Waterfront Homes for Sale in Marathon, FL

This page tracks every Marathon listing whose MLS record reports waterfront (ocean, bay, Intracoastal, river, canal or lake frontage), by community, with live counts and asking prices, and the costs that come with the water.

173 waterfront homes are for sale or pending in Marathon, FL today across 69 communities. The median asking price is $1,499,000, from $300,000 to $35,000,000. Listings in Marathon without that feature have a median of $1,045,000. Most listings right now: Sea-Air Estates (52.0) (8), Ocean Isles Fishing (52.5) (8), Crains Sub (58.0) (6). Updated September 8, 2026 from the MLS.

Marathon waterfront homes by community

Click a community for its full guide: prices, HOA reality, insurance posture and the homes for sale. The 60 communities with the most waterfront homes listed are tabled; the rest follow.

Community	Waterfront Homes	New build	Median list	From
Sea-Air Estates (52.0)	8	1	$2,150,000	$499,000
Ocean Isles Fishing (52.5)	8	4	$543,950	$365,000
Crains Sub (58.0)	6	3	$10,722,500	$3,260,000
Grassy Key (58.9)	6	4	$3,037,500	$1,600,000
Coco Plum Beach (54.5)	6	3	$2,589,500	$1,649,999
Sombrero Properties (49.5)	6	0	$1,824,999	$1,249,000
Stirrup Key Sub (52.5)	5	0	$4,400,000	$2,199,000
Flamingo Island (49.5)	5	2	$2,149,000	$1,295,000
Key Colony Sub (53.0)	5	0	$1,349,000	$990,000
Sombrero Bch Village (49.5)	5	0	$1,295,000	$675,000
Bonefish Townhouses (54.5)	5	0	$1,175,000	$899,000
Marathon Beach (49.0)	4	4	$3,632,500	$3,475,000
Fat Deer Key (53.0)	4	1	$1,870,000	$1,245,000
Venice (52.0)	4	0	$1,444,000	$1,050,000
Sombrero Sub (49.5)	4	0	$1,074,000	$725,000
Bonefish Towers (54.5)	4	0	$522,499	$379,000
Coco Plum Terraces (54.5)	4	0	$422,499	$398,000
Coco Plum (54.6)	3	2	$3,690,000	$2,395,000
Lida Sub (51.5)	3	1	$1,699,000	$649,000
Sombrero Anglers C N (49.5)	3	0	$1,400,000	$1,399,000
Indigo Reef Marina Homes (52.5)	3	0	$1,199,000	$999,000
Seawatch (53.5)	3	0	$975,000	$795,000
Gulfstream Shore (Marathon) (52.0)	3	0	$899,000	$675,000
Sheryl Sub (50.5)	3	0	$895,000	$895,000
Tranquility Bay (48.5)	3	0	$849,000	$429,000
Gulfpointe (53.5)	3	0	$799,000	$729,000
Misc Sombrero Area (50.0)	2	0	$9,725,000	$3,450,000
Sunrise Isle (50.0)	2	2	$7,622,500	$7,495,000
Tinglers Island (49.5)	2	0	$7,147,499	$5,995,000
Vaca Village (49.5)	2	1	$4,994,500	$4,490,000
Roosevelt Point #1 (51.0)	2	0	$3,072,500	$2,995,000
Waloriss Sub (49.5)	2	0	$2,499,500	$2,100,000
Farara Shores (52.0)	2	0	$2,024,999	$1,250,000
Marameade Amd (49.5)	2	0	$1,579,500	$1,059,000
Little Venice (53.0)	2	0	$1,249,000	$999,000
Gulfstream Village (52.0)	2	1	$1,242,500	$760,000
J. G. Estates (59.5)	2	0	$719,000	$699,000
Island Club (50.0)	2	0	$522,000	$509,000
Tradewinds West (50.0)	2	0	$380,000	$370,000
Keys RV/Mobile Home Condominium (50.5)	2	0	$314,500	$300,000
Casa Manana Shores (50.5)	1	0	$9,500,000	$9,500,000
Thompson & Adams Sub (49.5)	1	1	$6,500,000	$6,500,000
Crane Hammock (49.5)	1	0	$4,999,999	$4,999,999
N Marathon Shores (51.5)	1	0	$4,500,000	$4,500,000
Treasure Island (50.0)	1	0	$4,390,000	$4,390,000
Sombrero CC Manor (49.5)	1	0	$3,299,000	$3,299,000
Overseas Estates (52.0)	1	0	$2,995,000	$2,995,000
S Marathon Shores (52.5)	1	1	$2,989,000	$2,989,000
Sombrero Isle (49.5)	1	0	$2,800,000	$2,800,000
Sombrero Anglers C S (49.5)	1	1	$2,395,000	$2,395,000
Dodge Sub (51.0)	1	0	$1,638,888	$1,638,888
Cobia Point Condo (49.0)	1	0	$1,600,000	$1,600,000
Yacht Harbor Island (53.5)	1	0	$1,499,000	$1,499,000
Halls Sub (48.0)	1	0	$1,400,000	$1,400,000
Edmonds Acre Tracts (50.5)	1	0	$1,279,000	$1,279,000
Harbor Isle (48.5)	1	0	$1,275,000	$1,275,000
Coral Colony (52.0)	1	0	$1,250,000	$1,250,000
Coral Lagoon Resort (53.0)	1	0	$1,200,000	$1,200,000
Little Venice #2 (53.0)	1	0	$939,500	$939,500
Puerta Del Sol (50.5)	1	0	$905,000	$905,000

