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Single Family ResidenceResidential
$4,450,000$659 / 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 Sep 24, 2026
Last sold for $2,820,000 on Oct 29, 2015

21 DOUGLAS RD

LEXINGTON, MA 02420
5
Beds
6.5
Baths
6,749 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.
0.69 ac
Lot SizeThe size of the land the home sits on, from county records.
2008
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
12
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

$4.5M
$4.2M low$4.7M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$2,820,000 · Oct 29, 2015

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$47,746 (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.$3,904,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$960,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$2,944,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$4,382,445

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.Mansion
CountyMIDDLESEX
Lot (acres)The size of the land the home sits on, from county records.0.69
RoofThe main material covering the roof, such as asphalt shingle or tile.Shingle
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
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(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
Fiske Elementary SchoolA
Elementary · Grades KG–5 · 1.1 mi
M
William Diamond Middle SchoolA
Middle · Grades 6–8 · 1.6 mi
H
Lexingon High SchoolA+
High · Grades 9–12 · 1.9 mi

District: Lexington School District

Neighborhood · ZIP 02420These 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.13
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.103
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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.26%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.1%
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.16,303
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,192 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$199,197
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$278,860
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

21 Douglas 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.

  • Among the most valuable homes in Lexington 02420
  • Costs more per square foot than 82% of homes in Middlesex County
  • Among the largest homes in Lexington 02420
  • Has a bigger lot than 71% of homes in Middlesex County
  • Newer than 94% of homes in Middlesex County

What homes are worth in Lexington 02420

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

This home
$569K$3.9M

This home is worth more than almost all homes in Lexington 02420.

How it measures up in Lexington 02420

The dot is this home. The mark in the middle is the typical home in Lexington 02420.

Estimated value$4,450,000
CheaperTypical $1,465,726Pricier

Pricier than almost all homes nearby

Price per ft²$659
CheaperTypical $660Pricier

Pricier than 50% of homes nearby

Living area6,749 ft²
SmallerTypical 2,141 ft²Bigger

Bigger than almost all homes nearby

Lot size0.69 ac
SmallerTypical 0.38 acBigger

Bigger than 67% of homes nearby

Year built2008
OlderTypical 1962Newer

Newer than 86% of homes nearby

How 21 Douglas Rd ranks against every home in each area.
MeasureThis homeLexington 02420Middlesex County
Estimated valuepricier than$4,450,000almost all homesalmost all homes
Price per ft²pricier than$65950% of homes82% of homes
Living areabigger than6,749 ft²almost all homesalmost all homes
Lot sizebigger than0.69 ac67% of homes71% of homes
Year builtnewer than200886% of homes94% of homes

About 21 Douglas Rd

How much is 21 Douglas Rd, Lexington, MA worth?

The TopHap Estimate for 21 Douglas Rd, Lexington, MA is $4,450,000 as of Sep 24, 2026. The likely range is $4,230,768 to $4,669,231. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Douglas Rd, Lexington, MA last sell?

21 Douglas Rd, Lexington, MA last sold on Oct 29, 2015 for $2,820,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 21 Douglas Rd, Lexington, MA?

21 Douglas Rd, Lexington, MA has 5 bedrooms, 6.5 bathrooms, 6,749 square feet of living space and a 0.69-acre lot.

When was 21 Douglas Rd, Lexington, MA built?

21 Douglas Rd, Lexington, MA was built in 2008, making it 18 years old. It is a mansion home. The building has 2 stories.

What schools serve 21 Douglas Rd, Lexington, MA?

21 Douglas Rd, Lexington, MA is assigned to Fiske Elementary School (elementary), rated A; William Diamond Middle School (middle), rated A; Lexingon High School (high), rated A+. All sit in Lexington School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Douglas Rd, Lexington, MA compare to other homes in Lexington 02420?

Among the 5,175 homes in Lexington 02420, it is worth more than almost all of them ($4,450,000 against a typical $1,465,726), its price per square foot is higher than 50% of them ($659 against a typical $660), it is bigger than almost all of them (6,749 ft² against a typical 2,141 ft²), its lot is bigger than 67% of them (0.69 ac against a typical 0.38 ac) and it is newer than 86% of them (2008 against a typical 1962). Measured against all of Middlesex County, it is worth more than almost all 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 21 Douglas Rd, Lexington, MA?

The 2025 property tax bill for 21 Douglas Rd, Lexington, MA was $47,746. The county assessed it at $3,904,000.

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