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Single Family ResidenceResidential
$493,772$301 / 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 89How 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

671 OLD BASS RIVER RD

DENNIS, MA 02638
3
Beds
3.5
Baths
1,638 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.
0.84 ac
Lot SizeThe size of the land the home sits on, from county records.
2003
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$494K
$441K low$547K high
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.$373,772
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$299,018
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.28%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$120,000
FLEET NATIONAL BANK · recorded Sep 16, 2003

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,312 (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.$764,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$238,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$525,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$643,435

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.34
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
8
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.
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.minimal

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
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.2007
Lot (acres)The size of the land the home sits on, from county records.0.84
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
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(5)

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
Dennis Yarmouth Regional High SchoolC
High · Grades 9–12 · 3.5 mi
E
Ezra H. Baker Innovation SchoolB
Elementary · Grades PK–3 · 4.1 mi
M
Mattacheese Middle SchoolB-
Middle · Grades 6–8 · 5.1 mi

District: Dennis-Yarmouth School District

Neighborhood · ZIP 02638These 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.106
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 100.48

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.53%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.3,396
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.480 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$106,812
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$121,835
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

671 Old Bass River Rd 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 93% of homes in Dennis 02638
  • Among the lowest price per square foot in Dennis 02638
  • Has a bigger lot than 84% of homes in Dennis 02638
  • Newer than 91% of homes in Barnstable County

What homes are worth in Dennis 02638

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

This home
$377K$3.4M

This home is worth more than 7% of homes in Dennis 02638.

How it measures up in Dennis 02638

The dot is this home. The mark in the middle is the typical home in Dennis 02638.

Estimated value$493,772
CheaperTypical $988,515Pricier

Pricier than 7% of homes nearby

Price per ft²$301
CheaperTypical $602Pricier

Cheaper than almost all homes nearby

Living area1,638 ft²
SmallerTypical 1,660 ft²Bigger

Bigger than 49% of homes nearby

Lot size0.84 ac
SmallerTypical 0.43 acBigger

Bigger than 84% of homes nearby

Year built2003
OlderTypical 1976Newer

Newer than 90% of homes nearby

How 671 Old Bass River Rd ranks against every home in each area.
MeasureThis homeDennis 02638Barnstable County
Estimated valuepricier than$493,7727% of homes11% of homes
Price per ft²pricier than$301almost no homes3% of homes
Living areabigger than1,638 ft²49% of homes54% of homes
Lot sizebigger than0.84 ac84% of homes79% of homes
Year builtnewer than200390% of homes91% of homes

About 671 Old Bass River Rd

How much is 671 Old Bass River Rd, Dennis, MA worth?

The TopHap Estimate for 671 Old Bass River Rd, Dennis, MA is $493,772 as of Jul 14, 2026. The likely range is $440,969 to $546,575. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 671 Old Bass River Rd, Dennis, MA last sell?

671 Old Bass River Rd, Dennis, MA last sold on May 26, 2016, according to the county's recorded deed.

How big is 671 Old Bass River Rd, Dennis, MA?

671 Old Bass River Rd, Dennis, MA has 3 bedrooms, 3.5 bathrooms, 1,638 square feet of living space and a 0.84-acre lot.

When was 671 Old Bass River Rd, Dennis, MA built?

671 Old Bass River Rd, Dennis, MA was built in 2003, making it 23 years old. It is a cape cod home. The building has 2 stories.

What schools serve 671 Old Bass River Rd, Dennis, MA?

671 Old Bass River Rd, Dennis, MA is assigned to Dennis Yarmouth Regional High School (high), rated C; Ezra H. Baker Innovation School (elementary), rated B; 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 671 Old Bass River Rd, Dennis, MA compare to other homes in Dennis 02638?

Among the 3,456 homes in Dennis 02638, it is worth more than 7% of them ($493,772 against a typical $988,515), its price per square foot is higher than almost none of them ($301 against a typical $602), it is bigger than 49% of them (1,638 ft² against a typical 1,660 ft²), its lot is bigger than 84% of them (0.84 ac against a typical 0.43 ac) and it is newer than 90% of them (2003 against a typical 1976). Measured against all of Barnstable County, it is worth more than 11% 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 671 Old Bass River Rd, Dennis, MA?

The 2025 property tax bill for 671 Old Bass River Rd, Dennis, MA was $3,312. The county assessed it at $764,800.

Closest homes

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Assigned schools

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