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Single Family ResidenceResidential
$187,834$247 / 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 92How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $150,500 on Jun 14, 2021

21 MILL ST

PUTNAM, CT 06260
2
Beds
1
Baths
761 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.
3,049 ft²
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$188K
$173K low$202K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$150,500 · Jun 14, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,758 (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.$108,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$16,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$92,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$103,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$76,160

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.36
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
5
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
54
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
91
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
32
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.Ranch
CountyNORTHEASTERN CONNECTICUT
Lot (acres)The size of the land the home sits on, from county records.0.07
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Steam
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(13)

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.

H
Putnam High SchoolB-
High · Grades 9–12 · 0.3 mi
E
Putnam Elementary SchoolC
Elementary · Grades PK–4 · 0.6 mi
M
Putnam Middle SchoolC+
Middle · Grades 5–8 · 0.7 mi

District: Putnam School District

Neighborhood · ZIP 06260These 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.150
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.60

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.10%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.9,441
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.472 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$66,120
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$82,210
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.51 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

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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 Mill 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.

  • Among the least valuable homes in Putnam 06260
  • Costs more per square foot than 65% of homes in Putnam 06260
  • Smaller than 98% of homes in Putnam 06260
  • Among the smallest lots in Putnam 06260
  • Older than 88% of homes in Northeastern Connecticut County

What homes are worth in Putnam 06260

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

This home
$196K$704K

This home is worth less than almost all homes in Putnam 06260.

How it measures up in Putnam 06260

The dot is this home. The mark in the middle is the typical home in Putnam 06260.

Estimated value$187,834
CheaperTypical $324,218Pricier

Cheaper than almost all homes nearby

Price per ft²$247
CheaperTypical $222Pricier

Pricier than 65% of homes nearby

Living area761 ft²
SmallerTypical 1,576 ft²Bigger

Bigger than 2% of homes nearby

Lot size3,049 ft²
SmallerTypical 0.46 acBigger

Smaller than almost all homes nearby

Year built1900
OlderTypical 1962Newer

Newer than 22% of homes nearby

How 21 Mill St ranks against every home in each area.
MeasureThis homePutnam 06260Northeastern Connecticut County
Estimated valuepricier than$187,834almost no homesalmost no homes
Price per ft²pricier than$24765% of homes42% of homes
Living areabigger than761 ft²2% of homes3% of homes
Lot sizebigger than3,049 ft²almost no homesalmost no homes
Year builtnewer than190022% of homes12% of homes

About 21 Mill St

How much is 21 Mill St, Putnam, CT worth?

The TopHap Estimate for 21 Mill St, Putnam, CT is $187,834 as of Aug 30, 2026. The likely range is $173,186 to $202,482. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Mill St, Putnam, CT last sell?

21 Mill St, Putnam, CT last sold on Jun 14, 2021 for $150,500, according to the county's recorded deed. TopHap holds 6 recorded sales for this parcel.

How big is 21 Mill St, Putnam, CT?

21 Mill St, Putnam, CT has 2 bedrooms, 1 bathrooms, 761 square feet of living space and a 0.07-acre lot.

When was 21 Mill St, Putnam, CT built?

21 Mill St, Putnam, CT was built in 1900, making it 126 years old. It is a ranch home. The building has 1 story.

What schools serve 21 Mill St, Putnam, CT?

21 Mill St, Putnam, CT is assigned to Putnam High School (high), rated B-; Putnam Elementary School (elementary), rated C; Putnam Middle School (middle), rated C+. All sit in Putnam School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Mill St, Putnam, CT compare to other homes in Putnam 06260?

Among the 2,867 homes in Putnam 06260, it is worth more than almost none of them ($187,834 against a typical $324,218), its price per square foot is higher than 65% of them ($247 against a typical $222), it is bigger than 2% of them (761 ft² against a typical 1,576 ft²), its lot is bigger than almost none of them (3,049 ft² against a typical 0.46 ac) and it is newer than 22% of them (1900 against a typical 1962). Measured against all of Northeastern Connecticut County, it is worth more than almost no 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 Mill St, Putnam, CT?

The 2025 property tax bill for 21 Mill St, Putnam, CT was $2,758. The county assessed it at $108,800.

More homes on Mill St

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