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Single Family ResidenceResidential
$478,035$383 / 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 Sep 24, 2026
Last sold for $97,816 on May 31, 2000

186 UNION ST

SOUTH WEYMOUTH, MA 02190
1.5
Baths
1,248 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.
0.38 ac
Lot SizeThe size of the land the home sits on, from county records.
1823
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$478K
$440K low$516K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$97,816 · May 31, 2000

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,978 (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.$492,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$217,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$275,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$485,640

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
CountyNORFOLK
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.1960
Lot (acres)The size of the land the home sits on, from county records.0.38
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
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
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(4)

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
Thomas W. Hamilton Primary SchoolC+
Elementary · Grades KG–5 · 0.5 mi
H
Weymouth High SchoolC+
High · Grades 9–12 · 0.8 mi

District: Weymouth School District

Neighborhood · ZIP 02190These 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.84
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.100
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.70

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.8%
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.19,738
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,573 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$111,816
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$125,397
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.47 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

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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

186 Union 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 88% of homes in Norfolk County
  • Costs less per square foot than 72% of homes in Norfolk County
  • Smaller than 75% of homes in Norfolk County
  • Among the oldest homes in South Weymouth 02190

What homes are worth in South Weymouth 02190

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

This home
$266K$1.1M

This home is worth more than 24% of homes in South Weymouth 02190.

How it measures up in South Weymouth 02190

The dot is this home. The mark in the middle is the typical home in South Weymouth 02190.

Estimated value$478,035
CheaperTypical $610,461Pricier

Pricier than 24% of homes nearby

Price per ft²$383
CheaperTypical $406Pricier

Pricier than 36% of homes nearby

Living area1,248 ft²
SmallerTypical 1,470 ft²Bigger

Bigger than 35% of homes nearby

Lot size0.38 ac
SmallerTypical 0.38 acBigger

Bigger than 50% of homes nearby

Year built1823
OlderTypical 1966Newer

Older than almost all homes nearby

How 186 Union St ranks against every home in each area.
MeasureThis homeSouth Weymouth 02190Norfolk County
Estimated valuepricier than$478,03524% of homes12% of homes
Price per ft²pricier than$38336% of homes28% of homes
Living areabigger than1,248 ft²35% of homes25% of homes
Lot sizebigger than0.38 ac50% of homes53% of homes
Year builtnewer than1823almost no homesalmost no homes

About 186 Union St

How much is 186 Union St, South Weymouth, MA worth?

The TopHap Estimate for 186 Union St, South Weymouth, MA is $478,035 as of Sep 24, 2026. The likely range is $440,016 to $516,054. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 186 Union St, South Weymouth, MA last sell?

186 Union St, South Weymouth, MA last sold on May 31, 2000 for $97,816, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 186 Union St, South Weymouth, MA?

186 Union St, South Weymouth, MA has 1.5 bathrooms, 1,248 square feet of living space and a 0.38-acre lot.

When was 186 Union St, South Weymouth, MA built?

186 Union St, South Weymouth, MA was built in 1823, making it 203 years old. It is a cape cod home. The building has 2 stories.

What schools serve 186 Union St, South Weymouth, MA?

186 Union St, South Weymouth, MA is assigned to Thomas W. Hamilton Primary School (elementary), rated C+; Weymouth High School (high), rated C+. All sit in Weymouth School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 186 Union St, South Weymouth, MA compare to other homes in South Weymouth 02190?

Among the 6,161 homes in South Weymouth 02190, it is worth more than 24% of them ($478,035 against a typical $610,461), its price per square foot is higher than 36% of them ($383 against a typical $406), it is bigger than 35% of them (1,248 ft² against a typical 1,470 ft²), its lot is bigger than 50% of them (0.38 ac against a typical 0.38 ac) and it is newer than almost none of them (1823 against a typical 1966). Measured against all of Norfolk County, it is worth more than 12% 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 186 Union St, South Weymouth, MA?

The 2025 property tax bill for 186 Union St, South Weymouth, MA was $4,978. The county assessed it at $492,900.

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