585 Grand Boulevard, Deer Park, NY 11729

$639,900 · 3 bed · 1 bath · 3,091 sq ft · built 1968 · MLS# 1072051 · Active

Amazingly dormered property with an exceptionally expanded 2nd floor that remains unfinished, providing the incredible opportunity to expand your living space. The 1st floor comprises a beautiful entrance, spacious living room, 3 bedrooms, 1 full bathroom, den with sliders to the open backyard, tremendously expansive eat-in-kitchen, and an adjacent dining area. This great opportunity comes with a full basement and room on the 2nd floor is open for your preferred finishes. Imagine the possibilities.

Single-family homes in the Deer Park Union Free School District sold for a median of $695,000 (typically $640,000–$745,000) across 171 recorded sales between Nov 6, 2025 and Oct 30, 2026, up 6.6% on the 12 months before. This home's $639,900 list price sits in the entry single-family tier for the Deer Park Union Free School District.

ZIP 11729 has about 2.8 months of single family inventory — seller's market. Demand is outpacing supply, so homes sell quickly with firm pricing and limited room to negotiate.

At about $13,819 a year, this home's property tax runs roughly 15% above the $12,000 typical for Deer Park 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