Refine Search
Sort by
$397,000
620904 MLS
It is no secret that the Sombrero Beach neighborhood is one of the most highly sought after established neighborhoods in all of Marathon. Rarely does a vacant lot become available with a building right already attached to it. What makes this 7,125 sqft lot even more rare is that this one comes with approved plans to build a 4 bed, 3 bath, 1966 sqft living home with a 299 sqft rear porch & 75 sqft front porch by the well-respected local builders, Design Center. To make things even easier for the buyers, a local lender is offering up to 80% LTV Construction Financing, allowing you to purchase the lot and fund the construction all at once. It is important to note that this building right is designated SOLEY for local Marathon residents who will make this their Homesteaded primary residence for a minimum of 2 years. This provides a great opportunity for a local family to live in this incredible neighborhood that is walking distance to Sombrero Beach and minutes to Marathon High School. Don't miss the rare opportunity.

408 Calle Limon, Marathon

$790,000
620848 MLS
Discover one of the Florida Keys' most exceptional development opportunities in the highly sought-after Knights Key community of Marathon. This 8,000-square-foot multifamily lot offers breathtaking, unobstructed ocean views and a front-row panorama of the world-famous Seven Mile Bridge, one of the most iconic landmarks in the Keys. Perfectly positioned to capture spectacular sunrises and the refreshing Atlantic breeze, this rare parcel presents an incredible opportunity for developers, investors, or those looking to build a signature coastal project in a prime location. While the property does not include dockage or direct water access, its elevated setting and stunning open-water vistas provide the beauty of waterfront living without the maintenance of a seawall or dock.

30 W Kyle Way, Marathon

$75,000
620678 MLS
Vacant lot in the Key By the Sea community offering an ideal private storage opportunity, especially for a neighboring property owner seeking additional space for trailers, vehicles, or boats on a trailer. Living in an RV on this parcel is not permitted. Lot 8E measures approximately 31 feet in depth by 30.5 feet in width and is currently undeveloped with no structure in place. A Buyer may pursue a building right through the City of Marathon or acquire one privately in order to construct or place a code compliant structure in accordance with local regulations. Utilities including city sewer, water, and electric service are available within the community, and there are no impact fees related to prior utility installation. Key By the Sea offers convenient amenities including a boat ramp with direct Atlantic Ocean access, laundry facilities, a clubhouse, and pet friendly policies. Each parcel is individually owned with its own real estate number, and the monthly association fee is approximately $191. A rare and affordable opportunity to secure flexible use property in the Florida Keys, whether for private storage today or future building potential.

6099 Overseas Hwy Unit LOT 8E, Marathon

$799,000
620536 MLS
Cleared, waterfront, and ready for your vision -- this Marathon lot offers a rare opportunity to build in the heart of the Florida Keys. Located on picturesque 89th Street, this 6,440 sq ft waterfront parcel measures approximately 70' x 92' and features 70 feet of water frontage along a 45-foot-wide canal with direct access to open water. With an approximate 4-foot control depth and the ability to plane out once you reach the end of the canal, this property is ideal for boating, fishing, and enjoying the Keys lifestyle. The lot is ready for construction and includes a Transferable Building Right, house plans, and dock plans, giving the next owner a valuable head start. Build your custom Keys retreat with the layout, finishes, storage, colors, and materials that fit your lifestyle or investment goals. Weekly rentals are permitted, creating excellent income potential for those looking to build a vacation rental or investment property. New construction also offers major advantages, including modern building standards, easier maintenance, potential insurance benefits, elevated construction above flood levels, and the opportunity to build to today's wind-load requirements. Whether you are dreaming of a personal waterfront escape, a high-performing vacation rental, or a smart new-construction investment, this property offers exceptional potential in one of Marathon's most desirable boating locations. Don't miss this chance to secure a prime waterfront lot and bring your Florida Keys vision to life.

