26 Tennis Court Road, Oyster Bay, NY 11771

$6,995,000 · 6 bed · 7 bath · 9,999 sq ft · built 1993 · MLS# 1049317 · Active

Thalassa Bay is an extraordinary 9,900sf beachfront estate set upon 200ft of direct shoreline on the tranquil waters of Oyster Bay Harbor. This magnificent waterfront sanctuary offers an exceptional luxury lifestyle defined by water, light, privacy, and endless horizons, with an indoor swimming pool and spa, private one-bedroom guest apartment with separate entrance, 4-car garage, tennis court, six fireplaces, billiards room with wet bar, recreation room, expansive gardens, gazebo, and direct saltwater access for swimming, kayaking, boating, jet skiing, and water skiing. Invite family and guests to collect oysters and…

Single-family homes in the Oyster Bay-East Norwich Central School District sold for a median of $1,500,000 (typically $940,000–$2,275,000) across 84 recorded sales between Oct 8, 2025 and Sep 22, 2026, up 15.8% on the 12 months before. This home's $6,995,000 list price sits in the luxury single-family tier for the Oyster Bay-East Norwich Central School District.

ZIP 11771 has about 5.4 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 $72,452 a year, this home's property tax runs roughly 281% above the $19,000 typical for Oyster Bay-East Norwich 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