Bay Lane, Water Mill
Bay Lane in Water Mill is a public dead-end road ending at Mecox Bay, where the Town owns the parcel used by the Mecox Bay sailing club since 2018.
Bay Lane in Water Mill is a public dead-end road that ends at Mecox Bay. The Town of Southampton owns the parcel at the end. It was the site of the old Mecox Bay Yacht Club, which closed in 1990. The Town put sailboat racks there in 2014 and, after a court fight with neighbors, paid for a new clubhouse that was dedicated in June 2018. The road lies in unincorporated Town territory.
For a buyer, that is the central fact about the road. Bay Lane is a quiet lane with bay access at its end, and that access is public: a Town sailing facility, with the summer activity that comes with it.
The bay
Mecox Bay covers roughly 1,100 acres. The Town describes it as the largest barrier pond east of the Shinnecock Canal. A barrier pond is a coastal pond separated from the ocean by a beach. Its connection to the Atlantic is the Mecox inlet at the end of Flying Point Road, which the Southampton Town Trustees open to flush the bay. When the inlet is closed, the bay rises. When it is open, the bay drains toward mean tide. The State lists the bay as impaired water for nutrients and related problems.
That changing level is a property fact for any Bay Lane parcel near the water. It affects how much of a lawn floods, how a septic system performs and what a dock or bulkhead needs. The pond and bayfront guide explains the permit framework. The Trustees and NYS DEC both have jurisdiction at the shoreline.
History on the lane
The Town's 2014 draft historic survey lists 24 Bay Lane in the potential Hayground-Mecox Multiple Resource District, a group of historic farm-country properties scattered across Water Mill and Bridgehampton. That is a survey finding, not a designation, and no Town historic review applies today.
Buyer diligence
- Confirm whether the parcel has bay frontage in fee, a view only, or neither.
- Get wetland and flood-zone lines, and compare them with the bay's recent high-water periods.
- Confirm Trustee and DEC permits for any dock, bulkhead or shoreline work.
- Factor in the public sailing facility at the road's end: seasonal use, parking and noise.
- Filter comparable sales to Water Mill. Other Bay Lanes exist elsewhere on Long Island.
Nearby lanes
Mecox Road, Halsey Lane and Pauls Lane make up the rest of the Mecox grid. Flying Point Road leads to the inlet that sets the bay's level. Hamlet context: Water Mill.
Considering a Bay Lane property?
Request a private pricing review from The Roebling Research Desk for the specific Bay Lane parcel: bay frontage and rights, water-level and flood history, shoreline permits, the effect of the public facility, and the recorded sales that genuinely compare.
Recorded sales
Recorded sales through July 2026
9 recorded arm’s-length sales of 7 distinct properties since October 2016 (9 house).
1 single-parcel house sale in 2023–2025 — too few for a range or median; listed below.
| Sale date | Address | Type | Recorded price | Beds (roll) | Built (roll) | Flood zone |
|---|---|---|---|---|---|---|
| May 29, 2025 | 120 Bay Lane | House | $12,625,000 | 5 | 2000 | X (0.2%) |
| Oct 4, 2022 | 4 Bay Lane | House | $12,250,000 | 1 | 1991 | X |
| Jan 14, 2022 | 16 Bay Lane | House | $11,535,000 | 8 | 2014 | X |
| Mar 31, 2021 | 120 Bay Lane | House | $9,500,000 | 5 | 2000 | X (0.2%) |
| Feb 19, 2021 | 16 Bay Lane | House | $10,000,000 | 8 | 2014 | X |
| Oct 22, 2020 | 178 Bay Lane | House | $15,000,000 | 7 | 2014 | AE |
| Apr 6, 2018 | 86 Bay Lane | House | $18,375,000 | 5 | 2013 | — |
| Apr 3, 2018 | 39 Bay Lane | House | $5,500,000 | 11 | 2021 | — |
| May 2, 2017 | 76 Bay Lane | House | $11,250,000 | 5 | 2009 | X |
Sale date is the date of sale on the transfer form. Beds and year built come from the assessment roll where it records them. Source: New York State real property transfer record (form RP-5217, filed with every deed), arm's-length sales as flagged by the state. These figures are a separate series from the Roebling Index, which is built from published market reports. How these tables are built.
Flood and coastal exposure
6 of 38 residential and vacant parcels sit in FEMA’s 1% annual-chance flood area (zones VE, AE, A or AO), where a mortgage from a federally regulated or insured lender requires flood insurance on the building.
| FEMA zone | Parcels | What it means for an owner |
|---|---|---|
| AE — 1% annual-chance flood, base flood elevation set | 6 | A 1% chance of flooding in any year (about 26% over a 30-year mortgage). Flood insurance is required with a federally backed mortgage. A new or substantially improved house must have its lowest floor at or above the base flood elevation shown on the map; local codes can require more. |
| X (shaded) — 0.2% annual-chance flood | 6 | A 0.2% annual chance of flooding (the “500-year” flood). Flood insurance is not federally required, but it is usually available at lower rates and a lender may still ask for it. |
| X — minimal flood hazard | 26 | Outside the mapped flood areas. Flood insurance is not federally required. Flooding can still happen from heavy rain and drainage. |
Loans. In zones VE, AE, A and AO, any mortgage made, insured or bought by a federally regulated lender, Fannie Mae, Freddie Mac, FHA or VA requires flood insurance on the building for the life of the loan. A lender can require it in zone X as well. A cash buyer is not required to insure.
Premiums. Since 2021 the National Flood Insurance Program prices each house on its own features (elevation, distance to water, cost to rebuild), so the zone is a starting point, not the price. Private flood policies are an alternative. An elevation certificate is the document every insurer asks for.
Renovating. In the 1% flood area, if work on a house costs half or more of the building’s market value, or a storm damages it that badly, the whole house must be brought up to current flood rules, which usually means raising it. Plan a renovation budget against that line.
Zone at each tax parcel’s center point; part of a parcel can sit in a different zone. Source: FEMA National Flood Hazard Layer (Suffolk County, map 36103C), retrieved 2026-11-12; flood insurance rate map panels effective Sep 25, 2009. A parcel-level determination needs the current map panel, any Letter of Map Revision or Amendment, and an elevation certificate. State coastal erosion hazard areas are mapped separately and are not shown here. Flood and coastal-erosion guide.
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What buying, owning or selling here costs.
Peconic Bay CPF, mansion tax, title, MRT.
NY transfer tax, commission, attorney.
Taxes, flood and wind coverage, septic, upkeep.
Sell now, or rent the seasons and sell later.
A summer rental against owning the house.
Federal, NY, NYC and the nonresident payment.
Own on Bay Lane, Water Mill?
Request a pricing review of your property, prepared from the recorded sales on and around the road and what the public record shows about the parcel. Or ask about buying here.
646.939.7375 · c.cohen@compass.com
Considering a Hamptons purchase or sale?
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The Roebling Team at Compass is led by Corey Cohen, a New York licensed associate real estate broker. For the Hamptons we bring along a vetted Compass agent who specializes in the East End. This page and its calculators are research, not an offer of representation.