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Single Family ResidenceResidential
$961,233$405 / 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 Aug 30, 2026

18 SPRING ST

SUDBURY, MA 01776
3
Beds
3
Baths
2,376 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.
0.46 ac
Lot SizeThe size of the land the home sits on, from county records.
1953
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

$961K
$876K low$1M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,116 (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.$827,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$382,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$445,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,085,945

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.Colonial
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.46
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
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(5)

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

18 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 67% of homes in Sudbury 01776
  • Costs less per square foot than 81% of homes in Sudbury 01776
  • Bigger than 70% of homes in Middlesex County
  • Has a smaller lot than 92% of homes in Sudbury 01776
  • Older than 90% 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
$564K$2.3M

This home is worth more than 33% 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$961,233
CheaperTypical $1,124,959Pricier

Pricier than 33% of homes nearby

Price per ft²$405
CheaperTypical $465Pricier

Pricier than 19% of homes nearby

Living area2,376 ft²
SmallerTypical 2,480 ft²Bigger

Bigger than 46% of homes nearby

Lot size0.46 ac
SmallerTypical 0.95 acBigger

Bigger than 8% of homes nearby

Year built1953
OlderTypical 1971Newer

Newer than 10% of homes nearby

How 18 Spring St ranks against every home in each area.
MeasureThis homeSudbury 01776Middlesex County
Estimated valuepricier than$961,23333% of homes67% of homes
Price per ft²pricier than$40519% of homes34% of homes
Living areabigger than2,376 ft²46% of homes70% of homes
Lot sizebigger than0.46 ac8% of homes61% of homes
Year builtnewer than195310% of homes44% of homes

About 18 Spring St

How much is 18 Spring St, Sudbury, MA worth?

The TopHap Estimate for 18 Spring St, Sudbury, MA is $961,233 as of Aug 30, 2026. The likely range is $876,126 to $1,046,340. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Spring St, Sudbury, MA last sell?

18 Spring St, Sudbury, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 18 Spring St, Sudbury, MA?

18 Spring St, Sudbury, MA has 3 bedrooms, 3 bathrooms, 2,376 square feet of living space and a 0.46-acre lot.

When was 18 Spring St, Sudbury, MA built?

18 Spring St, Sudbury, MA was built in 1953, making it 73 years old. It is a colonial home. The building has 2 stories.

What schools serve 18 Spring St, Sudbury, MA?

18 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 18 Spring St, Sudbury, MA compare to other homes in Sudbury 01776?

Among the 6,101 homes in Sudbury 01776, it is worth more than 33% of them ($961,233 against a typical $1,124,959), its price per square foot is higher than 19% of them ($405 against a typical $465), it is bigger than 46% of them (2,376 ft² against a typical 2,480 ft²), its lot is bigger than 8% of them (0.46 ac against a typical 0.95 ac) and it is newer than 10% of them (1953 against a typical 1971). Measured against all of Middlesex County, it is worth more than 67% 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 18 Spring St, Sudbury, MA?

The 2025 property tax bill for 18 Spring St, Sudbury, MA was $12,116. The county assessed it at $827,600.

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