Greenwich waterfront is the most sought-after coastal real estate in Connecticut. The combination of a sub-hour commute to Manhattan, town beach and marina access, and a fixed supply of Sound-front land makes these properties exceptionally valuable. Whether you are seeking a gated Belle Haven estate or a shoreline home in Old Greenwich, this guide covers what waterfront ownership in Greenwich actually involves.
| Metric | Greenwich (town) | Riverside | Old Greenwich | Cos Cob | Byram |
|---|---|---|---|---|---|
| Median Sales Price | $2,770,000 (SmartMLS, July 2026) (+8.2% YoY) | $3,025,000 | $2,755,000 (SmartMLS, July 2026) | $2,022,000 | $1,375,000 |
| Median Price / Sq Ft | — | $880 | $721 | $779 | $566 |
| Homes for Sale | — | 3 | 9 | 9 | 3 |
| Months of Supply | — | 0.9 | 3.2 | 2.4 | 2.0 |
| Median % of Last List Price | — | 105.6% | 104.3% | 101.6% | 106.2% |
The shoreline neighborhoods tell the story. Riverside, the most water-oriented of the group, carries the highest median at $3,025,000 and $880 per square foot, with less than one month of supply and sales closing above ask. Old Greenwich runs nearly as high. True direct-waterfront homes within these neighborhoods trade well above the neighborhood medians.
Waterfront property in Greenwich means direct access to Long Island Sound, its harbors, or the tidal Mianus and Byram rivers. True waterfront means your property lines extend to mean high water. That is different from a water view, and the difference drives price, flood insurance requirements, and dock eligibility. These properties offer more than scenery: private or association beach access, mooring and docking rights, and a maritime lifestyle inland homes cannot match.
Belle Haven is the crown jewel: a gated peninsula between Greenwich Harbor and Byram Harbor with expansive estates, a private club, and association amenities. Values here routinely run well into eight figures for direct waterfront.
Indian Harbor, Field Point, and Mead Point are the other gated and association waterfront enclaves near central Greenwich, each with deep-water access and estate-scale properties.
Old Greenwich offers shoreline living around Lucas Point and the streets near Greenwich Point Park (Tod’s Point), with a village center and its own train station. June 2026 median: $2,755,000 (SmartMLS, July 2026).
Riverside fronts the Sound and the Mianus River east of Cos Cob, anchored by Willowmere and the club scene along the water. It is currently the tightest market in town, with 0.9 months of supply.
Cos Cob wraps the Mianus harbor, with a working boatyard character, marina access, and a lower entry point at a $2,022,000 median.
Byram Shore Road in Byram offers genuine Sound frontage at the lowest price point of any Greenwich waterfront, plus Byram Park’s town beach, pool, and marina.
For detailed neighborhood information, visit our Greenwich community page.
Greenwich waterfront spans a wide spectrum. Byram Shore and Cos Cob harbor-area homes represent the entry point. The shoreline neighborhoods of Old Greenwich and Riverside occupy the middle and upper-middle of the market, with neighborhood medians of $2.75 million and $3 million respectively and direct-water positions above that. Belle Haven, Indian Harbor, and Mead Point estates form the top of the market, where direct waterfront with deep-water docking regularly commands eight figures.
Price variation within the waterfront segment comes down to a few factors: direct frontage versus water view, dock facilities and water depth, lot size, elevation relative to flood zones, and association amenities. A private deep-water dock is the single largest premium driver.
Waterfront scarcity in Greenwich is structural. Riverside had 3 single family homes for sale in June 2026. Byram had 3. Old Greenwich and Cos Cob had 9 each. Those counts cover entire neighborhoods; the direct-waterfront subset is a fraction of them. Riverside’s 0.9 months of supply means the neighborhood sells its entire inventory roughly every four weeks.
Buyers serious about Greenwich waterfront should expect to wait for the right listing and move quickly when it appears. Sales in the shoreline neighborhoods are closing above last list price: 105.6 percent in Riverside, 104.3 percent in Old Greenwich. Working with agents experienced in waterfront transactions, who understand dock requirements, flood zones, and maritime regulations, is critical. Check our Greenwich market report for current inventory and recent sales.
Nearly all Greenwich waterfront properties fall within FEMA flood zones. Properties in A, AE, or VE zones require flood insurance as a condition of mortgage financing. Elevation relative to Base Flood Elevation determines cost: finished living space above BFE pays substantially less than space at or below it, and finished lower levels below elevation raise both risk and premium considerably.
