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Single Family ResidenceResidential
$3,378,724$1,347 / 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 91How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $1,900,000 on Jun 15, 2006

320 GRAND ISLAND DR

OSTERVILLE, MA 02655
3
Beds
3
Baths
2,508 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.
1.31 ac
Lot SizeThe size of the land the home sits on, from county records.
1930
Year BuiltThe year the home was originally built, according to county records.
2
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

$3.4M
$3.1M low$3.7M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,900,000 · Jun 15, 2006

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$21,226 (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.$2,623,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,753,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$870,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$3,459,045

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.65 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.95%
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.Cape Cod
CountyBARNSTABLE
Lot (acres)The size of the land the home sits on, from county records.1.31
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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(6)

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 · 3.6 mi
H
Barnstable High SchoolD
High · Grades 8–12 · 5.7 mi
M
Barnstable Intermediate SchoolD
Middle · Grades 6–7 · 5.9 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

320 Grand Island Dr 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 98% of homes in Barnstable County
  • Costs more per square foot than 96% of homes in Barnstable County
  • Bigger than 85% of homes in Barnstable County
  • Has a bigger lot than 92% of homes in Barnstable County
  • Older than 91% of homes in Barnstable County

What homes are worth in Osterville 02655

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

This home
$371K$10M

This home is worth more than 82% of homes 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.

Estimated value$3,378,724
CheaperTypical $1,100,572Pricier

Pricier than 82% of homes nearby

Price per ft²$1347
CheaperTypical $591Pricier

Pricier than 92% of homes nearby

Living area2,508 ft²
SmallerTypical 1,937 ft²Bigger

Bigger than 65% of homes nearby

Lot size1.31 ac
SmallerTypical 0.48 acBigger

Bigger than 83% of homes nearby

Year built1930
OlderTypical 1979Newer

Newer than 10% of homes nearby

How 320 Grand Island Dr ranks against every home in each area.
MeasureThis homeOsterville 02655Barnstable County
Estimated valuepricier than$3,378,72482% of homes98% of homes
Price per ft²pricier than$134792% of homes96% of homes
Living areabigger than2,508 ft²65% of homes85% of homes
Lot sizebigger than1.31 ac83% of homes92% of homes
Year builtnewer than193010% of homes9% of homes

About 320 Grand Island Dr

How much is 320 Grand Island Dr, Osterville, MA worth?

The TopHap Estimate for 320 Grand Island Dr, Osterville, MA is $3,378,724 as of Oct 21, 2026. The likely range is $3,077,965 to $3,679,483. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 320 Grand Island Dr, Osterville, MA last sell?

320 Grand Island Dr, Osterville, MA last sold on Jun 15, 2006 for $1,900,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 320 Grand Island Dr, Osterville, MA?

320 Grand Island Dr, Osterville, MA has 3 bedrooms, 3 bathrooms, 2,508 square feet of living space and a 1.31-acre lot.

When was 320 Grand Island Dr, Osterville, MA built?

320 Grand Island Dr, Osterville, MA was built in 1930, making it 96 years old. It is a cape cod home. The building has 2 stories.

What schools serve 320 Grand Island Dr, Osterville, MA?

320 Grand Island Dr, 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.

How does 320 Grand Island Dr, Osterville, MA compare to other homes in Osterville 02655?

Among the 2,728 homes in Osterville 02655, it is worth more than 82% of them ($3,378,724 against a typical $1,100,572), its price per square foot is higher than 92% of them ($1347 against a typical $591), it is bigger than 65% of them (2,508 ft² against a typical 1,937 ft²), its lot is bigger than 83% of them (1.31 ac against a typical 0.48 ac) and it is newer than 10% of them (1930 against a typical 1979). Measured against all of Barnstable County, it is worth more than 98% 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 320 Grand Island Dr, Osterville, MA?

The 2025 property tax bill for 320 Grand Island Dr, Osterville, MA was $21,226. The county assessed it at $2,623,700.

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