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Single Family ResidenceResidential
$650,395
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 94How 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 $413,500 on Feb 27, 2006

42 RIVER ST

HUDSON, MA 01749
0
Baths
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$650K
$609K low$692K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$413,500 · Feb 27, 2006

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,070 (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.$581,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$160,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$420,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$536,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$637,165

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.9 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.17
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(2)

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
C a FarleyB-
Elementary · Grades PK–4 · 0.6 mi
H
Hudson High SchoolC
High · Grades 8–12 · 0.9 mi
M
David J. Quinn Middle SchoolC
Middle · Grades 5–7 · 0.9 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

42 River 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 68% of homes in Middlesex County
  • Has a smaller lot than 93% of homes in Hudson 01749

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 63% 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$650,395
CheaperTypical $596,554Pricier

Pricier than 63% of homes nearby

Lot size0.17 ac
SmallerTypical 0.44 acBigger

Bigger than 7% of homes nearby

How 42 River St ranks against every home in each area.
MeasureThis homeHudson 01749Middlesex County
Estimated valuepricier than$650,39563% of homes32% of homes
Lot sizebigger than0.17 ac7% of homes29% of homes

About 42 River St

How much is 42 River St, Hudson, MA worth?

The TopHap Estimate for 42 River St, Hudson, MA is $650,395 as of Sep 24, 2026. The likely range is $609,087 to $691,703. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 42 River St, Hudson, MA last sell?

42 River St, Hudson, MA last sold on Feb 27, 2006 for $413,500, according to the county's recorded deed.

What schools serve 42 River St, Hudson, MA?

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

How does 42 River St, Hudson, MA compare to other homes in Hudson 01749?

Among the 6,463 homes in Hudson 01749, it is worth more than 63% of them ($650,395 against a typical $596,554) and its lot is bigger than 7% of them (0.17 ac against a typical 0.44 ac). Measured against all of Middlesex County, it is worth more than 32% 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 42 River St, Hudson, MA?

The 2025 property tax bill for 42 River St, Hudson, MA was $8,070. The county assessed it at $581,400.

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Assigned schools

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