Nassau County Home Prices Near $900K as Summer Market Heats Up

Nassau County’s housing market ended the summer on a high note, with single-family home prices pushing closer to the $900,000 mark. According to the latest data from OneKey MLS, the median sales price for a single-family house in Nassau climbed to $875,000 in August, up 5.4% from $830,000 a year earlier.

Even with interest rates continuing to challenge buyers, demand in Nassau remains strong—so strong, in fact, that most sellers are still walking away with nearly full asking price. In August, homes sold for 100.2% of their list price, a slight dip from last year’s 100.5%, but still a clear signal that bidding wars remain alive and well.

Quick Sales and Shrinking Inventory

Homes are also moving off the market faster. Single-family houses in Nassau sold in just 36 days on average, down from 44 days last year. Sales volume ticked up slightly—882 transactions compared to 870 a year ago—but the real story is supply.

• New listings fell 8.7% year-over-year, from 954 to 871.

• Overall inventory dropped 10.2%, leaving just 2,097 single-family homes available in August.

This tightening of supply is a major reason prices keep climbing. With fewer homes for sale, buyers have less leverage, and competition stays fierce.

Nassau vs. The Region

Nassau’s steady price growth stands out when compared with the wider metro area. From July to August, Nassau prices rose 1.74% month-over-month, slower than the double-digit surges seen in Sullivan (+16.4%) and Putnam (+11.3%) counties—but still moving upward while other markets cooled.

• Westchester prices slipped 4.3% month-over-month.

• Rockland dropped 7.1%, a sign that some buyers are pushing back against higher prices.

Across OneKey MLS’s full coverage area, the median sales price for single-family homes rose 5.3% year-over-year to $774,000.

Co-ops and Condos: A Split Market

While single-family homes remain Nassau’s hottest segment, co-ops and condos tell a mixed story:

• Co-ops: Median prices surged nearly 18%, jumping from $339,750 to $400,000. They’re selling faster too, with days on market dropping to 55.

• Condos: Prices dipped almost 6% year-over-year, from $882,000 to $830,000, while days on market stretched to 61.

For buyers, this means opportunities may exist in the condo market, where price growth has softened, while sellers of co-ops and single-family homes are enjoying a robust environment.

What It Means for Buyers and Sellers

For Nassau County homeowners thinking of selling, the numbers are clear: this remains a strong market, especially for single-family houses. Shrinking inventory and fast-moving sales suggest that properly priced homes will continue to attract eager buyers.

For buyers, patience and strategy are key. While prices are high, Nassau’s desirability—top-rated schools, proximity to New York City, and suburban lifestyle—keeps demand steady. Co-ops and condos may provide more entry points for those priced out of single-family homes.

FAQ: Nassau County Housing Market – September 2025

Q: What is the current median price of a single-family home in Nassau County?
The median price is $875,000 as of August, up 5.4% from last year.

Q: Are homes in Nassau still selling quickly?
Yes. The average single-family home sells in just 36 days—faster than last year’s 44 days.

Q: Is inventory improving for buyers?
No. Inventory fell 10.2% year-over-year, with fewer than 2,100 single-family homes on the market in August.

Q: How are condos and co-ops performing compared to single-family homes?
Co-ops are surging in price, up nearly 18% to $400,000, while condos slipped 5.9% to $830,000.

Q: Should sellers list their homes now or wait?
With inventory tight and demand high, current conditions remain favorable for sellers—especially for single-family homes.