Is Mastic Beach, NY 11951 a buyer’s or seller’s market?

The Mastic Beach housing market right now

In the three months ending August 31, 2026, 67% of homes in Mastic Beach, NY 11951 sold above their list price, the typical home went under contract in 34 days and there were 4 months of supply. Four to six months of supply is a balanced market, where pricing and condition decide how much room there is to negotiate. That’s based on 44 home sales.

Compared with the same period a year earlier, the share selling over asking rose from 45%, homes sold faster (41 days then) and the median sale price rose 6% to $464,799. Overall, Mastic Beach is more competitive than a year ago, so tougher for buyers.

Within Suffolk County, homes here sell more slowly than in 65% of the county’s ZIP codes, and sell more often over asking than in 72%. On our competition score, Mastic Beach ranks #314 of 649 NY ZIP codes with enough sales (score 77 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.