Skip to content
Skip to content
TopHapOpen in map
CondominiumResidential

78 River Rd

COS COB, CT 06807
1985
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.
Built 198516 units2,024–2,469 ft²
$19M
All units combinedThe sum of our current value estimates for every unit in the building — roughly what the whole building's homes are worth together.
$1.5M
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$635
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

-8.0%vs the Cos Cob ZIP median sale $/ft² ($690)

Sales Performance

—
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
—
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
0
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
0.0%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+4.4%per yeartypical hold 6.7 yrsfrom 17 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
19871994199720012009201420182024
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
19871994199720012009201420182024

33 arms-length sales on record for this building.

Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.

Every unit: size vs estimated valueEvery unit in the building as one dot: across is its size, up is our current value estimate, and color is its bedroom count. Vertical columns of dots are recurring floor plans; the height spread within a column shows how much floor, view and condition move prices for the same layout.
$1.3M$1.4M$1.5M$1.6M2,024 ft²2,113 ft²2,202 ft²2,291 ft²2,380 ft²2,469 ft²
3 bd4+ bd
3 bed
13 units
4 bed
3 units
Recurring floor plansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
3 bd · 2.5 ba · 2,210 ft²
2 units
3 bd · 2.5 ba · 2,274 ft²
2 units
One-off layouts
12 units

Value DistributionHow the building's units spread across value ranges by our current estimates. A wide spread usually means big differences in size, floor or view.

$1.3M–$1.3M
2 units
$1.3M–$1.3M
1 unit
$1.4M–$1.4M
2 units
$1.4M–$1.4M
1 unit
$1.5M–$1.5M
1 unit
$1.5M–$1.5M
2 units
$1.6M–$1.6M
2 units
$1.6M–$1.6M
2 units

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.81%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.19%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.16.9 yrs
Cash purchases (5 yrs)The share of purchases in the last 5 years with no mortgage recorded. High cash share is common in second-home and investor buildings.100%
Avg. loan-to-valueAverage current loan balance against unit value across the building. Low numbers mean owners hold lots of equity — a sign of financial stability.14%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$1,445,944
Median tax billThe middle annual property tax bill among the building's units.$7,622
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.0

Recent SalesThe latest recorded arms-length sales in the building, newest first.

Unit 9Oct 10, 2024$1,360,000Unit 3Mar 16, 2023$1,250,000Unit 13Aug 18, 2022$1,475,000Unit 13Aug 2, 2018$952,042Unit 3Aug 15, 2017$819,000Unit 15Apr 20, 2017$720,000Unit 15Jan 12, 2017$875,000Unit 1Apr 26, 2016$885,000Unit 4Sep 26, 2014$892,000Unit 13Jul 13, 2012$805,000

Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.

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.59
87
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.
64
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
96
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
43
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.41 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Condominium
CountyWESTERN CONNECTICUT
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
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
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
Cos Cob SchoolB
Elementary · Grades KG–5 · 0.3 mi
M
Central Middle SchoolA-
Middle · Grades 6–8 · 0.9 mi
H
Greenwich High SchoolA+
High · Grades 9–12 · 1.0 mi

District: Greenwich School District

Neighborhood · ZIP 06807These 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.54
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.112
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.103

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.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.3%
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.7,630
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,321 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$180,144
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$235,340
Average tempThe average temperature here across a full year.52°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.58%

All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.

78 River Rd # 1
3 bd · 3.5 ba · 2,272 ft²
$1.6M
78 River Rd # 2
3 bd · 2.5 ba · 2,362 ft²
$1.5M
78 River Rd # 3
3 bd · 2.5 ba · 2,274 ft²
$1.6M
78 River Rd # 4
3 bd · 2.5 ba · 2,322 ft²
$1.4M
78 River Rd # 5
3 bd · 2.5 ba · 2,274 ft²
$1.5M
78 River Rd # 6
3 bd · 2.5 ba · 2,124 ft²
$1.3M
78 River Rd
3 bd · 2.5 ba · 2,210 ft²
$1.4M
78 River Rd
3 bd · 2.5 ba · 2,254 ft²
78 River Rd # 9
3 bd · 2.5 ba · 2,210 ft²
$1.5M
78 River Rd # 10
3 bd · 3.5 ba · 2,210 ft²
$1.4M
78 River Rd # 11
3 bd · 2.5 ba · 2,024 ft²
$1.3M
78 River Rd # 12
4 bd · 2.5 ba · 2,414 ft²
$1.3M
78 River Rd # 13
3 bd · 3.5 ba · 2,381 ft²
$1.6M
78 River Rd # 14
4 bd · 2.5 ba · 2,469 ft²
$1.6M
78 River Rd # 15
3 bd · 2.5 ba · 2,381 ft²
78 River Rd # 16
4 bd · 2.5 ba · 2,381 ft²

Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

About 78 River Rd

How many units are in 78 River Rd, Cos Cob, CT?

78 River Rd, Cos Cob, CT has 16 residential units across built in 1985, according to county assessor records.

What is a unit at 78 River Rd, Cos Cob, CT worth?

The median TopHap Estimate across the 16 units at 78 River Rd, Cos Cob, CT is $1,461,863. That works out to $635 per square foot. Units run from 2,024 to 2,469 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 78 River Rd, Cos Cob, CT expensive for Cos Cob?

Units at 78 River Rd, Cos Cob, CT carry a median of $635 per square foot, 8% below the Cos Cob median of $690 per square foot.

How often do units sell at 78 River Rd, Cos Cob, CT?

0 units at 78 River Rd, Cos Cob, CT sold in the last 12 months, out of 33 recorded arms-length sales all time. That is a turnover rate of 0.0% of the building per year.

Have units at 78 River Rd, Cos Cob, CT appreciated?

Across 17 repeat sales of the same unit, 78 River Rd, Cos Cob, CT returned a median 4.4% per year. Because each pair is the same unit bought and sold, the figure is not distorted by which units traded. The median owner held for 6.7 years.

What floor plans does 78 River Rd, Cos Cob, CT have?

The most common plan at 78 River Rd, Cos Cob, CT is a 3-bedroom of 2,210 square feet, repeated 2 times, with a median estimate of $1,427,087. TopHap identifies 2 recurring plans in the building.

More homes on River Rd

Closest homes

More homes in Cos Cob 06807

Assigned schools

Explore the area

See this home in context

Open 78 River 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