Condos for Sale in Stony Brook, NY
Listings
Too small a sample to be statistically stable —
OneKey® MLS Data
Condos for Sale in Stony Brook, NY
Nassau · Suffolk · Queens · Brooklyn
Listings courtesy of OneKey® MLS as distributed by MLS GRID.
Based on information submitted to the MLS GRID as of November 6, 2026 3:00 pm. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.
Personal-use terms and which listings this site shows: MLS & Data Disclosures
Stony Brook market
Sold homes · hamlet boundary · SuffolkStony Brook recorded 133 single-family sales in the past 12 months, against 127 in the 12 months before, and 17 homes for sale now. They sold in a median of 17 days, at about 102.7% of final asking price.
The median sale price is up about 10% on the 12 months before (133 sales against 127).
That works out to about 1.5 months of single-family supply.
How we calculated this
- Single-family homes inside the official hamlet boundary (Census), Suffolk County sales only, Oct 7, 2025 – Oct 7, 2026 (the 12 months before: Oct 7, 2024 – Oct 7, 2025). For sale = listed as of Nov 6, 2026.
- Supply = homes for sale now ÷ (sales in the 12 months ÷ 12), counted the same way in each area.
- Label from the site’s scale: under 2 months Hot Seller’s, under 4 Seller’s, 4–6 Balanced, over 6–8 Buyer’s, over 8 Strong Buyer’s. A warning is added when there are fewer than 10 sales or 5 homes for sale, or one more listing or sale would change the label.
- Only homes with a map position can be placed inside a boundary. A count is shown as unavailable when fewer than 90% of an area’s sales have one (here: about 98%).
Condos: 16 sold in 12 months · 4 for sale
Only 4 homes for sale.
Stony Brook recorded 16 condo sales in the past 12 months, against 26 in the 12 months before, and 4 homes for sale now. They sold in a median of 29 days, at about 102.1% of final asking price.
The median sale price is up about 21% on the 12 months before (16 sales against 26), too few sales either year to be a stable trend.
That works out to about 3 months of condo supply.
How we calculated this
- Condos inside the official hamlet boundary (Census), Suffolk County sales only, Oct 7, 2025 – Oct 7, 2026 (the 12 months before: Oct 7, 2024 – Oct 7, 2025). For sale = listed as of Nov 6, 2026.
- Supply = homes for sale now ÷ (sales in the 12 months ÷ 12), counted the same way in each area.
- Label from the site’s scale: under 2 months Hot Seller’s, under 4 Seller’s, 4–6 Balanced, over 6–8 Buyer’s, over 8 Strong Buyer’s. A warning is added when there are fewer than 10 sales or 5 homes for sale, or one more listing or sale would change the label.
- Only homes with a map position can be placed inside a boundary. A count is shown as unavailable when fewer than 90% of an area’s sales have one (here: about 100%).