A $27.8 million Old Greenwich sale topped every Greenwich neighborhood through the first nine months of 2026. Townwide, the single-family market crossed $1.7 billion in volume even as the number of closings slipped.
The data comes from a quarterly neighborhood breakdown by Mark Pruner, a sales executive and founder of the Greenwich Streets Team at Compass Connecticut, first reported by the Greenwich Sentinel on Sunday, Oct. 11.
Greenwich recorded 380 single-family sales through September, down from 392 in the same stretch of 2025. Total dollar volume still rose 3.4%, or $58 million. The average price per square foot climbed 4.8%, and the median days on market sat at 17.
Inventory stayed thin. The town ended September with 119 active listings, barely above the 116 counted a year earlier. Pruner called that uptick "highly deceptive" because it arrived entirely in the final weeks of September. For most of 2026, weekly inventory ran about 20% below 2025 levels.
Old Greenwich surges
Old Greenwich posted the largest volume gain of any neighborhood, up $61.7 million year over year on seven additional sales. Its average price per square foot jumped $150 to $1,298, matching the Julian Curtiss district's $1,299 figure. Julian Curtiss includes the gated waterfront enclaves of Belle Haven, Indian Harbor and Mead Point.
The $27.8 million sale also eclipsed Julian Curtiss's top transaction of $25 million.
Riverside moves fast
Riverside recorded 47 sales, up seven from 2025, with a median time on market of 11 days. Buyers paid an average of 108.5% of list price, the highest ratio in town. Contingent contracts were rare.
"Bring cash in Riverside or waive the mortgage and have a rich uncle who can bail you out in case the lender won't approve you, because otherwise you are out your 10% deposit," Pruner wrote.
Backcountry and Cos Cob diverge
The Parkway district, covering backcountry and the two-acre zone south of the Merritt Parkway, led Greenwich with 74 sales but saw volume fall as its top sale dropped from $43.5 million in 2025 to $10.3 million. Cos Cob sales fell from 40 to 23, yet the average price per square foot rose $57 to $840.
Pruner's full neighborhood-by-neighborhood breakdown, including records for Dundee, North Street, Glenville and Hamilton Avenue, is available in the Greenwich Sentinel.
