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Single Family ResidenceResidential
$484,069$976 / 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 93How 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

18 ISLAND ST

BRANT ROCK, MA 02020
1
Beds
1
Baths
496 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.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1925
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

$484K
$451K low$517K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,288 (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.$433,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$319,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$113,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$688,750

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.83 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.83%
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.Cottage
CountyPLYMOUTH
Lot (acres)The size of the land the home sits on, from county records.0.18
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.Hot Water
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(3)

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
Governor Edward Winslow SchoolB+
Elementary · Grades KG–5 · 1.6 mi
M
Furnace Brook Middle SchoolB-
Middle · Grades 6–8 · 5.2 mi
H
Marshfield High SchoolA-
High · Grades 9–12 · 5.4 mi

District: Marshfield School District

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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

18 Island 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 87% of homes in ZIP 02020
  • Among the highest price per square foot in Plymouth County
  • Among the smallest homes in Plymouth County
  • Has a smaller lot than 81% of homes in Plymouth County
  • Older than 83% of homes in Plymouth County

What homes are worth in ZIP 02020

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

This home
$378K$1.7M

This home is worth more than 13% of homes in ZIP 02020.

How it measures up in ZIP 02020

The dot is this home. The mark in the middle is the typical home in ZIP 02020.

Estimated value$484,069
CheaperTypical $725,559Pricier

Pricier than 13% of homes nearby

Price per ft²$976
CheaperTypical $578Pricier

Pricier than 94% of homes nearby

Living area496 ft²
SmallerTypical 1,227 ft²Bigger

Bigger than 3% of homes nearby

Lot size0.18 ac
SmallerTypical 0.11 acBigger

Bigger than 76% of homes nearby

Year built1925
OlderTypical 1938Newer

Newer than 33% of homes nearby

How 18 Island St ranks against every home in each area.
MeasureThis homeZIP 02020Plymouth County
Estimated valuepricier than$484,06913% of homes22% of homes
Price per ft²pricier than$97694% of homesalmost all homes
Living areabigger than496 ft²3% of homesalmost no homes
Lot sizebigger than0.18 ac76% of homes19% of homes
Year builtnewer than192533% of homes17% of homes

About 18 Island St

How much is 18 Island St, Brant Rock, MA worth?

The TopHap Estimate for 18 Island St, Brant Rock, MA is $484,069 as of Sep 24, 2026. The likely range is $451,245 to $516,893. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Island St, Brant Rock, MA last sell?

18 Island St, Brant Rock, MA last sold on Sep 19, 2006, according to the county's recorded deed.

How big is 18 Island St, Brant Rock, MA?

18 Island St, Brant Rock, MA has 1 bedrooms, 1 bathrooms, 496 square feet of living space and a 0.18-acre lot.

When was 18 Island St, Brant Rock, MA built?

18 Island St, Brant Rock, MA was built in 1925, making it 101 years old. It is a cottage home. The building has 1 story.

What schools serve 18 Island St, Brant Rock, MA?

18 Island St, Brant Rock, MA is assigned to Governor Edward Winslow School (elementary), rated B+; Furnace Brook Middle School (middle), rated B-; Marshfield High School (high), rated A-. All sit in Marshfield School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18 Island St, Brant Rock, MA compare to other homes in ZIP 02020?

Among the 203 homes in ZIP 02020, it is worth more than 13% of them ($484,069 against a typical $725,559), its price per square foot is higher than 94% of them ($976 against a typical $578), it is bigger than 3% of them (496 ft² against a typical 1,227 ft²), its lot is bigger than 76% of them (0.18 ac against a typical 0.11 ac) and it is newer than 33% of them (1925 against a typical 1938). Measured against all of Plymouth County, it is worth more than 22% 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 18 Island St, Brant Rock, MA?

The 2025 property tax bill for 18 Island St, Brant Rock, MA was $4,288. The county assessed it at $433,100.

More homes on Island St

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Assigned schools

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