343 Chicken Valley Road, Upper Brookville, NY 11545

$3,700,000 · 4 bed · 4 bath · 6,122 sq ft · built 1949 · MLS# 955669 · Active

Move right into this stunning four-bedroom ranch residence set on 5.5 beautifully landscaped acres. Thoughtfully updated and impeccably maintained, this light-filled home offers an open-concept floor plan designed for today’s modern lifestyle. There is an updated one bedroom guest cottage and a separate office. Built on one level, the home showcases expansive floor-to-ceiling windows and doors that frame picturesque garden views and flood the interiors with natural light. The gracious living and dining areas are anchored by a striking double-sided stone fireplace, creating architectural interest and a warm, inviting ambiance.…

Single-family homes in the Locust Valley Central School District sold for a median of $1,230,000 (typically $815,000–$2,400,000) across 141 recorded sales between Oct 7, 2025 and Oct 1, 2026, down 12.2% on the 12 months before. This home's $3,700,000 list price sits in the luxury single-family tier for the Locust Valley Central School District.

At about $33,684 a year, this home's property tax runs roughly 98% above the $17,000 typical for Locust Valley Central School District. Nassau assessments run on a multi-year cycle, so the assessed value behind this bill can lag what the home actually sells for today. A sale does not automatically reset it, and 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