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Duplex (2 Units, Any Combination)Residential
Last sold for $445,000 on Nov 10, 2004

21 RIO VISTA ST

NORTH BILLERICA, MA 01862
3
Beds
3
Baths
2,586 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.
1965
Year BuiltThe year the home was originally built, according to county records.
1
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.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$445,000 · Nov 10, 2004

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,891 (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.$679,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$310,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$366,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$717,200

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.Duplex Single
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
CoolingThe type of cooling or air conditioning in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(11)

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
Frederick J DutileB-
Elementary · Grades KG–4 · 1.3 mi
H
Billerica Memorial High SchoolC
High · Grades 8–12 · 1.9 mi
M
Marshall Middle SchoolB-
Middle · Grades 5–7 · 2.4 mi

District: Billerica School District

Neighborhood · ZIP 01862These 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.73
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.100
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.82

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.2%
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.11,579
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,235 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$117,720
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$134,267
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.46 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

21 Rio Vista 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 76% of homes in North Billerica 01862

How it measures up in North Billerica 01862

The dot is this home. The mark in the middle is the typical home in North Billerica 01862.

Living area2,586 ft²
SmallerTypical 1,968 ft²Bigger

Bigger than 76% of homes nearby

Lot size0.46 ac
SmallerTypical 0.58 acBigger

Bigger than 43% of homes nearby

Year built1965
OlderTypical 1970Newer

Newer than 40% of homes nearby

How 21 Rio Vista St ranks against every home in each area.
MeasureThis homeNorth Billerica 01862Middlesex County
Living areabigger than2,586 ft²76% of homes76% of homes
Lot sizebigger than0.46 ac43% of homes62% of homes
Year builtnewer than196540% of homes59% of homes

About 21 Rio Vista St

When did 21 Rio Vista St, North Billerica, MA last sell?

21 Rio Vista St, North Billerica, MA last sold on Nov 10, 2004 for $445,000, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 21 Rio Vista St, North Billerica, MA?

21 Rio Vista St, North Billerica, MA has 3 bedrooms, 3 bathrooms, 2,586 square feet of living space and a 0.46-acre lot.

When was 21 Rio Vista St, North Billerica, MA built?

21 Rio Vista St, North Billerica, MA was built in 1965, making it 61 years old. It is a duplex single home. The building has 1 story.

What schools serve 21 Rio Vista St, North Billerica, MA?

21 Rio Vista St, North Billerica, MA is assigned to Frederick J Dutile (elementary), rated B-; Billerica Memorial High School (high), rated C; Marshall Middle School (middle), rated B-. All sit in Billerica School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Rio Vista St, North Billerica, MA compare to other homes in North Billerica 01862?

Among the 2,975 homes in North Billerica 01862, it is bigger than 76% of them (2,586 ft² against a typical 1,968 ft²), its lot is bigger than 43% of them (0.46 ac against a typical 0.58 ac) and it is newer than 40% of them (1965 against a typical 1970). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 21 Rio Vista St, North Billerica, MA?

The 2026 property tax bill for 21 Rio Vista St, North Billerica, MA was $7,891. The county assessed it at $679,700.

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