ZIP Code 11749 Housing Market

📝 Local Market Notes

ZIP code 11749 in Suffolk County exhibits a distinct price trajectory characterized by significant volatility and recent acceleration. The Home Price Index (HPI) for this area surged from 222.71 in 2021 to 350.71 in 2025, representing a cumulative increase of approximately 57% over four years. This growth was not linear; after a sharp rise in 2022, the index experienced a slight contraction in 2023 before stabilizing in 2024. The most recent data point indicates a dramatic year-over-year appreciation of 28.36%, signaling a market that is currently overheating relative to its immediate historical baseline. This performance creates a stark divergence from broader regional trends. While the county recorded a modest 5.42% year-over-year increase and the state of New York grew by 3.55%, ZIP 11749’s 28.36% gain is nearly five times the county average. Such extreme outperformance suggests localized demand pressures or specific inventory constraints unique to this sub-market, rather than a reflection of general Suffolk County dynamics. Comparatively, nearby ZIP 11798 shows an HPI of 420.4 with 10.09% growth, while ZIP 11719 has declined by 4.75%, further highlighting the idiosyncratic nature of 11749’s current valuation. The sub-market character of 11749 appears to be a high-end, owner-occupied enclave. With an HPI of 350.7, the area commands a premium valuation compared to the county median home value of $578,400. The parent county’s high median household income of $130,686 and 82.2% owner-occupancy rate support the presence of affluent, stable residents. For prospective buyers, the practical takeaway is that entry into this specific ZIP code is currently challenging due to rapid price escalation. The 28.36% annual growth rate, set against a national 30-year mortgage rate of 7.40%, implies that monthly carrying costs are rising sharply. Residents and investors should note that this market is decoupling from county-wide averages, requiring a reassessment of affordability metrics specific to this isolated high-growth pocket.

Based on FHFA House Price Index data.