431 Dune Road, Westhampton Beach, NY 11978
$3,599,000 · 4 bed · 4 bath · 1,880 sq ft · built 1999 · MLS# 1035758 · Active
Location Location! Rare Dune Road Oceanfront Retreat! Experience the ultimate Hamptons lifestyle at 431 Dune Rd in Westhampton Beach. This breathtaking, contemporary, oceanfront home features 4 spacious bedrooms and 4 full bathrooms, each offering a private balcony with panoramic, unobstructed ocean views. The bright, open concept living area boasts soaring vaulted ceilings, floor-to-ceiling windows, and a cozy wood-burning fireplace. Enjoy seamless outdoor living, on the expansive ocean facing deck, ideal for entertaining, alfresco dining, or taking in the sea breeze. Complete with a primary suite fireplace, Moriches Bay access nearby,…
Single-family homes in the Westhampton Beach Union Free School District sold for a median of $2,200,000 (typically $1,375,000–$3,000,000) across 100 recorded sales between Oct 7, 2025 and Sep 29, 2026, up 16.7% on the 12 months before. This home's $3,599,000 list price sits in the upper single-family tier for the Westhampton Beach Union Free School District.
At about $14,446 a year, this home's property tax runs roughly 61% above the $9,000 typical for Westhampton Beach 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

Listings courtesy of OneKey® MLS as distributed by MLS GRID.
Based on information submitted to the MLS GRID as of October 11, 2026 3:30 am. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.
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Westhampton Beach Market Trend
After topping out near $3.02M around January 2026, Westhampton Beach's median sale price has settled back to about $1.42M, and homes are taking longer to find buyers. If this trend continues, conditions could keep easing toward a more balanced market.
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Looking for off-market opportunities or a property attorney's read on this listing? Contact Joseph DeVito — Lic. R.E. Associate Broker + NY-licensed real estate attorney.
