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Single Family ResidenceResidential
$414,423$242 / 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 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $280,000 on Dec 1, 2020

1099 MASON RD

ASHBY, MA 01431
4
Beds
4.5
Baths
1,716 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.
1 ac
Lot SizeThe size of the land the home sits on, from county records.
1975
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.

Valuation

$414K
$391K low$438K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$280,000 · Dec 1, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,816 (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.$305,600 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$64,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$241,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$309,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$447,678

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.42
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
20
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
56
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
95
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
39
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.minimal

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
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyMIDDLESEX
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1979
Lot (acres)The size of the land the home sits on, from county records.1.00
ConstructionThe main material the home's frame and walls are built from.Concrete
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
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
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.

Foreclosure Filings(1)

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 · 2.4 mi
M
Hawthorne Brook Middle SchoolC
Middle · Grades 5–8 · 5.3 mi
H
North Middlesex Regional High SchoolB
High · Grades 9–12 · 7.8 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

1099 Mason Rd 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 Middlesex County
  • Costs less per square foot than 98% of homes in Middlesex County
  • Has a smaller lot than 80% of homes in Ashby 01431
  • Newer than 68% of homes in Middlesex County

What homes are worth in Ashby 01431

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

This home
$185K$818K

This home is worth more than 39% of homes in Ashby 01431.

How it measures up in Ashby 01431

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

Estimated value$414,423
CheaperTypical $454,380Pricier

Pricier than 39% of homes nearby

Price per ft²$242
CheaperTypical $259Pricier

Pricier than 38% of homes nearby

Living area1,716 ft²
SmallerTypical 1,750 ft²Bigger

Bigger than 48% of homes nearby

Lot size1 ac
SmallerTypical 2.09 acBigger

Bigger than 20% of homes nearby

Year built1975
OlderTypical 1972Newer

Newer than 52% of homes nearby

How 1099 Mason Rd ranks against every home in each area.
MeasureThis homeAshby 01431Middlesex County
Estimated valuepricier than$414,42339% of homes8% of homes
Price per ft²pricier than$24238% of homes2% of homes
Living areabigger than1,716 ft²48% of homes45% of homes
Lot sizebigger than1 ac20% of homes79% of homes
Year builtnewer than197552% of homes68% of homes

About 1099 Mason Rd

How much is 1099 Mason Rd, Ashby, MA worth?

The TopHap Estimate for 1099 Mason Rd, Ashby, MA is $414,423 as of Oct 21, 2026. The likely range is $390,758 to $438,088. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1099 Mason Rd, Ashby, MA last sell?

1099 Mason Rd, Ashby, MA last sold on Dec 1, 2020 for $280,000, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 1099 Mason Rd, Ashby, MA?

1099 Mason Rd, Ashby, MA has 4 bedrooms, 4.5 bathrooms, 1,716 square feet of living space and a 1.00-acre lot.

When was 1099 Mason Rd, Ashby, MA built?

1099 Mason Rd, Ashby, MA was built in 1975, making it 51 years old. It is a conventional home. The building has 2 stories.

What schools serve 1099 Mason Rd, Ashby, MA?

1099 Mason Rd, 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 1099 Mason Rd, Ashby, MA compare to other homes in Ashby 01431?

Among the 1,215 homes in Ashby 01431, it is worth more than 39% of them ($414,423 against a typical $454,380), its price per square foot is higher than 38% of them ($242 against a typical $259), it is bigger than 48% of them (1,716 ft² against a typical 1,750 ft²), its lot is bigger than 20% of them (1 ac against a typical 2.09 ac) and it is newer than 52% of them (1975 against a typical 1972). Measured against all of Middlesex County, it is worth more than 8% 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 1099 Mason Rd, Ashby, MA?

The 2026 property tax bill for 1099 Mason Rd, Ashby, MA was $4,816. The county assessed it at $305,600.

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