51 Hackensack Road, Mastic Beach, NY 11951
$339,990 · 2 bed · 1 bath · 504 sq ft · built 1947 · MLS# 980135 · Active
LOW TAXES!! Perfect starter home features 2 bedrooms, full bath, full unfinished basement, detached garage, on fenced in property! Roof only a few years old! No flood insurance needed ! Be the 1st!
Single-family homes in the William Floyd Union Free School District sold for a median of $510,000 (typically $430,000–$580,000) across 494 recorded sales between Oct 6, 2025 and Oct 2, 2026, up 5.2% on the 12 months before. This home's $339,990 list price sits in the entry single-family tier for the William Floyd Union Free School District.
ZIP 11951 has about 5.3 months of single family inventory — balanced market. Supply and demand are roughly even, so buyers and sellers share leverage with fair, predictable pricing.
At about $4,961 a year, this home's property tax runs roughly 38% below the $8,000 typical for William Floyd Union Free School District. Suffolk bills combine town, school and special-district levies, so two homes at the same price in neighboring districts can carry materially different taxes. Exemptions such as STAR, Senior or Veteran move the number as well — a new owner's bill is often not the same as the seller's.
OneKey MLS (recorded LI sales, trailing 12mo) + actual tax

Listings courtesy of OneKey® MLS as distributed by MLS GRID.
Based on information submitted to the MLS GRID as of October 11, 2026 2:30 am. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.
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Mastic Beach Market Trend
Over the past 2 years, Mastic Beach has strengthened — the median sale price has risen roughly 10% year over year to around $493K, and homes have generally been selling faster. Conditions continue to favor sellers; if the trend holds, prices could keep firming.
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Looking for off-market opportunities or a property attorney's read on this listing? Contact Joseph DeVito — Lic. R.E. Associate Broker + NY-licensed real estate attorney.
