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Single Family ResidenceResidential
$490,685$461 / 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 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $179,000 on Jun 18, 2013

643 ROUTE 81

KILLINGWORTH, CT 06419
2
Beds
1
Baths
1,064 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.
4.5 ac
Lot SizeThe size of the land the home sits on, from county records.
1957
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.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$491K
$460K low$522K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$179,000 · Jun 18, 2013
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$360,685
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$288,548
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.27%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$130,000
SEASONS FEDERAL CREDIT UNION · recorded Dec 16, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,653 (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.$215,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$75,040
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$140,560
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$215,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$150,920

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.44
10
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
20
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.
97
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
39
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.8 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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.Cape Cod
CountyLOWER CONNECTICUT RIVER VALLEY
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.1988
Lot (acres)The size of the land the home sits on, from county records.4.50
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.Forced Air With Air Conditioning
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck

Transaction History(1)

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.

M
Haddam-Killingworth Middle SchoolB+
Middle · Grades 6–8 · 2.0 mi
E
Killingworth Elementary SchoolA-
Elementary · Grades PK–3 · 2.8 mi
H
Haddam-Killingworth High SchoolA+
High · Grades 9–12 · 3.6 mi

District: Regional School District 17

Neighborhood · ZIP 06419These 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.78
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.120
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.61

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.3.8%
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.5,642
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.159 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$125,563
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$180,498
Average tempThe average temperature here across a full year.49°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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

643 Route 81 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 82% of homes in Killingworth 06419
  • Among the highest price per square foot in Killingworth 06419
  • Smaller than 89% of homes in Killingworth 06419
  • Has a bigger lot than 93% of homes in Lower Connecticut River Valley County
  • Older than 90% of homes in Killingworth 06419

What homes are worth in Killingworth 06419

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

This home
$364K$1.2M

This home is worth more than 18% of homes in Killingworth 06419.

How it measures up in Killingworth 06419

The dot is this home. The mark in the middle is the typical home in Killingworth 06419.

Estimated value$490,685
CheaperTypical $618,419Pricier

Pricier than 18% of homes nearby

Price per ft²$461
CheaperTypical $283Pricier

Pricier than almost all homes nearby

Living area1,064 ft²
SmallerTypical 2,093 ft²Bigger

Bigger than 11% of homes nearby

Lot size4.5 ac
SmallerTypical 2.7 acBigger

Bigger than 77% of homes nearby

Year built1957
OlderTypical 1985Newer

Newer than 10% of homes nearby

How 643 Route 81 ranks against every home in each area.
MeasureThis homeKillingworth 06419Lower Connecticut River Valley County
Estimated valuepricier than$490,68518% of homes48% of homes
Price per ft²pricier than$461almost all homes86% of homes
Living areabigger than1,064 ft²11% of homes16% of homes
Lot sizebigger than4.5 ac77% of homes93% of homes
Year builtnewer than195710% of homes32% of homes

About 643 Route 81

How much is 643 Route 81, Killingworth, CT worth?

The TopHap Estimate for 643 Route 81, Killingworth, CT is $490,685 as of Jul 14, 2026. The likely range is $459,849 to $521,521. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 643 Route 81, Killingworth, CT last sell?

643 Route 81, Killingworth, CT last sold on Jun 18, 2013 for $179,000, according to the county's recorded deed.

How big is 643 Route 81, Killingworth, CT?

643 Route 81, Killingworth, CT has 2 bedrooms, 1 bathrooms, 1,064 square feet of living space and a 4.50-acre lot.

When was 643 Route 81, Killingworth, CT built?

643 Route 81, Killingworth, CT was built in 1957, making it 69 years old. It is a cape cod home. The building has 1 story.

What schools serve 643 Route 81, Killingworth, CT?

643 Route 81, Killingworth, CT is assigned to Haddam-Killingworth Middle School (middle), rated B+; Killingworth Elementary School (elementary), rated A-; Haddam-Killingworth High School (high), rated A+. All sit in Regional School District 17. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 643 Route 81, Killingworth, CT compare to other homes in Killingworth 06419?

Among the 2,550 homes in Killingworth 06419, it is worth more than 18% of them ($490,685 against a typical $618,419), its price per square foot is higher than almost all of them ($461 against a typical $283), it is bigger than 11% of them (1,064 ft² against a typical 2,093 ft²), its lot is bigger than 77% of them (4.5 ac against a typical 2.7 ac) and it is newer than 10% of them (1957 against a typical 1985). Measured against all of Lower Connecticut River Valley County, it is worth more than 48% 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 643 Route 81, Killingworth, CT?

The 2025 property tax bill for 643 Route 81, Killingworth, CT was $5,653. The county assessed it at $215,600.

Closest homes

More homes in Killingworth 06419

Assigned schools

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