Market reportCohasset02025 The House That Sold for 21% Over Ask Before It Was Built: Inside Cohasset's 66 Black Horse Lane
A brand-new waterfront home on 1.78 acres of Cohasset's Gulf River listed at $3,995,000 in April 2025 and closed August 6, 2026 at $4,858,012 — $863,012 ABOVE the ask, at $1,104 per square foot. There was no bidding war. The number went up because the house didn't exist yet, and the third one on this street just did the same thing.
On August 6, 2026, 66 Black Horse Lane in Cohasset closed at $4,858,012 — 21.6% above the $3,995,000 it asked when it listed in April 2025. The 4-bed, 4-bath, 4,400-square-foot home on 1.78 waterfront acres priced out at $1,104/sqft, roughly 91% above Cohasset's $578 median, and 2.9x the town's recent median sale. The oddly precise price is the tell: this was a to-be-built custom home, and Black Horse Lane has now produced three of Cohasset's twelve $4M+ sales in three years.