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Single Family ResidenceResidential
$672,362$387 / 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 97How 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 $349,900 on May 31, 2017

21 DOUGLAS DR

AYER, MA 01432
3
Beds
2 / 2
Baths
1,736 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.
1.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1983
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.

Valuation

$672K
$651K low$694K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$349,900 · May 31, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,916 (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.$578,300 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$159,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$418,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$566,960

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.185 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.1 percent flood zone

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.Ranch
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.1996
Lot (acres)The size of the land the home sits on, from county records.1.11
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
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(8)

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
Page Hilltop Elementary SchoolB-
Elementary · Grades PK–5 · 0.9 mi
H
Ayer Shirley Regional High SchoolB
High · Grades 9–12 · 0.9 mi
M
Ayer Shirley Regional Middle SchoolB-
Middle · Grades 6–8 · 3.6 mi

District: Ayer-Shirley School District

Neighborhood · ZIP 01432These 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.116
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 100.69

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.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.2%
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.8,319
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.972 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$96,941
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$133,807
Average tempThe average temperature here across a full year.48°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 Dr 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 more than 72% of homes in Ayer 01432
  • Costs more per square foot than 70% of homes in Ayer 01432
  • Has a bigger lot than 81% of homes in Middlesex County
  • Newer than 74% of homes in Middlesex County

What homes are worth in Ayer 01432

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

This home
$287K$962K

This home is worth more than 72% of homes in Ayer 01432.

How it measures up in Ayer 01432

The dot is this home. The mark in the middle is the typical home in Ayer 01432.

Estimated value$672,362
CheaperTypical $553,304Pricier

Pricier than 72% of homes nearby

Price per ft²$387
CheaperTypical $348Pricier

Pricier than 70% of homes nearby

Living area1,736 ft²
SmallerTypical 1,632 ft²Bigger

Bigger than 55% of homes nearby

Lot size1.11 ac
SmallerTypical 0.46 acBigger

Bigger than 77% of homes nearby

Year built1983
OlderTypical 1977Newer

Newer than 52% of homes nearby

How 21 Douglas Dr ranks against every home in each area.
MeasureThis homeAyer 01432Middlesex County
Estimated valuepricier than$672,36272% of homes36% of homes
Price per ft²pricier than$38770% of homes30% of homes
Living areabigger than1,736 ft²55% of homes45% of homes
Lot sizebigger than1.11 ac77% of homes81% of homes
Year builtnewer than198352% of homes74% of homes

About 21 Douglas Dr

How much is 21 Douglas Dr, Ayer, MA worth?

The TopHap Estimate for 21 Douglas Dr, Ayer, MA is $672,362 as of Oct 21, 2026. The likely range is $650,626 to $694,098. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Douglas Dr, Ayer, MA last sell?

21 Douglas Dr, Ayer, MA last sold on May 31, 2017 for $349,900, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 21 Douglas Dr, Ayer, MA?

21 Douglas Dr, Ayer, MA has 3 bedrooms, 2 bathrooms, 1,736 square feet of living space and a 1.11-acre lot.

When was 21 Douglas Dr, Ayer, MA built?

21 Douglas Dr, Ayer, MA was built in 1983, making it 43 years old. It is a ranch home. The building has 1 story.

What schools serve 21 Douglas Dr, Ayer, MA?

21 Douglas Dr, Ayer, MA is assigned to Page Hilltop Elementary School (elementary), rated B-; Ayer Shirley Regional High School (high), rated B; Ayer Shirley Regional Middle School (middle), rated B-. All sit in Ayer-Shirley School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Douglas Dr, Ayer, MA compare to other homes in Ayer 01432?

Among the 2,710 homes in Ayer 01432, it is worth more than 72% of them ($672,362 against a typical $553,304), its price per square foot is higher than 70% of them ($387 against a typical $348), it is bigger than 55% of them (1,736 ft² against a typical 1,632 ft²), its lot is bigger than 77% of them (1.11 ac against a typical 0.46 ac) and it is newer than 52% of them (1983 against a typical 1977). Measured against all of Middlesex County, it is worth more than 36% 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 21 Douglas Dr, Ayer, MA?

The 2025 property tax bill for 21 Douglas Dr, Ayer, MA was $6,916. The county assessed it at $578,300.

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