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Single Family ResidenceResidential
$697,164$445 / 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
Last sold for $213,750 on Oct 2, 1989

23 SPRING ST

SUDBURY, MA 01776
3
Beds
1.5
Baths
1,568 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.
0.48 ac
Lot SizeThe size of the land the home sits on, from county records.
1969
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$697K
$636K low$758K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$213,750 · Oct 2, 1989

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,500 (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.$648,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$384,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$264,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$851,200

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.0.48
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.Radiant
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

M
Ephraim Curtis Middle SchoolA
Middle · Grades 6–8 · 0.9 mi
E
Peter NoyesA
Elementary · Grades PK–5 · 2.2 mi
H
Lincoln-Sudbury Regional High SchoolA
High · Grades 9–12 · 2.8 mi

District: Sudbury School District

Neighborhood · ZIP 01776These 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.14
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 100.67

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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.38%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.1.5%
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.19,212
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.791 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$218,626
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$263,426
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

23 Spring 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 92% of homes in Sudbury 01776
  • Smaller than 84% of homes in Sudbury 01776
  • Has a smaller lot than 91% of homes in Sudbury 01776

What homes are worth in Sudbury 01776

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

This home
$588K$2.3M

This home is worth more than 8% of homes in Sudbury 01776.

How it measures up in Sudbury 01776

The dot is this home. The mark in the middle is the typical home in Sudbury 01776.

Estimated value$697,164
CheaperTypical $1,118,508Pricier

Pricier than 8% of homes nearby

Price per ft²$445
CheaperTypical $460Pricier

Pricier than 41% of homes nearby

Living area1,568 ft²
SmallerTypical 2,476 ft²Bigger

Bigger than 16% of homes nearby

Lot size0.48 ac
SmallerTypical 0.95 acBigger

Bigger than 9% of homes nearby

Year built1969
OlderTypical 1971Newer

Newer than 46% of homes nearby

How 23 Spring St ranks against every home in each area.
MeasureThis homeSudbury 01776Middlesex County
Estimated valuepricier than$697,1648% of homes39% of homes
Price per ft²pricier than$44541% of homes45% of homes
Living areabigger than1,568 ft²16% of homes37% of homes
Lot sizebigger than0.48 ac9% of homes63% of homes
Year builtnewer than196946% of homes63% of homes

About 23 Spring St

How much is 23 Spring St, Sudbury, MA worth?

The TopHap Estimate for 23 Spring St, Sudbury, MA is $697,164 as of Sep 24, 2026. The likely range is $636,409 to $757,919. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 23 Spring St, Sudbury, MA last sell?

23 Spring St, Sudbury, MA last sold on Oct 2, 1989 for $213,750, according to the county's recorded deed.

How big is 23 Spring St, Sudbury, MA?

23 Spring St, Sudbury, MA has 3 bedrooms, 1.5 bathrooms, 1,568 square feet of living space and a 0.48-acre lot.

When was 23 Spring St, Sudbury, MA built?

23 Spring St, Sudbury, MA was built in 1969, making it 57 years old. It is a cape cod home. The building has 2 stories.

What schools serve 23 Spring St, Sudbury, MA?

23 Spring St, Sudbury, MA is assigned to Ephraim Curtis Middle School (middle), rated A; Peter Noyes (elementary), rated A; Lincoln-Sudbury Regional High School (high), rated A. All sit in Sudbury School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 23 Spring St, Sudbury, MA compare to other homes in Sudbury 01776?

Among the 6,101 homes in Sudbury 01776, it is worth more than 8% of them ($697,164 against a typical $1,118,508), its price per square foot is higher than 41% of them ($445 against a typical $460), it is bigger than 16% of them (1,568 ft² against a typical 2,476 ft²), its lot is bigger than 9% of them (0.48 ac against a typical 0.95 ac) and it is newer than 46% of them (1969 against a typical 1971). Measured against all of Middlesex County, it is worth more than 39% 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 23 Spring St, Sudbury, MA?

The 2025 property tax bill for 23 Spring St, Sudbury, MA was $9,500. The county assessed it at $648,900.

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