89th Street, Marathon

$330,000
620531 MLS
Canal-front lot in Key by the Sea, located at 6099 Overseas Highway, Unit 55W in Marathon, Florida. This waterfront property features a newly rebuilt dock and installed boat lift, offering immediate boating access to open water. Property includes an official Letter of Determination confirming a transferable building right. Buyers are encouraged to verify all development rights and intended use with the appropriate governmental authorities. A 2022 travel trailer is negotiable in the sale of the lot as personal property. Located in a waterfront community near marinas, restaurants, and shopping, this property offers convenient access to the Florida Keys lifestyle. Strong opportunity for investors, boaters, or buyers seeking canal frontage with existing dock infrastructure and flexible use potential.

6099 Overseas Hwy Unit LOT 55W, Marathon

$300,000
620323 MLS
Waterfront, buildable RV lot in Key By the Sea in the heart of Marathon! Enjoy 28' of water frontage with quick, direct ocean access. This lot has a spacious screened-in porch, a storage room, and plenty of dock space to relax and fish. A building right and the fifth-wheel currently on the site convey with this sale. Boat lifts are allowed. This is a a great buy for those looking to build a new, waterfront home down the road who want to utilize their RV till then. Also a great buy for those looking for a slip - at this comparable price, why buy just a slip in a marina when you can have a buildable lot AND a place to keep your boat and RV? Community amenities include a boat ramp, laundry room, clubhouse with big TV, pool table, kitchen, etc available for private parties, and an oceanfront pavilion area to take in the open Atlantic views. Proximate to grocery stores, shops, restaurants, Sombrero Beach and all things in Keys paradise on the water and on land. There's a lot of bang for your buck and this is priced to sell. FaceTime TOURS ARE AVAILABLE FOR QUALIFIED BUYERS.

6099 Overseas Hwy Unit 42E, Marathon

$599,000
620270 MLS
Have you been dreaming of your perfect Florida Keys island home & wondering where to build it? Look no further. Build your dream home on one of Marathon's most sought-after streets & waterfront neighborhoods. Tucked away on a quiet dead-end street just moments from Sombrero Beach, this exceptional homesite offers 65 feet of water frontage and the opportunity to create a custom island retreat in the heart of the Florida Keys. Located on desirable Treasure Road, this peaceful enclave is known for its privacy, family-friendly atmosphere, & unbeatable convenience. This is a street you only drive down if you live there, offering a sense of seclusion and tranquility while remaining close to everything Marathon has to offer. Depending on the design and elevation of the future home, buyers may enjoy peek-a-boo ocean views & refreshing breezes from upper-level living areas & balconies. Neighboring homes enjoy water views, showcasing the potential of this unique location. The property is currently in the City of Marathon's BPAS allocation system & ranked #17 in the most recent allocation round w/ 68 points. The seller has a newer set of plans for a 3-bed, 2-bath residence that may be submitted by the next owner, offering a valuable head start in the building process. Alternatively, buyers may choose to submit new plans designed to potentially increase allocation points and improve their ranking. Buyers should verify all BPAS & building requirements & permitting w/ the City of Marathon. You'll love the convenience of being just minutes from Sombrero Beach, restaurants, shopping, & grocery stores in a golf cart friendly neighborhood where daily errands, evening bike rides, & sunset beach walks are all w/in easy reach. Whether you're planning a primary residence, seasonal getaway, future vacation home, or weekly rental property, this rare waterfront lot offers the opportunity to build exactly what you've been dreaming of while enjoying the very best of the FL Keys.

Vacant 3A Vacant 3a Treasure Road, Marathon

$2,390,000
619872 MLS
Fast track your way to receiving a building permit for the home of your dreams. A stunning opportunity to build exactly what you envision for this beautiful ocean front lot, completely cleared and filled to grade. Preexisting home has been removed, thus allowing for a super fast permitting process. once your architectural plans have been submitted you could be breaking ground in two to three months. This 1/2 acre + lot is located in the heart of Marathon, walking distance to the popular Sombrero Beach and Park. There is a bike path/walking path that winds through the golf course, past Publix Shopping Center, the best beach in the Keys and lovely quiet neighborhoods. In five minutes you can be at the Marathon International Airport, Fishermans Hospital or Home Depot. Marathon is a friendly fishing and diving village with many restaurants and shops. The boating access from this lot will accommodate a boat with up to a 4' draft and the channel is clearly marked. Dock Permit readily obtainable.

