Is Mount Sinai, NY 11766 a buyer’s or seller’s market?

The Mount Sinai housing market right now

In the three months ending August 31, 2026, 47% of homes in Mount Sinai, NY 11766 sold above their list price, the typical home went under contract in 26 days and there were 2.8 months of supply. Under four months of supply means sellers have the edge: expect competition for well-priced homes. That’s based on 39 home sales.

Compared with the same period a year earlier, the share selling over asking fell from 68%, homes sold more slowly (19 days then) and the median sale price held steady to $774,665. Overall, Mount Sinai is less competitive than a year ago, which gives buyers more room.

Within Suffolk County, homes here sell faster than in 53% of the county’s ZIP codes, and sell less often over asking than in 59%. On our competition score, Mount Sinai ranks #292 of 649 NY ZIP codes with enough sales (score 79 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.