Lake Grove, NY real estate market
The story of Lake Grove
Lake Grove sits in the Town of Brookhaven, out in Suffolk County, and the story here starts with a road, not a lake. Settlers moved in along Middle Country Road in the early 1700s, back when it was still the Old Kings Highway, a path first used by Native Americans. A building from 1818, home to the First Congregational Society of New Village, still stands, made the National Register of Historic Places in 2002, and its image is right on the village seal today. For a while nobody could settle on what to call this place either, cycling through Lakeland, Lakeville, New Village, Ronkonkoma, and West Middle Island before Lake Grove stuck in the mid 1800s, named for the tree groves near Lake Ronkonkoma.
The name changes track with growth. A post office opened in 1870 and ran mail out to Lakeland station by horse and wagon until that station closed in 1883. Early in the 1900s, Lake Ronkonkoma became a draw for recreation, and small summer homes went up on private roads through Lake Grove. In 1921 a new post office nearby took the name Centereach, splitting off part of the old identity. Around that time the Brook Lawn development went in along Stony Brook Road, and that patch eventually grew into what is now Stony Brook.
Lake Grove at a glance
Verified numbers, 2026-06
Based on information from OneKey MLS, for the period June 1, 2026 through June 30, 2026. Figures from Realtors Property Resource. Information is not guaranteed.
What this means: sellers hold the upper hand in Lake Grove right now. The typical home found a buyer in 13 days and sold for 108.6 percent of the asking price, which means buyers on average paid over the sticker. Value growth in plain words: at the published three year pace of 28.01 percent, a Lake Grove home worth $100,000 three years ago is worth about $128,010 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 Lake Grove would be gone in about 13 weeks.
The longer trend
If you are buying in Lake Grove
You are negotiating against the clock. The typical Lake Grove home goes in 13 days and sells over asking. Preparation wins here: financing lined up before the first showing, and a clear ceiling before the first offer.
Ask Muds about buying hereIf you are selling in Lake Grove
This is leverage. Use it with discipline. Over asking on average does not mean any price works: the homes that clear in 13 days are priced to create competition, not to test the ceiling. Start with what your home is actually worth today.
What is my Lake Grove home worthCommon questions about Lake Grove
What is the median home price in Lake Grove, NY?
As of 2026-06, the median sold price in Lake Grove was $782,500. Medians shift with the mix of homes sold, so treat it as a compass, not an appraisal.
Is Lake Grove a seller's market or a buyer's market?
Right now the numbers tilt toward sellers in Lake Grove, with about 2.89 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 Lake Grove?
The median is 13 days on market as of 2026-06. Well prepared and well priced homes move faster than the median.
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Towns near Lake Grove
Same corner of the Island, different markets. Each guide carries its own verified numbers.