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Peak season runs $170 to $225 per head and off season runs $155 to $195, quoted for the Deluxe Wedding Package at 205 guests. Those figures sit on Sea Cliff Manor's own FAQ page, which makes this the only venue in this group publishing a real per person rate. The building is a hilltop Gold Coast house once called Sans Souci, looking out over Long Island Sound. The ballroom is 5,000 square feet and takes 205. One event at a time, stated by the venue rather than by a listing.
This is the best documented venue in the group, and the published range is still not your cost. Tax, service charge and gratuity all sit outside the $155 to $225, and none of the three percentages is published, so the real per head figure is higher by an amount nobody prints. The Knot's $165 starting price matches neither of the venue's own floors, so work from the venue's numbers. Ask for the three percentages and the season definitions in one email.
We read seacliffmanor.com including its FAQ, weddings and history pages, and the venue's listings on The Knot and Zola. Checked September 2026. First party means the venue’s own site or rate card; marketplace means The Knot, WeddingWire, Zola, Wedding Spot or similar. Nothing here is averaged or estimated.
The Knot's $165 starting price conflicts with the venue's own published floors of $155 off season and $170 peak.
Sea Cliff Manor publishes a per person range on its FAQ page, broken out by season. The Deluxe Wedding Package at 205 guests runs $170 to $225 per head in peak season and $155 to $195 off season. That is first party, and on Long Island it is close to unheard of.
Two caveats travel with it. The figures are quoted at a 205 guest count, which is the ballroom's maximum, so a smaller wedding may price differently. And the peak and off season months are not defined on the page, so you do not yet know which band your date falls into.
The marketplace numbers mostly corroborate. Zola publishes the same $170 to $225 Deluxe range and separately gives $155 off peak to $170 peak as starting figures. The Knot publishes a $165 starting price, which matches neither of the venue's own floors, the $155 off season or the $170 peak. We record that as a conflict and leave it standing. The Knot also says couples typically spend $29,000, which is a platform estimate rather than anything the venue said.
The venue's own history page says the house was built around the turn of the twentieth century as a hilltop Gold Coast mansion named Sans Souci, looking out over Long Island Sound. It later ran as a French restaurant, Sans Souci of Sea Cliff, before becoming Sea Cliff Manor.
What the page does not give is a construction year, an architect or an original owner. That is a real gap for a house being sold on its history, and it means any specific date you hear on a tour should arrive with a source attached. Ask where the number comes from.
The modern work is described honestly enough. Dressing suites and a speakeasy bar were built into the original architecture, which reads as a finished renovation rather than one in progress. Two private dressing suites are published, along with a covered porch with French doors, gardens, and a sea wall used for photographs.
The Main Ballroom is 5,000 square feet and holds up to 205 guests seated. Zola agrees at 205 seated and 205 standing. The Knot files the venue in a 201 to 250 band, which overstates the venue's own figure, so use 205 and plan the list around it.
Exclusivity is first party here and it is stated plainly: one event at a time, with exclusive use of the whole estate. The Knot corroborates with a one wedding per day guarantee. A published price and a published exclusivity policy together is a combination we did not find anywhere else in this group.
The ceremony has more than one home. An outdoor Garden Veranda looks over the Sound, gardens and grounds run from ceremony through to cocktails, and The Knot lists an indoor fireplace ceremony option. No separate ceremony or cocktail capacity is published, which is the one gap in an otherwise good disclosure record.
The FAQ is direct about this and silent on the amount. Tax, service charge and gratuity are all charged in addition to the per head price, and no percentage is published for any of the three.
That matters more here than at a hall quoting $99. On a base of $170 to $225 per head, an unquantified service charge and an unquantified gratuity move the total by a lot, and there is no published figure to model with. Get all three percentages in writing, and confirm whether sales tax is calculated on the service charge as well as on the food.
Site fees are simpler. There is no reception site fee. The Knot gives a $1,500 ceremony fee. Zola gives $1,500 or $1,950 depending on the date. The venue's own FAQ lists no site fee at all, so both ceremony figures are marketplace and they do not fully agree.
No food and beverage minimum and no guest minimum is published. The pricing is quoted at 205, which is a maximum rather than a floor.
This is the sort of specific rule most venues never write down. Outside vendors are permitted for entertainment, photography, videography and decor. Outside catering is permitted only for glatt kosher events, through approved partners. Everything else is catered in house.
If you need a glatt kosher kitchen, that exception is the reason to call. If you were hoping to bring a caterer for any other reason, the answer is no, and it is written down rather than implied. No outside vendor fee appears anywhere.
No end time or curfew is published. Zola describes a four hour reception inside the Deluxe package, which is a package length and not a stated cut off. The venue's own pages say nothing about hours at all.
The address is 395 Prospect Avenue in the Village of Sea Cliff, a small residential village on a hill above the water. A noise or end time restriction is entirely plausible in that setting, and no source publishes one, so we are not going to claim there is one. Ask what time the music stops and whether that time comes from the venue or from the village.
The rain plan is also unpublished. A garden veranda, a covered porch with French doors and an indoor fireplace option all exist, so the physical fallback is real. What is missing is the written call. Nobody states the deadline. Nobody names who makes the decision, or says whether moving indoors changes the price.
A 120 acre Lessing's estate in Woodbury whose wedding menu publishes a 22% administrative fee, one of the few on Long Island that prints the number.
A 1918 Roslyn Heights mansion restored to its 1920s look, with a 150 guest minimum and a peak season starting price of $35,000 on WeddingWire.
A 1910 Charles A. Platt house on 55 acres with 186 hotel rooms, a 220 seat ballroom indoors and a tent published for 700 outside.
A 1923 Tudor Revival house on 86 acres above Long Island Sound, rented as a venue only for a flat fee, with a caterer you hire yourself.
Members only for Mansion events since the Village's 9 April 2025 notice, on roughly 210 Sands Point acres with a Tom Doak golf course.
A 1916 Delano & Aldrich manor that says it books members and non members alike, with a $2,000 ceremony fee on WeddingWire and no per person rate anywhere.