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Single Family ResidenceResidential
$672,934$363 / 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 91How 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

21 CARLTON ST

HUDSON, MA 01749
3
Beds
2
Baths
1,853 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.
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
1978
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

$673K
$614K low$732K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,153 (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.$587,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$167,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$419,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$545,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$666,615

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
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.24
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
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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.

M
David J. Quinn Middle SchoolC-
Middle · Grades 5–7 · 0.7 mi
E
Mulready Elementary SchoolB-
Elementary · Grades PK–4 · 0.8 mi
H
Hudson High SchoolC
High · Grades 8–12 · 1.6 mi

District: Hudson School District

Neighborhood · ZIP 01749These 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.102
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.103
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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.29%
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.20,357
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,766 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$107,752
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$128,047
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.48 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

21 Carlton 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 more than 66% of homes in Hudson 01749
  • Costs less per square foot than 77% of homes in Middlesex County
  • Bigger than 65% of homes in Hudson 01749
  • Has a smaller lot than 84% of homes in Hudson 01749
  • Newer than 70% of homes in Middlesex County

What homes are worth in Hudson 01749

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

This home
$258K$1.1M

This home is worth more than 66% of homes in Hudson 01749.

How it measures up in Hudson 01749

The dot is this home. The mark in the middle is the typical home in Hudson 01749.

Estimated value$672,934
CheaperTypical $598,688Pricier

Pricier than 66% of homes nearby

Price per ft²$363
CheaperTypical $374Pricier

Pricier than 45% of homes nearby

Living area1,853 ft²
SmallerTypical 1,598 ft²Bigger

Bigger than 65% of homes nearby

Lot size0.24 ac
SmallerTypical 0.43 acBigger

Bigger than 16% of homes nearby

Year built1978
OlderTypical 1967Newer

Newer than 59% of homes nearby

How 21 Carlton St ranks against every home in each area.
MeasureThis homeHudson 01749Middlesex County
Estimated valuepricier than$672,93466% of homes35% of homes
Price per ft²pricier than$36345% of homes23% of homes
Living areabigger than1,853 ft²65% of homes51% of homes
Lot sizebigger than0.24 ac16% of homes42% of homes
Year builtnewer than197859% of homes70% of homes

About 21 Carlton St

How much is 21 Carlton St, Hudson, MA worth?

The TopHap Estimate for 21 Carlton St, Hudson, MA is $672,934 as of Sep 24, 2026. The likely range is $613,707 to $732,161. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Carlton St, Hudson, MA last sell?

21 Carlton St, Hudson, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Carlton St, Hudson, MA?

21 Carlton St, Hudson, MA has 3 bedrooms, 2 bathrooms, 1,853 square feet of living space and a 0.24-acre lot.

When was 21 Carlton St, Hudson, MA built?

21 Carlton St, Hudson, MA was built in 1978, making it 48 years old. It is a cape cod home. The building has 2 stories.

What schools serve 21 Carlton St, Hudson, MA?

21 Carlton St, Hudson, MA is assigned to David J. Quinn Middle School (middle), rated C-; Mulready Elementary School (elementary), rated B-; Hudson High School (high), rated C. All sit in Hudson School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Carlton St, Hudson, MA compare to other homes in Hudson 01749?

Among the 6,463 homes in Hudson 01749, it is worth more than 66% of them ($672,934 against a typical $598,688), its price per square foot is higher than 45% of them ($363 against a typical $374), it is bigger than 65% of them (1,853 ft² against a typical 1,598 ft²), its lot is bigger than 16% of them (0.24 ac against a typical 0.43 ac) and it is newer than 59% of them (1978 against a typical 1967). Measured against all of Middlesex County, it is worth more than 35% 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 21 Carlton St, Hudson, MA?

The 2025 property tax bill for 21 Carlton St, Hudson, MA was $8,153. The county assessed it at $587,400.

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