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Single Family ResidenceResidential
$320,101$387 / 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 96How 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

306 ONSET AVE

WAREHAM, MA 02571
2
Beds
1
Baths
828 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1910
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

$320K
$307K low$333K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,440 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$285,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$99,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$185,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$273,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$354,412

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.67 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.80%
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.Ranch
CountyPLYMOUTH
Lot (acres)The size of the land the home sits on, from county records.0.23
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
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.

H
Wareham High SchoolD
High · Grades 9–12 · 2.7 mi
M
Wareham Middle SchoolC-
Middle · Grades 5–8 · 3.0 mi
E
John W. Decas Elementary
Elementary · Grades KG–2 · 4.4 mi

District: Wareham School District

Neighborhood · ZIP 02571These 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.144
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.91
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.58

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.81%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.22%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.10,755
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.386 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$74,919
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$99,418
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.49 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

306 Onset Ave 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 96% of homes in Plymouth County
  • Smaller than 95% of homes in Plymouth County
  • Has a smaller lot than 75% of homes in Plymouth County
  • Older than 89% of homes in Wareham 02571

What homes are worth in Wareham 02571

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

This home
$268K$1.2M

This home is worth more than 8% of homes in Wareham 02571.

How it measures up in Wareham 02571

The dot is this home. The mark in the middle is the typical home in Wareham 02571.

Estimated value$320,101
CheaperTypical $465,572Pricier

Pricier than 8% of homes nearby

Price per ft²$387
CheaperTypical $396Pricier

Pricier than 47% of homes nearby

Living area828 ft²
SmallerTypical 1,224 ft²Bigger

Bigger than 18% of homes nearby

Lot size0.23 ac
SmallerTypical 0.23 acBigger

Bigger than 50% of homes nearby

Year built1910
OlderTypical 1951Newer

Newer than 11% of homes nearby

How 306 Onset Ave ranks against every home in each area.
MeasureThis homeWareham 02571Plymouth County
Estimated valuepricier than$320,1018% of homes4% of homes
Price per ft²pricier than$38747% of homes49% of homes
Living areabigger than828 ft²18% of homes5% of homes
Lot sizebigger than0.23 ac50% of homes25% of homes
Year builtnewer than191011% of homes12% of homes

About 306 Onset Ave

How much is 306 Onset Ave, Wareham, MA worth?

The TopHap Estimate for 306 Onset Ave, Wareham, MA is $320,101 as of Sep 24, 2026. The likely range is $307,411 to $332,791. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 306 Onset Ave, Wareham, MA last sell?

306 Onset Ave, Wareham, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 306 Onset Ave, Wareham, MA?

306 Onset Ave, Wareham, MA has 2 bedrooms, 1 bathrooms, 828 square feet of living space and a 0.23-acre lot.

When was 306 Onset Ave, Wareham, MA built?

306 Onset Ave, Wareham, MA was built in 1910, making it 116 years old. It is a ranch home. The building has 1 story.

What schools serve 306 Onset Ave, Wareham, MA?

306 Onset Ave, Wareham, MA is assigned to Wareham High School (high), rated D; Wareham Middle School (middle), rated C-; John W. Decas Elementary (elementary). All sit in Wareham School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 306 Onset Ave, Wareham, MA compare to other homes in Wareham 02571?

Among the 6,210 homes in Wareham 02571, it is worth more than 8% of them ($320,101 against a typical $465,572), its price per square foot is higher than 47% of them ($387 against a typical $396), it is bigger than 18% of them (828 ft² against a typical 1,224 ft²), its lot is bigger than 50% of them (0.23 ac against a typical 0.23 ac) and it is newer than 11% of them (1910 against a typical 1951). Measured against all of Plymouth County, it is worth more than 4% 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 306 Onset Ave, Wareham, MA?

The 2026 property tax bill for 306 Onset Ave, Wareham, MA was $2,440. The county assessed it at $285,000.

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