Also with waterfront homes for sale: Faro Blanco (48.0) (1), Boot Key View (49.0) (1), Lemon Cove (50.0) (1), Lady Alexander (49.5) (1), Harbor Club South (50.0) (1), Coco Plum Villas (54.5) (1), Spanish Galleon (50.0) (1), Coral Club (50.0) (1), Marathon Country C W (49.5) (1).

What waterfront ownership really costs

Waterfront homes carry costs inland homes do not: flood insurance where the parcel sits in a FEMA special flood hazard area, higher windstorm premiums closer to open water, and upkeep for seawalls, docks and lifts. Before you offer, pull the FEMA flood zone for the specific parcel, ask for the seawall’s age and any inspection reports, and get an insurance quote in hand, not an estimate. Our flood insurance calculator and wind mitigation savings calculator show what the parcel will actually cost to insure.

Questions to ask about any waterfront listing

Is the water frontage deeded or association-owned? Is there a fixed bridge between the dock and open water, and what is the clearance? What did the seller pay for flood and wind coverage last year, and with which carriers? Has the seawall or dock been permitted and inspected? What is the finished-floor elevation? A local agent who works waterfront deals will know which canals hold depth at low tide and which carriers are writing in the area.

Common questions

How many waterfront homes are for sale in Marathon?

As of September 8, 2026, 173 Marathon, FL listings whose MLS record reports waterfront are active or pending, across 69 communities. The count updates with every MLS refresh.

What do waterfront homes cost in Marathon?

The median asking price today is $1,499,000, with listings from $300,000 to $35,000,000. Marathon listings without that feature have a median of $1,045,000.

Which Marathon community has the most waterfront homes for sale?

Sea-Air Estates (52.0) has the most right now (8), followed by Ocean Isles Fishing (52.5) (8), Crains Sub (58.0) (6), Grassy Key (58.9) (6).

Is a waterfront home always in a flood zone?

Not always, but most direct-frontage parcels are in a FEMA special flood hazard area, which means a lender will require flood insurance. The elevation certificate and the exact zone for the parcel decide the premium; two homes on the same canal can differ by thousands a year.

Keep exploring Marathon

Live data: floridakeys, refreshed with every MLS pull; this page rebuilds on every ship. Community-level aggregates only: active and pending residential listings in Marathon, FL whose MLS record reports waterfront. Prices are asking prices, not values. Property features and prices only; nothing on this page describes residents. Equal Housing Opportunity.

Listing data provided by Florida Keys MLS, Inc. Information is deemed reliable but is not guaranteed by the MLS to be accurate.