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Duplex (2 Units, Any Combination)Residential

818 MAIN ST

ASHBY, MA 01431
4
Beds
3.5
Baths
2,688 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.
1864
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,586 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$417,900 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$52,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$365,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$400,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$492,939

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Historical
CountyMIDDLESEX
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.Stone
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
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(10)

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
Ashby Elementary SchoolB-
Elementary · Grades KG–4 · 0.2 mi
M
Hawthorne Brook Middle SchoolC
Middle · Grades 5–8 · 6.0 mi
H
North Middlesex Regional High SchoolB
High · Grades 9–12 · 8.2 mi

District: North Middlesex School District

Neighborhood · ZIP 01431These 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.92
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.93
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.74

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.9%
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.3,266
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.136 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$108,151
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$136,531
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.49 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

818 Main 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.

  • Bigger than 88% of homes in Ashby 01431
  • Has a smaller lot than 97% of homes in Ashby 01431
  • Older than 98% of homes in Middlesex County

How it measures up in Ashby 01431

The dot is this home. The mark in the middle is the typical home in Ashby 01431.

Living area2,688 ft²
SmallerTypical 1,752 ft²Bigger

Bigger than 88% of homes nearby

Lot size0.23 ac
SmallerTypical 2.08 acBigger

Bigger than 3% of homes nearby

Year built1864
OlderTypical 1972Newer

Newer than 7% of homes nearby

How 818 Main St ranks against every home in each area.
MeasureThis homeAshby 01431Middlesex County
Living areabigger than2,688 ft²88% of homes79% of homes
Lot sizebigger than0.23 ac3% of homes40% of homes
Year builtnewer than18647% of homes2% of homes

About 818 Main St

When did 818 Main St, Ashby, MA last sell?

818 Main St, Ashby, MA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 818 Main St, Ashby, MA?

818 Main St, Ashby, MA has 4 bedrooms, 3.5 bathrooms, 2,688 square feet of living space and a 0.23-acre lot.

When was 818 Main St, Ashby, MA built?

818 Main St, Ashby, MA was built in 1864, making it 162 years old. It is a historical home. The building has 2 stories.

What schools serve 818 Main St, Ashby, MA?

818 Main St, Ashby, MA is assigned to Ashby Elementary School (elementary), rated B-; Hawthorne Brook Middle School (middle), rated C; North Middlesex Regional High School (high), rated B. All sit in North Middlesex School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 818 Main St, Ashby, MA compare to other homes in Ashby 01431?

Among the 1,215 homes in Ashby 01431, it is bigger than 88% of them (2,688 ft² against a typical 1,752 ft²), its lot is bigger than 3% of them (0.23 ac against a typical 2.08 ac) and it is newer than 7% of them (1864 against a typical 1972). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 818 Main St, Ashby, MA?

The 2026 property tax bill for 818 Main St, Ashby, MA was $6,586. The county assessed it at $417,900.

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