9 MITCHELL DUNES Lane, Amagansett, NY 11930

$39,000,000 · 7 bed · 9 bath · 8,000 sq ft · built 1994 · MLS# 934317 · Active

OCEANFRONT MANSION MASTERPIECE YOUR 5-STAR OCEAN RESORT PARADISE AWAITS!!! Simply beyond compare, it will be love at first sight with this awe-inspiring 8,000 SF custom oceanfront mansion retreat on two magnificent acres with 200 feet of private oceanfront. An artistic masterpiece of modern architecture, combined with a world-class private beach, breathtaking ocean views, and cool Atlantic breezes provides the ultimate setting for luxurious living, relaxation, inspiration, and unmatched privacy. Located off an exclusive private cul-de-sac lane, down a 400 foot-secluded drive, you are greeted with a contemporary masterwork of three…

Single-family homes in the Amagansett Union Free School District sold for a median of $2,600,000 (typically $1,850,000–$4,500,000) across 14 recorded sales between Dec 2, 2025 and Jul 10, 2026, down 20% on the 12 months before.

At about $36,000 a year, this home's property tax runs roughly 260% above the $10,000 typical for Amagansett 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