This truly magnificent 10-acre waterfront compound on Long Island Sound has a remarkably private setting with 440' of direct water frontage. The panoramic vistas to the east and south across Cos Cob Harbor and out to the Long Island Sound provide an incredible array of breathtaking water views. The property is bordered to the south by the 50-acre Copper Beech Farm. The 5-bedroom shingle style residence was completely renovated in 2018 highlighted by an exquisite glistening kitchen and incredible bathrooms with extraordinary marble slab designs. In addition to the waterside pool and spa, the expansive compound includes a Vermont style barn serving as a guest house and party barn flanked by a lighted tennis court. This unique waterfront estate has a back country secluded ambiance, yet it is close to town. Truly a rare opportunity to acquire a world-class property and enjoy in the current state or build an incredible great estate.
Single-familyProperty Type
1962Year Built
4.2 acresLot Size
$2,823Est. Price/Sq.Ft.
4 car garageParking
Listed by Christopher Finlay• Brown Harris Stevens
Bought with Non Member• Non-Member
Source:Smart MLS #170596857
Redfin Estimate
$18,077,116
$577K since sold in February 2025$869K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 135.9% higher than the average sale price ($7.66M) of 6 comparable homes.
This truly magnificent 10-acre waterfront compound on Long Island Sound has a remarkably private setting with 440' of direct water frontage. The panoramic vistas to the east and south across Cos Cob Harbor and out to the Long Island Sound provide an incredible array of breathtaking water views. The property is bordered to the south by the 50-acre Copper Beech Farm. The 5-bedroom shingle style residence was completely renovated in 2018 highlighted by an exquisite glistening kitchen and incredible bathrooms with extraordinary marble slab designs. In addition to the waterside pool and spa, the expansive compound includes a Vermont style barn serving as a guest house and party barn flanked by a lighted tennis court. This unique waterfront estate has a back country secluded ambiance, yet it is close to town. Truly a rare opportunity to acquire a world-class property and enjoy in the current state or build an incredible great estate.
Smart MLS #170596857
Feb 27, 2025
Sold
$17,500,000
$2,733/sq ft
Jan 14, 2025
Pending
—
Sep 6, 2023
Listed
$18,500,000
$2,889/sq ft
GMLS #115368
Mar 28, 2022
Listed
$20,000,000
$3,123/sq ft
GMLS #96761
Dec 6, 2016
Sold
$15,250,000
$2,381/sq ft
May 18, 2016
Listed
$16,500,000
$2,577/sq ft
Smart MLS #99146572
Dec 6, 2016
Sold
$15,250,000
$2,381/sq ft
Dec 1, 2016
Listing Removed
—
May 18, 2016
Listed
$16,500,000
$2,577/sq ft
Smart MLS #99110545
Mar 31, 2016
Listing Removed
—
Jun 29, 2015
Listed
$18,750,000
$2,928/sq ft
GMLS #93842
Jun 22, 2015
Listed
$18,750,000
$2,928/sq ft
Smart MLS #99108615
Jun 23, 2015
Listing Removed
—
Jun 11, 2015
Listed
$18,750,000
$2,928/sq ft
GMLS #93652
Jun 5, 2015
Listed
$18,750,000
$2,928/sq ft
GMLS #93655
Jun 5, 2015
Listed
$18,750,000
$2,928/sq ft
Public Records
May 13, 1992
Sold
$2,500,000
$390/sq ft
Year
Property tax
Land + Additions
Assessment*
2023
$85,361 (+1.0%)
$5,580,890 + $1,913,520
$7,494,410
2022
$84,537 (+0.3%)
$5,580,890 + $1,913,520
$7,494,410
2021
$84,292
$5,212,550 + $2,060,310
$7,272,860
2020
$84,292 (−0.8%)
$5,212,550 + $2,060,310
$7,272,860
2019
$84,947 (+2.7%)
$5,212,550 + $2,060,310
$7,272,860
2018
$82,692 (+4.5%)
$5,212,550 + $2,060,310
$7,272,860
2017
$79,105 (+1.5%)
$5,212,550 + $1,744,750
$6,957,300
2016
$77,922 (+18.2%)
$5,212,550 + $1,744,750
$6,957,300
2014
$65,901
$4,870,670 + $1,136,730
$6,007,400
Tax history for 7 Cobb Island Dr
Year
Property tax
Land + Additions
Assessment*
2023
$85,361 (+1.0%)
$5,580,890 + $1,913,520
$7,494,410
2022
$84,537 (+0.3%)
$5,580,890 + $1,913,520
$7,494,410
2021
$84,292
$5,212,550 + $2,060,310
$7,272,860
2020
$84,292 (−0.8%)
$5,212,550 + $2,060,310
$7,272,860
2019
$84,947 (+2.7%)
$5,212,550 + $2,060,310
$7,272,860
2018
$82,692 (+4.5%)
$5,212,550 + $2,060,310
$7,272,860
2017
$79,105 (+1.5%)
$5,212,550 + $1,744,750
$6,957,300
2016
$77,922 (+18.2%)
$5,212,550 + $1,744,750
$6,957,300
2014
$65,901
$4,870,670 + $1,136,730
$6,007,400
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.