Request a flood elevation certificate from the seller and a written flood insurance quote before going to contract. FEMA maps are updated periodically, so verify the current designation rather than relying on an old listing sheet. Renovation plans should factor in elevation improvements and flood-resistant construction, which reduce both risk and insurance cost over time.
Private dock access defines the top tier of Greenwich waterfront. Properties with existing permitted docks command substantial premiums, and dock condition, water depth, pile integrity, and permitted capacity all affect valuation. Existing docks should be professionally inspected for structural soundness and regulatory compliance during due diligence.
New dock construction requires Connecticut DEEP permitting, Army Corps of Engineers approval for certain projects, and municipal coordination. It is a long and expensive process, which is exactly why an existing permitted dock carries the premium it does.
Mooring fields offer the alternative. Belle Haven and other associations maintain resident mooring fields, and the town operates marina and mooring facilities. Understanding dock rights and mooring options for a specific property is essential before offering.
Direct water access for boating, swimming, and paddling. Sunrise views over the Sound. Private or association beaches. The prestige of Connecticut’s most exclusive coastal addresses.
You also inherit obligations: mandatory flood insurance, dock and bulkhead upkeep, erosion management, salt-air corrosion, and storm exposure. Waterfront assessments run higher than comparable inland homes. Calculate the full annual carrying cost, insurance, maintenance, and taxes, before committing.
Greenwich waterfront neighborhoods put Manhattan within reach: express Metro-North service from Greenwich station reaches Grand Central in roughly 45 minutes, and Old Greenwich, Riverside, and Cos Cob each have their own stations walkable from parts of their shoreline streets. Driving to Midtown runs under an hour off-peak via I-95.
Greenwich Avenue provides the shopping and dining core. Greenwich Point Park (Tod’s Point) and Byram Park offer town beaches for residents. Yacht and beach clubs across the shoreline neighborhoods round out the maritime amenity set.
Belle Haven and the gated points showcase stone Mediterranean revival, shingle style, and classical estates from the early twentieth century. Old Greenwich and Riverside lean New England coastal: cedar, stone, pitched roofs, and porches oriented to the water. Contemporary rebuilds emphasize glass walls, indoor-outdoor living, and flood-resilient construction with elevated mechanicals. In flood zones, new construction and major renovations are built to current elevation standards, which is reshaping the look of the shoreline street by street.
Greenwich waterfront buyers are typically established executives, entrepreneurs, and finance professionals, many splitting time between Greenwich and Manhattan. International buyers remain a meaningful segment. The successful ones share traits: they understand flood and insurance implications before falling in love with a house, they prioritize dock capability and water depth if they boat, and they are financially prepared to move without contingencies when the right property lists.
Secure pre-approval with a lender experienced in high-value waterfront financing. For any serious candidate: obtain the elevation certificate and a flood insurance quote, hire a marine surveyor for docks and bulkheads, and review wetlands and environmental conditions. Verify dock permits and mooring rights, confirm association memberships, and get updated FEMA designations before closing.
Work with an agent who specializes in Greenwich waterfront. In neighborhoods closing above list with under a month of supply, preparation is the only leverage a buyer has.
Greenwich waterfront is Connecticut’s most exclusive real estate, and the June 2026 numbers show the window is narrow: single-digit inventory in every shoreline neighborhood and sales closing over ask. Qualified buyers who act decisively secure the finest properties.
Contact The Engel Team to schedule a private consultation on Greenwich waterfront opportunities. We know the market from Byram Shore to Belle Haven to Tod’s Point, and we work with the marine surveyors, flood insurance specialists, and attorneys these transactions require. Visit our Greenwich community page or review the Greenwich market report for current data.
© 2025 DOUGLAS ELLIMAN REAL ESTATE. ALL MATERIAL PRESENTED HEREIN IS INTENDED FOR INFORMATION PURPOSES ONLY. WHILE THIS INFORMATION IS BELIEVED TO BE CORRECT, IT IS REPRESENTED SUBJECT TO ERRORS, OMISSIONS, CHANGES OR WITHDRAWAL WITHOUT NOTICE. ALL PROPERTY INFORMATION, INCLUDING, BUT NOT LIMITED TO SQUARE FOOTAGE, ROOM COUNT, NUMBER OF BEDROOMS AND THE SCHOOL DISTRICT IN PROPERTY LISTINGS SHOULD BE VERIFIED BY YOUR OWN ATTORNEY, ARCHITECT OR ZONING EXPERT. EQUAL HOUSING OPPORTUNITY. 
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