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Single Family ResidenceResidential
$533,530$451 / 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 90How 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

311 SEA ST

DENNIS PORT, MA 02639
2
Beds
2
Baths
1,184 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.
0.25 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.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$534K
$481K low$586K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,115 (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.$488,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$131,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$357,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$571,235

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
CountyBARNSTABLE
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.1980
Lot (acres)The size of the land the home sits on, from county records.0.25
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
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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
Ezra H. Baker Innovation SchoolB-
Elementary · Grades PK–3 · 1.2 mi
H
Dennis Yarmouth Regional High SchoolD+
High · Grades 9–12 · 3.4 mi
M
Mattacheese Middle SchoolC-
Middle · Grades 6–8 · 5.9 mi

District: Dennis-Yarmouth School District

Neighborhood · ZIP 02639These 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.182
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.90
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.37%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.3,359
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,086 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$59,475
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$84,740
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

311 Sea 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.

  • Worth less than 82% of homes in Barnstable County
  • Costs less per square foot than 79% of homes in Dennis Port 02639
  • Smaller than 73% of homes in Barnstable County
  • Has a smaller lot than 76% of homes in Barnstable County
  • Newer than 77% of homes in Dennis Port 02639

What homes are worth in Dennis Port 02639

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

This home
$143K$1.5M

This home is worth more than 44% of homes in Dennis Port 02639.

How it measures up in Dennis Port 02639

The dot is this home. The mark in the middle is the typical home in Dennis Port 02639.

Estimated value$533,530
CheaperTypical $563,408Pricier

Pricier than 44% of homes nearby

Price per ft²$451
CheaperTypical $594Pricier

Pricier than 21% of homes nearby

Living area1,184 ft²
SmallerTypical 957 ft²Bigger

Bigger than 69% of homes nearby

Lot size0.25 ac
SmallerTypical 0.18 acBigger

Bigger than 72% of homes nearby

Year built1973
OlderTypical 1960Newer

Newer than 77% of homes nearby

How 311 Sea St ranks against every home in each area.
MeasureThis homeDennis Port 02639Barnstable County
Estimated valuepricier than$533,53044% of homes18% of homes
Price per ft²pricier than$45121% of homes36% of homes
Living areabigger than1,184 ft²69% of homes27% of homes
Lot sizebigger than0.25 ac72% of homes24% of homes
Year builtnewer than197377% of homes45% of homes

About 311 Sea St

How much is 311 Sea St, Dennis Port, MA worth?

The TopHap Estimate for 311 Sea St, Dennis Port, MA is $533,530 as of Sep 24, 2026. The likely range is $481,391 to $585,669. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 311 Sea St, Dennis Port, MA last sell?

311 Sea St, Dennis Port, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 311 Sea St, Dennis Port, MA?

311 Sea St, Dennis Port, MA has 2 bedrooms, 2 bathrooms, 1,184 square feet of living space and a 0.25-acre lot.

When was 311 Sea St, Dennis Port, MA built?

311 Sea St, Dennis Port, MA was built in 1973, making it 53 years old. It is a ranch home. The building has 1 story.

What schools serve 311 Sea St, Dennis Port, MA?

311 Sea St, Dennis Port, MA is assigned to Ezra H. Baker Innovation School (elementary), rated B-; Dennis Yarmouth Regional High School (high), rated D+; Mattacheese Middle School (middle), rated C-. All sit in Dennis-Yarmouth School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 311 Sea St, Dennis Port, MA compare to other homes in Dennis Port 02639?

Among the 4,259 homes in Dennis Port 02639, it is worth more than 44% of them ($533,530 against a typical $563,408), its price per square foot is higher than 21% of them ($451 against a typical $594), it is bigger than 69% of them (1,184 ft² against a typical 957 ft²), its lot is bigger than 72% of them (0.25 ac against a typical 0.18 ac) and it is newer than 77% of them (1973 against a typical 1960). Measured against all of Barnstable County, it is worth more than 18% 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 311 Sea St, Dennis Port, MA?

The 2025 property tax bill for 311 Sea St, Dennis Port, MA was $2,115. The county assessed it at $488,500.

More homes on Sea St

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