A private 300 foot beach on Long Island Sound, a ballroom with 20 foot water facing windows, and an inquiry form that never asks about membership.
The only capacity Greentree Country Club publishes about itself is the Classic Room, at up to 200 guests. Every larger number attached to this club comes from somewhere else, and those somewhere elses do not agree. The Knot says 300 plus. PartySlate says 300 seated and 300 standing. Manhattan Bride says 500 plus seated, 700 plus for cocktails and 400 plus under a tent. We print all of them and average none of them, because averaging invented numbers produces another invented number. On the question that decides whether you can even start, the club is unusually clear. You do not need to be a member. Its public contact page carries an open event inquiry form that asks for event type, guest count, time, date, cocktail hour and ceremony, and asks nothing about membership at any point. The membership the club actually sells is a summer beach and pool product for private beach, Olympic pool and cabana access, and nothing on that page conditions event booking on holding one. The Knot lists the club at a $10,200 starting price with no membership caveat.
One number here is first party and it is 200, for the Classic Room. The $10,200 and $11,700 are The Knot’s, they describe a whole wedding rather than a rate, and they exclude whatever service charge and tax the club adds. Ask for a written quote at your guest count with the service charge shown as a percentage. Ask what the Grand Ballroom actually seats, since the club has never published a figure for its main room. Then ask what an outside florist or band costs you.
The club’s home, Grand Ballroom, Classic Room, Waterfront Grounds, catering, memberships, vendors and contact pages, plus The Knot, PartySlate and Manhattan Bride listings. All read 11 September 2026. Checked September 2026. First party means the business’s own site or rate card. Marketplace means The Knot, WeddingWire, Zola, Wedding Spot or similar. Nothing here is averaged or estimated.
Four sources give four different capacities and only the Classic Room’s 200 is first party. If your guest list is above 200, do not rely on any published number for the Grand Ballroom.
The club’s Waterfront Grounds are a private 300 foot soft sand beach on Long Island Sound, with an ivy draped pergola and waterfront gardens used for ceremonies and photographs. That is the differentiator in a county where most clubs sell a lawn and a view.
Indoors, the Grand Ballroom has 20 foot floor to ceiling windows facing the water, crystal chandeliers, marble floors, LED lighting and its own private entrance. The Classic Room takes up to 200 under high ceilings with carved custom moldings and a skylight, and opens onto an enclosed cocktail hour balcony over the beach.
The bridal suites include make up stations and private dressing areas. The enclosed balcony is the detail worth noticing, because an enclosed cocktail hour space over the water is the one part of a waterfront wedding that usually falls apart in bad weather.
Here is the spread, with names attached. Greentree itself: Classic Room, up to 200, and no figure at all for the Grand Ballroom. The Knot: 300 plus. PartySlate: 300 seated, 300 standing. Manhattan Bride: 500 plus seated, 700 plus cocktail, 400 plus tented.
The three marketplace figures contradict one another as much as they contradict the club, which tells you they are estimates rather than measurements. If your list runs past 200, the Grand Ballroom number is the single most important thing to get in writing before anything else happens, and it should come from the club.
There is a fair way to ask it. The club publishes exactly one capacity, the Classic Room at up to 200, and nothing at all for the Grand Ballroom. Manhattan Bride’s 500 plus seated is the only figure covering the bigger room, and the club has not confirmed it. Give them your guest count, your table size and your band or DJ footprint, and ask them to put the Grand Ballroom’s seated number in writing.
Greentree’s homepage describes the property as a classic beauty designed by the New York architect Stanford White, and says the club has been family owned and operated for over 40 years. No founding year is published.
We could not corroborate the Stanford White attribution in any of the other sources we read. That does not make it false. It makes it a first party claim carrying no independent support, which is worth knowing if the architectural pedigree is part of why you are booking.
The club publishes no per person rate. Its catering page says to speak to the event team. Manhattan Bride recorded the club’s answer to a direct question about reception price per person as customized packages based on your price point, which is a polite way of declining to publish a number.
The Knot shows a $10,200 starting price and says couples typically spend $11,700. Both are marketplace figures for the whole wedding, not a site fee and not a per person rate. No food and beverage minimum, service charge, administrative fee or maitre d’ fee is published anywhere we looked.
Treat the gap between $10,200 and $11,700 with some suspicion. A starting price and a typical spend that close together make a narrow band for a venue with two rooms, a private beach and no published rate, and it is the kind of figure marketplaces generate from a thin sample. Both come from The Knot rather than from the club. Get your own quote.
Greentree caters its own events and also does off premise catering elsewhere. It publishes a recommended vendor page covering favors, floral decor, DJs, photography, rentals, photo booths and accommodation.
What that page does not say is whether someone who is not on it may work your wedding, or what it costs you if they do. Plenty of Westchester clubs charge for an outside vendor or refuse one outright. Greentree states neither position, so treat the list as a starting point and ask the direct question.
The off premise catering line is a small clue about the operation. A kitchen that also caters off site has capacity and staff beyond one room. That matters if your afternoon needs a ceremony on the beach and a dinner in the ballroom with a cocktail hour in between.
Three blanks in a row, and all three cost money when they surface late. There is no published curfew. There is no statement about whether the club runs one wedding at a time, and with two indoor rooms plus the grounds it plainly could run two. There is no rain policy, even though ceremonies are sold outdoors on the Waterfront Grounds.
Ask who else is in the building on your date, what time the music stops, and who decides at what hour to move a beach ceremony indoors.
The exclusivity question has a specific edge here. The Grand Ballroom and the Classic Room are separate rooms with separate entrances, which is exactly the configuration that lets a club sell two weddings on one Saturday. That is not an accusation. It is the reason to ask.
This is worth stating because it confuses people. Greentree does sell memberships. The Memberships page describes a summer product: the private beach, an Olympic pool, cabanas and the run of the place through the warm months. It is a family summer club membership.
Nothing on that page conditions booking an event on holding one, and the event inquiry form never asks. So a wedding here is a commercial booking like any catering hall, and the club’s members are people who swim there in July.
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