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Single Family ResidenceResidential
$577,703$309 / 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 95How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $364,000 on Sep 30, 2003

800 MASON RD

ASHBY, MA 01431
3
Beds
1.5
Baths
1,867 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.
3.82 ac
Lot SizeThe size of the land the home sits on, from county records.
1986
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

$578K
$551K low$605K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$364,000 · Sep 30, 2003
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$290,703
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$232,562
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.53%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$217,000
I-C FCU · R · recorded Nov 19, 2021
2nd MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$70,000
I-C FCU

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,440 (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.$488,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$79,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$408,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$703,475

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.19 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.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.Cape Cod
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.3.82
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.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.

E
Ashby Elementary SchoolB-
Elementary · Grades KG–4 · 1.9 mi
M
Hawthorne Brook Middle SchoolC-
Middle · Grades 5–8 · 5.2 mi
H
North Middlesex Regional High SchoolB-
High · Grades 9–12 · 7.7 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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

800 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 78% of homes in Middlesex County
  • Costs less per square foot than 91% of homes in Middlesex County
  • Has a bigger lot than 93% of homes in Middlesex County
  • Newer than 78% 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
$193K$825K

This home is worth more than 77% 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$577,703
CheaperTypical $469,200Pricier

Pricier than 77% of homes nearby

Price per ft²$309
CheaperTypical $272Pricier

Pricier than 76% of homes nearby

Living area1,867 ft²
SmallerTypical 1,764 ft²Bigger

Bigger than 55% of homes nearby

Lot size3.82 ac
SmallerTypical 2.1 acBigger

Bigger than 72% of homes nearby

Year built1986
OlderTypical 1972Newer

Newer than 64% of homes nearby

How 800 Mason Rd ranks against every home in each area.
MeasureThis homeAshby 01431Middlesex County
Estimated valuepricier than$577,70377% of homes22% of homes
Price per ft²pricier than$30976% of homes9% of homes
Living areabigger than1,867 ft²55% of homes52% of homes
Lot sizebigger than3.82 ac72% of homes93% of homes
Year builtnewer than198664% of homes78% of homes

About 800 Mason Rd

How much is 800 Mason Rd, Ashby, MA worth?

The TopHap Estimate for 800 Mason Rd, Ashby, MA is $577,703 as of Jul 14, 2026. The likely range is $550,891 to $604,515. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 800 Mason Rd, Ashby, MA last sell?

800 Mason Rd, Ashby, MA last sold on Sep 30, 2003 for $364,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 800 Mason Rd, Ashby, MA?

800 Mason Rd, Ashby, MA has 3 bedrooms, 1.5 bathrooms, 1,867 square feet of living space and a 3.82-acre lot.

When was 800 Mason Rd, Ashby, MA built?

800 Mason Rd, Ashby, MA was built in 1986, making it 40 years old. It is a cape cod home. The building has 2 stories.

What schools serve 800 Mason Rd, Ashby, MA?

800 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 800 Mason Rd, Ashby, MA compare to other homes in Ashby 01431?

Among the 1,214 homes in Ashby 01431, it is worth more than 77% of them ($577,703 against a typical $469,200), its price per square foot is higher than 76% of them ($309 against a typical $272), it is bigger than 55% of them (1,867 ft² against a typical 1,764 ft²), its lot is bigger than 72% of them (3.82 ac against a typical 2.1 ac) and it is newer than 64% of them (1986 against a typical 1972). Measured against all of Middlesex County, it is worth more than 22% 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 800 Mason Rd, Ashby, MA?

The 2025 property tax bill for 800 Mason Rd, Ashby, MA was $7,440. The county assessed it at $488,500.

Closest homes

More homes in Ashby 01431

Assigned schools

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