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Single Family ResidenceResidential
$538,308$360 / 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 95How 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 $210,000 on Feb 12, 2009

309 UNION AVE

FRAMINGHAM, MA 01702
3
Beds
1.5
Baths
1,496 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1920
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$538K
$512K low$565K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$210,000 · Feb 12, 2009

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,083 (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.$509,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$261,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$248,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$467,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$2,342,035

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.Conventional
CountyMIDDLESEX
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.1978
Lot (acres)The size of the land the home sits on, from county records.0.23
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
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
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(8)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(3)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Miriam F Mccarthy SchoolC
Elementary · Grades PK–5 · 0.4 mi
M
Fuller Middle SchoolC+
Middle · Grades 6–8 · 0.6 mi
H
Framingham High SchoolC+
High · Grades 9–12 · 2.4 mi

District: Framingham School District

Neighborhood · ZIP 01702These 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.137
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.65

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.13%
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.38,671
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,396 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$80,325
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$109,091
Average tempThe average temperature here across a full year.49°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.58%

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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

309 Union 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 81% of homes in Middlesex County
  • Costs less per square foot than 78% of homes in Middlesex County
  • Smaller than 66% of homes in Middlesex County
  • Older than 77% of homes in Framingham 01702

What homes are worth in Framingham 01702

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

This home
$141K$1.2M

This home is worth more than 48% of homes in Framingham 01702.

How it measures up in Framingham 01702

The dot is this home. The mark in the middle is the typical home in Framingham 01702.

Estimated value$538,308
CheaperTypical $548,840Pricier

Pricier than 48% of homes nearby

Price per ft²$360
CheaperTypical $376Pricier

Pricier than 40% of homes nearby

Living area1,496 ft²
SmallerTypical 1,470 ft²Bigger

Bigger than 51% of homes nearby

Lot size0.23 ac
SmallerTypical 0.3 acBigger

Bigger than 41% of homes nearby

Year built1920
OlderTypical 1957Newer

Newer than 23% of homes nearby

How 309 Union Ave ranks against every home in each area.
MeasureThis homeFramingham 01702Middlesex County
Estimated valuepricier than$538,30848% of homes19% of homes
Price per ft²pricier than$36040% of homes22% of homes
Living areabigger than1,496 ft²51% of homes34% of homes
Lot sizebigger than0.23 ac41% of homes40% of homes
Year builtnewer than192023% of homes25% of homes

About 309 Union Ave

How much is 309 Union Ave, Framingham, MA worth?

The TopHap Estimate for 309 Union Ave, Framingham, MA is $538,308 as of Sep 24, 2026. The likely range is $511,723 to $564,893. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 309 Union Ave, Framingham, MA last sell?

309 Union Ave, Framingham, MA last sold on Feb 12, 2009 for $210,000, according to the county's recorded deed. TopHap holds 6 recorded sales for this parcel.

How big is 309 Union Ave, Framingham, MA?

309 Union Ave, Framingham, MA has 3 bedrooms, 1.5 bathrooms, 1,496 square feet of living space and a 0.23-acre lot.

When was 309 Union Ave, Framingham, MA built?

309 Union Ave, Framingham, MA was built in 1920, making it 106 years old. It is a conventional home. The building has 2 stories.

What schools serve 309 Union Ave, Framingham, MA?

309 Union Ave, Framingham, MA is assigned to Miriam F Mccarthy School (elementary), rated C; Fuller Middle School (middle), rated C+; Framingham High School (high), rated C+. All sit in Framingham School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 309 Union Ave, Framingham, MA compare to other homes in Framingham 01702?

Among the 7,370 homes in Framingham 01702, it is worth more than 48% of them ($538,308 against a typical $548,840), its price per square foot is higher than 40% of them ($360 against a typical $376), it is bigger than 51% of them (1,496 ft² against a typical 1,470 ft²), its lot is bigger than 41% of them (0.23 ac against a typical 0.3 ac) and it is newer than 23% of them (1920 against a typical 1957). Measured against all of Middlesex County, it is worth more than 19% 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 309 Union Ave, Framingham, MA?

The 2025 property tax bill for 309 Union Ave, Framingham, MA was $6,083. The county assessed it at $509,500.

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