Is Stony Brook, NY 11790 a buyer’s or seller’s market?
Stony Brook is a seller’s market. With about 1.2 months of supply and 81% of recent sales closing above the original list price, competing offers are common on well-priced homes. Buyers here often have a pre-approval in hand and a plan for the appraisal gap before touring.
#2 of 125 ZIP codes in Nassau & Suffolk counties, NY, and #30 of 531 across all the markets we track.
Based on share sold above original list, sale-to-list ratio, months of supply and days on market for the 3 months ending August 31, 2026. How the heat score works
The Stony Brook housing market right now
In the three months ending August 31, 2026, 81% of homes in Stony Brook, NY 11790 sold above their list price, the typical home went under contract in 20 days and there were 1.2 months of supply. Under four months of supply means sellers have the edge: expect competition for well-priced homes. That’s based on 61 home sales.
Compared with the same period a year earlier, the share selling over asking rose from 69%, homes sold about as fast and the median sale price rose 12% to $839,637. Overall, Stony Brook is more competitive than a year ago, so tougher for buyers.
Within Suffolk County, homes here sell faster than in 91% of the county’s ZIP codes, and sell more often over asking than in 93%. On our competition score, Stony Brook ranks #84 of 649 NY ZIP codes with enough sales (score 96 out of 100).
Nearby, buyers who want less competition could look at Westhampton 11977 (0% sold over asking) or Water Mill 11976 (0% sold over asking), while West Sayville 11796 (100% sold over asking) and Peconic 11958 (100% sold over asking) are even more competitive.
Run the numbers for 11790
Nearby markets
Amagansett 11930Balanced $988 /sq ftAmityville 11701Seller’s market $442 /sq ftBabylon 11702Seller’s market $455 /sq ftBay Shore 11706Seller’s market $426 /sq ft Browse all markets →Towns like Stony Brook nearby
Find towns like Stony Brook in other states →Where Stony Brook is
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Questions about Stony Brook real estate
Is Stony Brook a buyer’s or seller’s market?
A seller’s market: there were 1.2 months of supply in Stony Brook, NY 11790 in the three months ending August 31, 2026. Under four months usually favors sellers, and more than six favors buyers.
How fast do homes sell in Stony Brook?
The typical home went under contract in 20 days in the latest three months.
Do homes in Stony Brook sell over asking?
81% of homes sold above their original list price, and the typical sale closed at 106.4% of the list price.
What are property taxes in Stony Brook?
About 1.73% of a home’s value a year in Suffolk County, or roughly $6,920 on a $400,000 home.
What is the median home price in Stony Brook?
The median sale price was $839,637 in the three months ending August 31, 2026, about $422 per square foot.
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Market data describes housing activity only. Figures are rolling 3-month values from Redfin and may be revised. Methodology