterville, MA last sell?

421 Main St, Osterville, MA last sold on Aug 19, 2019 for $8,450,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

What schools serve 421 Main St, Osterville, MA?

421 Main St, Osterville, MA is assigned to West Villages Elementary School (elementary), rated B+; Barnstable High School (high), rated D; Barnstable Intermediate School (middle), rated D. All sit in Barnstable School District. Attendance boundaries change — confirm with the district before relying on an assignment.

What are the property taxes on 421 Main St, Osterville, MA?

The 2025 property tax bill for 421 Main St, Osterville, MA was $97,413. The county assessed it at $12,041,200.

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