Old Westbury, NY real estate market
The story of Old Westbury
Old Westbury sits split between the Town of North Hempstead and the Town of Oyster Bay in Nassau County, on the North Shore. The name history alone is worth knowing before you write a contract here. The area was first called Wallage, then Wood Edge by 1663, then Plainedge by 1675, before Henry Willis renamed it Westbury around 1683 after his hometown in Wiltshire, England. The Old got added around 1841 when the post office needed to tell it apart from a Westbury in Cayuga County, and the village kept that name when it incorporated in 1924, splitting off from what is now the separate Village of Westbury to its south.
The land here was Quaker farm country until the railroad arrived in 1836. After the Civil War, New York money moved in for the flat, wooded Hempstead Plains, building estates for horses, fox hunting, and polo at the Meadow Brook Polo Club. What got built still shapes the place. Westbury House, home of John Shaffer Phipps, is now open to the public as Old Westbury Gardens. Robert Low Bacon built Old Acres in an Italian villa style. Architect Thomas Hastings built his own house, Bagatelle, in 1908. The A. Conger Goodyear House, designed by Edward Durell Stone in 1938, was added to the National Register of Historic Places in 2003 specifically to keep it from being torn down for subdivision. A former Whitney estate is now split between the Old Westbury Country Club and the New York Institute of Technology, and a 187 foot tower built as a water tower for the Cornelius Vanderbilt Whitney estate did lookout duty in World War Two before becoming the golf club's landmark feature today.
The village boundaries have moved more than once. In a 1948 vote, 375 acres seceded from Old Westbury to become unincorporated land under the Town of North Hempstead, and part of that land became the Levitt built Roslyn Country Club development. A second piece was annexed by the Village of East Hills in 1949, which shifted police coverage there to the Nassau County Police Department. Old Westbury also fought the routing of the Northern State Parkway, pushing Robert Moses to move it five miles south, and the state later bought Charles E. Wilson's estate along the village edge for the Long Island Expressway. For anyone buying or selling here, that history matters on paper: check which town line a property sits on, since North Hempstead and Oyster Bay both reach into the village and services and tax bills follow the boundary.
Old Westbury at a glance
Verified numbers, 2026-07
Based on information from OneKey MLS, for the period July 1, 2026 through July 31, 2026. Figures from Realtors Property Resource. Information is not guaranteed.
What this means: buyers hold the upper hand in Old Westbury right now. Homes take longer to find a buyer, which gives you room to negotiate on price and terms, and makes pricing discipline everything for sellers. Value growth in plain words: at the published three year pace of 17.49 percent, a Old Westbury home worth $100,000 three years ago is worth about $117,490 today. One caveat, always: a median can move because different kinds of homes sold, not because values changed. The trend numbers matter more than any single month. Supply check, in plain words: at today's pace, everything for sale in Old Westbury would be gone in about 43 weeks.
The longer trend
If you are buying in Old Westbury
Time is on your side right now. Homes sit longer here, and that buys you leverage on price and terms. The edge is knowing which sellers are truly motivated and which are testing the market.
Ask Muds about buying hereIf you are selling in Old Westbury
Pricing discipline matters more than ever. Buyers hold the cards right now, and chasing the market down costs more than pricing right on day one. Start with what your home is actually worth today.
What is my Old Westbury home worthCommon questions about Old Westbury
What is the median home price in Old Westbury, NY?
As of 2026-07, the median sold price in Old Westbury was $2,500,000. Medians shift with the mix of homes sold, so treat it as a compass, not an appraisal.
Is Old Westbury a seller's market or a buyer's market?
Right now the numbers tilt toward buyers in Old Westbury, with about 10 months of homes on the market. That figure means how long it would take to sell every listed home at today's pace: a small supply favors sellers, a big one favors buyers.
How fast do homes sell in Old Westbury?
The median is 132 days on market as of 2026-07. Well prepared and well priced homes move faster than the median.
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Towns near Old Westbury
Same corner of the Island, different markets. Each guide carries its own verified numbers.