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Single Family ResidenceResidential
$5,145,833$1,771 / 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 92How 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 $3,999,000 on Jan 21, 2022

28 RIVER LN

DENNIS PORT, MA 02639
4
Beds
4
Baths
2,906 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.
6.96 ac
Lot SizeThe size of the land the home sits on, from county records.
1985
Year BuiltThe year the home was originally built, according to county records.
3
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

$5.1M
$4.7M low$5.6M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$3,999,000 · Jan 21, 2022
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$5,145,833
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$4,116,666

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$16,763 (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.$3,871,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$3,021,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$850,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$3,531,245

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.53
100
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
4
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
50
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
84
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
29
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.97 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.93%
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.Contemporary
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.1999
Lot (acres)The size of the land the home sits on, from county records.6.96
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.No Foundation
RoofThe main material covering the roof, such as asphalt shingle or tile.Wood Shingle
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
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(11)

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 · 1.1 mi
H
Dennis Yarmouth Regional High SchoolC
High · Grades 9–12 · 2.6 mi
M
Mattacheese Middle SchoolB-
Middle · Grades 6–8 · 4.8 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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

28 River 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.

  • Among the most valuable homes in Dennis Port 02639
  • Among the highest price per square foot in Dennis Port 02639
  • Bigger than 98% of homes in Dennis Port 02639
  • Among the largest lots in Dennis Port 02639
  • Newer than 92% 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
$158K$1.4M

This home is worth more than almost all 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$5,145,833
CheaperTypical $541,905Pricier

Pricier than almost all homes nearby

Price per ft²$1771
CheaperTypical $568Pricier

Pricier than almost all homes nearby

Living area2,906 ft²
SmallerTypical 960 ft²Bigger

Bigger than 98% of homes nearby

Lot size6.96 ac
SmallerTypical 0.18 acBigger

Bigger than almost all homes nearby

Year built1985
OlderTypical 1960Newer

Newer than 92% of homes nearby

How 28 River Ln ranks against every home in each area.
MeasureThis homeDennis Port 02639Barnstable County
Estimated valuepricier than$5,145,833almost all homesalmost all homes
Price per ft²pricier than$1771almost all homesalmost all homes
Living areabigger than2,906 ft²98% of homes90% of homes
Lot sizebigger than6.96 acalmost all homesalmost all homes
Year builtnewer than198592% of homes69% of homes

About 28 River Ln

How much is 28 River Ln, Dennis Port, MA worth?

The TopHap Estimate for 28 River Ln, Dennis Port, MA is $5,145,833 as of Jul 14, 2026. The likely range is $4,718,197 to $5,573,469. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 28 River Ln, Dennis Port, MA last sell?

28 River Ln, Dennis Port, MA last sold on Jan 21, 2022 for $3,999,000, according to the county's recorded deed. TopHap holds 7 recorded sales for this parcel.

How big is 28 River Ln, Dennis Port, MA?

28 River Ln, Dennis Port, MA has 4 bedrooms, 4 bathrooms, 2,906 square feet of living space and a 6.96-acre lot.

When was 28 River Ln, Dennis Port, MA built?

28 River Ln, Dennis Port, MA was built in 1985, making it 41 years old. It is a contemporary home. The building has 3 stories.

What schools serve 28 River Ln, Dennis Port, MA?

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

How does 28 River Ln, 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 almost all of them ($5,145,833 against a typical $541,905), its price per square foot is higher than almost all of them ($1771 against a typical $568), it is bigger than 98% of them (2,906 ft² against a typical 960 ft²), its lot is bigger than almost all of them (6.96 ac against a typical 0.18 ac) and it is newer than 92% of them (1985 against a typical 1960). Measured against all of Barnstable 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 28 River Ln, Dennis Port, MA?

The 2025 property tax bill for 28 River Ln, Dennis Port, MA was $16,763. The county assessed it at $3,871,300.

Closest homes

More homes in Dennis Port 02639

Assigned schools

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