12 Mountain Street, Ronkonkoma, NY 11779

$550,000 · 3 bed · 2 bath · 1,222 sq ft · built 1965 · MLS# 1061438 · Active

Welcome to this inviting 3-bedroom, 2-bath ranch in Ronkonkoma, offering a thoughtful combination of recent improvements, everyday comfort, and practical living spaces. The beautifully renovated kitchen, updated within the past two years, serves as a welcoming centerpiece of the home, offering a refreshed space for relaxing, cooking and gathering. The convenient ranch-style layout is complemented by a full basement, providing additional space and flexibility with a separate entrance . Notable improvements include a roof replaced in 2019, a 200-amp electrical panel, and an oil burner and hot water tank approximately…

Single-family homes in the Middle Country Central School District sold for a median of $635,000 (typically $565,000–$710,000) across 528 recorded sales between Oct 6, 2025 and Oct 1, 2026, up 5.8% on the 12 months before. This home's $550,000 list price sits in the entry single-family tier for the Middle Country Central School District.

ZIP 11779 has about 2 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 $12,829 a year, this home's property tax is in line with the roughly $12,000 typical for Middle Country Central 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