88 A Tingler Ln, Marathon

$4,599,000
619871 MLS
Seize Your Dream with Fast-Tracked Building Permits!** Unlock the potential to construct your ideal oceanfront retreat on this exceptional estate-sized lot. This stunning 1.5-acre parcel is completely cleared and filled to grade, allowing for an expedited permitting process. With the preexisting home already removed, you can start building in just two to three months after submitting your architectural plans. (ROGO exempt) This property has been divided into two parcels, offering the flexibility to create one or two homes, depending on your vision. It's perfectly situated in the heart of Marathon, just a short stroll away from the renowned Sombrero Beach and Park. Enjoy access to a scenic bike and walking path that meanders through the nearby golf course and connects to the Publix Shopping Center, the best beach in the Keys, and charming neighborhoods. You'll find Marathon International Airport, Fisherman's Hospital, and Home Depot within a quick five-minute drive. Marathon is known for its friendly fishing and diving community, boasting an array of restaurants and shops. The boating access from this lot can accommodate vessels with a draft of up to 4 feet, and a dock permit is already applied for and readily obtainable. Don't miss this rare opportunity to make your seaside dream a reality!

88 Tingler Ln, Marathon

$199,000
619623 MLS
This is a property for someone thinking about the future, not just today. The lot measures 110' x 110' (just over a quarter acre), is cleared, and sits on a 100-foot-wide, boatable canal with quick access to open water. It's directly across from Cocoplum Beach, giving it a quiet, natural setting that's hard to find. You'll notice there are already homes on this street, including next door, and the two streets leading in show a similar pattern -- one side built out, the other still open. These larger parcels create space, privacy, and a peaceful feel tucked away from US-1. As it stands today, the lot does not meet current density requirements to be built on as a standalone parcel. A site condition letter from the City will be obtained and provided so buyers have a clear understanding of its current status. There are also three adjoining privately owned lots. While there are no guarantees, a future owner could explore the possibility of assembling multiple parcels or changes over time that may affect what's allowed. This is best suited for someone who understands the current limitations, doesn't need to build right away, and sees value in holding a unique piece of property for the long term.

Ave M, Marathon

$2,899,000
619491 MLS
Build your dream oceanfront home in the prestigious gated community of Sunrise Isle, a coastal island of just 20 properties located next to beautiful Sombrero Beach in the heart of Marathon. Build anytime you like as the property comes with a deeded City of Marathon Transferrable Building Right subject to the conditions of the City of Marathon. Generous 40,249 sq. ft. ocean and canal front lot (a rare find in the Keys) boasts approximately 104 ft. beach frontage and approximately 467 ft. deep water canal frontage with the option for boat dockage on two separate sides of the canal. A brand new concrete seawall offers superb boating access to both the Ocean and Gulf for world-class fishing and diving. Fly into Marathon's Jet Center just minutes away and once home walk to beautiful Sombrero Beach or enjoy golf, dining and shopping just seconds away. Don't miss this opportunity to build your custom waterfront home in the Fabulous Florida Keys.

94 Sunrise Dr, Marathon

$7,000,000
618926 MLS
'United States Bankruptcy Auction. The Listing Price is for MLS Purposes only. The Auction will take place Live via Zoom on Thursday, September 10, 2026 at 11 AM ET. Bidder Registration Packages and Qualifying Deposits are due on or before Tuesday, September 8, 2026 at 5:00 PM ET. https://www.dropbox.com/scl/fo/6zvlde9vkafsi4gyurrge/AFbZzVpEx4s1umkeSKne1Us?rlkey=9ejdq1stq5w01ifjwsdhdrzyh&st=nzppom5j&dl=0 Rare oceanfront development opportunity in the heart of the Florida Keys. Encompassing nearly 6 acres of pristine oceanfront land in Grassy Key, this exceptional parcel presents an ideal canvas for developers seeking to create luxury residential units with direct oceanfront and beach access. Surrounded by unspoiled natural beauty and tranquil beaches, the property offers immediate proximity to shopping, fine dining, spas, marinas, and world-class boating. Residents will enjoy unparalleled access to deep-sea fishing, scuba diving, snorkeling, and vibrant coral reefs, all set against the backdrop of the Keys' iconic turquoise waters. Located in Marathon, often referred to as the Heart of the Florida Keys, the site benefits from a highly desirable central Keys location, conveniently positioned between the Upper Keysâ€''such as Islamoradaâ€''and the Lower Keys, including Key West. Marathon is known for its rich maritime history, local airport, and accessibility, serving as a central hub comprising islands such as Vaca Key, Duck Key, and Grassy Key. A truly rare offering combining scale, location, and oceanfront presenceâ€''an exceptional opportunity to develop a legacy project in one of Florida's most coveted coastal destinations. Please read the broker's remarks for detailed information on this offering.

