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Single Family ResidenceResidential
$360,707$303 / 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 86How 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

166 UNION ST

DEEP RIVER, CT 06417
3
Beds
1.5
Baths
1,189 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.
0.43 ac
Lot SizeThe size of the land the home sits on, from county records.
1910
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$361K
$309K low$413K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,992 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$156,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$45,220
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$110,880
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$109,270

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.Conventional
CountyLOWER CONNECTICUT RIVER VALLEY
Lot (acres)The size of the land the home sits on, from county records.0.43
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
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Deep River Elementary SchoolB+
Elementary · Grades PK–6 · 0.5 mi
H
Valley Regional High SchoolB
High · Grades 9–12 · 1.2 mi
M
John Winthrop Middle SchoolC
Middle · Grades 7–8 · 1.8 mi

District: Regional High School District 04

Neighborhood · ZIP 06417These 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.97
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.119
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.59

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.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.4,099
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.283 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$96,978
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$123,568
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.50 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

166 Union 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.

  • Worth less than 77% of homes in Lower Connecticut River Valley County
  • Costs more per square foot than 75% of homes in Deep River 06417
  • Smaller than 77% of homes in Lower Connecticut River Valley County
  • Has a smaller lot than 73% of homes in Deep River 06417
  • Older than 91% of homes in Lower Connecticut River Valley County

What homes are worth in Deep River 06417

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

This home
$201K$1.8M

This home is worth more than 31% of homes in Deep River 06417.

How it measures up in Deep River 06417

The dot is this home. The mark in the middle is the typical home in Deep River 06417.

Estimated value$360,707
CheaperTypical $415,000Pricier

Pricier than 31% of homes nearby

Price per ft²$303
CheaperTypical $269Pricier

Pricier than 75% of homes nearby

Living area1,189 ft²
SmallerTypical 1,574 ft²Bigger

Bigger than 24% of homes nearby

Lot size0.43 ac
SmallerTypical 1 acBigger

Bigger than 27% of homes nearby

Year built1910
OlderTypical 1966Newer

Newer than 22% of homes nearby

How 166 Union St ranks against every home in each area.
MeasureThis homeDeep River 06417Lower Connecticut River Valley County
Estimated valuepricier than$360,70731% of homes23% of homes
Price per ft²pricier than$30375% of homes57% of homes
Living areabigger than1,189 ft²24% of homes23% of homes
Lot sizebigger than0.43 ac27% of homes35% of homes
Year builtnewer than191022% of homes9% of homes

About 166 Union St

How much is 166 Union St, Deep River, CT worth?

The TopHap Estimate for 166 Union St, Deep River, CT is $360,707 as of Aug 30, 2026. The likely range is $308,563 to $412,851. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 166 Union St, Deep River, CT last sell?

166 Union St, Deep River, CT last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 166 Union St, Deep River, CT?

166 Union St, Deep River, CT has 3 bedrooms, 1.5 bathrooms, 1,189 square feet of living space and a 0.43-acre lot.

When was 166 Union St, Deep River, CT built?

166 Union St, Deep River, CT was built in 1910, making it 116 years old. It is a conventional home. The building has 2 stories.

What schools serve 166 Union St, Deep River, CT?

166 Union St, Deep River, CT is assigned to Deep River Elementary School (elementary), rated B+; Valley Regional High School (high), rated B; John Winthrop Middle School (middle), rated C. All sit in Regional High School District 04. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 166 Union St, Deep River, CT compare to other homes in Deep River 06417?

Among the 1,799 homes in Deep River 06417, it is worth more than 31% of them ($360,707 against a typical $415,000), its price per square foot is higher than 75% of them ($303 against a typical $269), it is bigger than 24% of them (1,189 ft² against a typical 1,574 ft²), its lot is bigger than 27% of them (0.43 ac against a typical 1 ac) and it is newer than 22% of them (1910 against a typical 1966). Measured against all of Lower Connecticut River Valley County, it is worth more than 23% 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 166 Union St, Deep River, CT?

The 2024 property tax bill for 166 Union St, Deep River, CT was $4,992. The county assessed it at $156,100.

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