11 Amboy Lane, Lake Grove, NY 11755

$999,999 · 4 bed · 6 bath · 3,694 sq ft · built 2026 · MLS# 1003980 · Active

Experience unparalleled luxury in this one-of-a-kind custom new construction located in the highly desirable Brittany Hills section of Lake Grove. Showcasing elegant stucco construction and offering approximately 3,694 square feet of above-grade living space plus a fully finished basement, this extraordinary smart home blends sophisticated architectural design with modern convenience. Step through the grand entry into a breathtaking double-height great room with approximately 25-foot ceilings, dramatic chandelier, and streams of natural light that create an extraordinary sense of scale and openness. The open-concept floor plan is designed for both luxurious…

Single-family homes in the Sachem Central School District sold for a median of $679,000 (typically $600,000–$750,000) across 523 recorded sales between Oct 7, 2025 and Oct 2, 2026, up 4.5% on the 12 months before. This home's $999,999 list price sits in the luxury single-family tier for the Sachem Central School District.

ZIP 11755 has about 3.3 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 $23,000 a year, this home's property tax runs roughly 109% above the $11,000 typical for Sachem 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