Is Iselin, NJ 08830 a buyer’s or seller’s market?

The Iselin housing market right now

In the three months ending August 31, 2026, 69% of homes in Iselin, NJ 08830 sold above their list price, the typical home went under contract in 62 days and there were 6.1 months of supply. More than six months of supply favors buyers, who usually have more time and more room to negotiate. That’s based on 30 home sales.

Compared with the same period a year earlier, the share selling over asking rose from 67%, homes sold faster (64 days then) and the median sale price rose 2% to $534,769. Overall, Iselin is about as competitive as it was a year ago.

Within Middlesex County, homes here sell faster than in 57% of the county’s ZIP codes, and sell more often over asking than in 91%. On our competition score, Iselin ranks #341 of 444 NJ ZIP codes with enough sales (score 63 out of 100).

Nearby, buyers who want less competition could look at Plainsboro 08536 (26% sold over asking) or Monroe Township 08831 (35% sold over asking), while Sewaren 07077 (100% sold over asking) and Middlesex 08846 (87% sold over asking) are even more competitive.