Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$4,054,949$842 / 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 Sep 24, 2026
Last sold for $2,675,000 on May 24, 2021

840 HOLLOW TREE RIDGE RD

DARIEN, CT 06820
5
Beds
4.5
Baths
4,814 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.
2 ac
Lot SizeThe size of the land the home sits on, from county records.
1966
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
11
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

$4.1M
$3.8M low$4.3M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$2,675,000 · May 24, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$31,328 (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.$2,023,770 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,176,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$847,770
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$2,023,770
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,416,639

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.Colonial
CountyWESTERN CONNECTICUT
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.2003
Lot (acres)The size of the land the home sits on, from county records.2.00
HeatingThe type of heating system in the home.Hot Water
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

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
Ox Ridge Elementary SchoolA+
Elementary · Grades KG–5 · 0.8 mi
H
Darien High SchoolA+
High · Grades 9–12 · 1.8 mi
M
Middlesex Middle SchoolA+
Middle · Grades 6–8 · 2.7 mi

District: Darien School District

Neighborhood · ZIP 06820These 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.75
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.113
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.92

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.47%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.0%
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.24,276
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,613 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$269,018
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$411,809
Average tempThe average temperature here across a full year.52°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.58%

Owner Tools

Do you own this home?
Claim this home

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

840 Hollow Tree Ridge 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.

  • Worth more than 96% of homes in Western Connecticut County
  • Costs more per square foot than 90% of homes in Western Connecticut County
  • Bigger than 93% of homes in Western Connecticut County
  • Has a bigger lot than 92% of homes in Darien 06820
  • Newer than 66% of homes in Darien 06820

What homes are worth in Darien 06820

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

This home
$872K$7.5M

This home is worth more than 81% of homes in Darien 06820.

How it measures up in Darien 06820

The dot is this home. The mark in the middle is the typical home in Darien 06820.

Estimated value$4,054,949
CheaperTypical $2,490,886Pricier

Pricier than 81% of homes nearby

Price per ft²$842
CheaperTypical $828Pricier

Pricier than 54% of homes nearby

Living area4,814 ft²
SmallerTypical 3,053 ft²Bigger

Bigger than 81% of homes nearby

Lot size2 ac
SmallerTypical 0.52 acBigger

Bigger than 92% of homes nearby

Year built1966
OlderTypical 1955Newer

Newer than 66% of homes nearby

How 840 Hollow Tree Ridge Rd ranks against every home in each area.
MeasureThis homeDarien 06820Western Connecticut County
Estimated valuepricier than$4,054,94981% of homes96% of homes
Price per ft²pricier than$84254% of homes90% of homes
Living areabigger than4,814 ft²81% of homes93% of homes
Lot sizebigger than2 ac92% of homes83% of homes
Year builtnewer than196666% of homes49% of homes

About 840 Hollow Tree Ridge Rd

How much is 840 Hollow Tree Ridge Rd, Darien, CT worth?

The TopHap Estimate for 840 Hollow Tree Ridge Rd, Darien, CT is $4,054,949 as of Sep 24, 2026. The likely range is $3,818,929 to $4,290,969. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 840 Hollow Tree Ridge Rd, Darien, CT last sell?

840 Hollow Tree Ridge Rd, Darien, CT last sold on May 24, 2021 for $2,675,000, according to the county's recorded deed.

How big is 840 Hollow Tree Ridge Rd, Darien, CT?

840 Hollow Tree Ridge Rd, Darien, CT has 5 bedrooms, 4.5 bathrooms, 4,814 square feet of living space and a 2.00-acre lot.

When was 840 Hollow Tree Ridge Rd, Darien, CT built?

840 Hollow Tree Ridge Rd, Darien, CT was built in 1966, making it 60 years old. It is a colonial home. The building has 2 stories.

What schools serve 840 Hollow Tree Ridge Rd, Darien, CT?

840 Hollow Tree Ridge Rd, Darien, CT is assigned to Ox Ridge Elementary School (elementary), rated A+; Darien High School (high), rated A+; Middlesex Middle School (middle), rated A+. All sit in Darien School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 840 Hollow Tree Ridge Rd, Darien, CT compare to other homes in Darien 06820?

Among the 6,580 homes in Darien 06820, it is worth more than 81% of them ($4,054,949 against a typical $2,490,886), its price per square foot is higher than 54% of them ($842 against a typical $828), it is bigger than 81% of them (4,814 ft² against a typical 3,053 ft²), its lot is bigger than 92% of them (2 ac against a typical 0.52 ac) and it is newer than 66% of them (1966 against a typical 1955). Measured against all of Western Connecticut County, it is worth more than 96% 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 840 Hollow Tree Ridge Rd, Darien, CT?

The 2025 property tax bill for 840 Hollow Tree Ridge Rd, Darien, CT was $31,328. The county assessed it at $2,023,770.

More homes on Hollow Tree Ridge Rd

Closest homes

More homes in Darien 06820

Assigned schools

Explore the area

See this home in context

Open 840 Hollow Tree Ridge Rd on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map