Mamaroneck Beach & Yacht Club

Mamaroneck Beach and Yacht Club will not tell you whether you can book it. Its events page is headed The Perfect Venue for Members, then stops: it does not say that non members may book, and it does not say that they may not. We read the homepage, the events page and the about page on 11 September 2026, and all three are silent on the point. Meanwhile the same events page publishes an open Save Your Date inquiry form and lists weddings among its event types. The Knot carries a full wedding listing for the club with no membership caveat at all. So the honest answer is that the policy is unpublished, and the question belongs on your first phone call, before you fall for the property. Because it is an easy property to fall for. Twelve acres on a private peninsula on Long Island Sound. A clubhouse called Osborn Castle, attributed to McKim, Mead and White. A wine cellar usable as an event room, a 57 slip marina, and a club stated ceiling of 360 guests.

The clubhouse was a Gilded Age stockbroker’s house, and the club dates it two ways

The club’s about page says the estate was built for Charles Osborn, a Gilded Age stockbroker, to a design by McKim, Mead and White, and was once called the most beautiful private residence in America. It was converted first into a yacht club and then into a beach and yacht club, and the club describes itself as having run for nearly three quarters of a century.

The homepage tells it slightly differently, crediting the property to Stanford White in 1885. Those are compatible, since White was a partner in McKim, Mead and White, but the 1885 date appears on only one page of the club’s own site. Both versions are first party, and we print both.

Neither version is sourced to anything outside the club. That is normal for a clubhouse of this age and it is worth knowing anyway. If the McKim, Mead and White attribution is part of why you want the building, it currently rests on the club’s own say so.

What twelve acres on a peninsula actually contains

Osborn Castle, the historic main clubhouse, holds a ballroom and a wine cellar that the club presents as an event space. Outside there are formal gardens, a rose garden, a gazebo and a lawn used for ceremonies, a sandy beach with cabanas, a swimming pool with cabanas, nine tennis courts and a 57 slip marina.

The club publishes no capacity for any individual room. Its only guest figure is a property level one: up to 360 people, down to small gatherings. The Knot lists the venue at 300 plus, which is a different number, and neither source breaks it down by space.

If you are planning around a specific room, that room’s seated capacity is something you will have to extract by phone. The wine cellar in particular is the sort of space that photographs beautifully and seats forty. Ask for a number before you build a plan on it.

Nobody publishes a price, not even the marketplace

This is unusual and worth stating plainly. The club publishes no per person rate, no site fee, no food and beverage minimum and no service charge. The Knot listing, which normally carries at least a starting figure, publishes no starting price either. Inquiries go to the phone line at 914-698-1130 or the Save Your Date form.

That means you will be walking into a quote with no anchor and no comparison point. Ask for the per person rate by season and day of week, ask what the club adds for service and administration, and ask how the site fee is handled.

A club with a marina, a pool, nine tennis courts and cabanas has a cost base that a catering hall does not, and clubs recover that in different ways. Some fold it into the per person rate. Some add a facility fee. Find out which happens here before you compare this quote against anybody else’s.

The rain plan and the catering both come from The Knot, not the club

The Knot lists full service catering, bar and beverage service, bridal attendants, liability insurance and accommodation on site as provided. It also lists ceremony options as the rose garden, the gazebo, the lawn or an indoor backup. Those are the only sources we have for either subject.

The club’s own events page publishes no vendor policy, no approved list, no outside vendor fee and no wet weather policy. There is on site accommodation, and The Knot describes a beach bonfire after party and bridal suite access from early in the morning. Again, that is the marketplace talking.

None of it is implausible. All of it needs confirming, because a marketplace listing is written to attract inquiries and is not a contract. The bonfire in particular is the kind of detail that turns out to depend on a permit, a season and the fire marshal.

Members will be using the beach, the pool and the courts on your Saturday

This is the practical consequence of booking a working club rather than a venue. The property carries nine tennis courts, a pool with cabanas, a beach with cabanas and a 57 slip marina, and members pay for access to all of it.

Nothing published tells you what closes for a wedding and what stays open. Ask directly. Where do your guests park when the marina and the pool are busy. Is the beach yours for photographs or shared. Does the ballroom look out over people in swimsuits at four in the afternoon in July. These are answerable questions and none of them is rude.

The membership question, put the way we would put it

Do not open with whether they do weddings, because the page already says they do. Open with this: can a couple who are not members, and who have no member sponsoring them, sign a contract here. Ask for the answer in writing.

If the answer is yes, the next questions are exclusivity and timing. Find out what is closed on your date and what is not, and what time the music has to stop. If the answer is that a member must sponsor the event, everything else is academic until you find that member, and it is better to learn that in September than in March.