57478 Overseas Highway, Marathon

$405,000
617316 MLS
Rare opportunity to own an oversized half-acre (21,808 SF) dry lot in the highly desirable Coco Plum neighborhood of Marathon. Ideally located directly across from Coco Plum Beach, this oversized parcel offers beautiful ocean views and endless possibilities in one of the Florida Keys' most sought-after locations. Enjoy easy access to the beach, boating, fishing, dining, and all that Marathon has to offer. Large lots in this location are becoming increasingly difficult to find. Whether you're looking to secure a future investment or explore development opportunities, this property offers a unique chance to own a prime piece of the Florida Keys lifestyle. Wake up to breathtaking views, salty breezes, and quiet serenity. Don't miss this rare chance to build steps from the beach with panoramic water views. Buyer to verify all building and development requirements with the City of Marathon.

300 Coco Plum Dr, Marathon

$225,000
613017 MLS
SUNRISE OCEAN VIEWS! Charming Key By the sea Buildable RV lot walking distance to all the amenities and waterfront common grounds. Ocean views from the front and privacy on the back side with full grown natural landscape. Have your coffee overlooking the incredible Sunrise views. Build your Keys Cottage when you are ready. Owner started selection process with builder they have a 901 sq ft 3 bed 2 bath to fit the property All utilities in place for easy hook up. Resort features boat ramp with direct ocean access, fish cleaning table, pavilions on the water with seating to view the gorgeous oceanfront, new club house, multiple laundry facilities, pet friendly, on site management. Make this your full time home, vacation spot or keep as an investment property. There are always events happening in the vibrant community of Marathon! Call today for more information! Seller Financing possible for the right buyer. Seller will consider all reasonable offers

6099 Overseas Highway Unit 111E, Marathon

$2,950,000
614973 MLS
Ready to Build Your Dream Florida Keys Estate? This rare opportunity includes two large adjacent, cleared parcels, totaling 21,798 sq ft, in the heart of Marathon, already vested with a City of Marathon Market Rate Transferable Building Right, (TBR) — meaning no wait, no red tape - start building immediately! Positioned on a deepwater canal with 7.9' controlling depth, this location is ideal for large vessels and offers quick access to the open Atlantic, while providing protected dockage in a serene setting. Enjoy views toward the ocean from this extraordinary site. Dock permits are pending, and the sale includes a full set of architectural plans for a luxury residence complete with a private pool and pickleball court—all crafted by a respected local engineering firm and ready for permitting submission. Renderings of the completed home bring the vision to life and are featured in the listing gallery. No guessing, no waiting—just groundbreaking luxury. Watch the video Create your personal Keys retreat today.

246 & 248 Pescayo Ave, Marathon

$679,000
618347 MLS
Premium Waterfront Lot includes a building right/TBR - READY TO BUILD no waiting, INCLUDES 2 SETS OF HOUSE PLANS, The VACANT LAND PRICE is 679,000. Alternatively, you can choose to have the Seller coordinate the New Construction Project already planned to begin in 2026 at a completed price of 2,795,000. Breathtaking Views with Deep Water Protected 50 Ft Dockage! Discover your dream home in Marathon, Florida, offering 3,200 sq. ft. of luxurious living space. This 5-bedroom, 5-bathroom masterpiece features a private pool, elevator, and a stunning rooftop observation deck-perfect for enjoying epic sunsets over Boot Key Harbor. Work with Keys Dream Properties to customize your finishes, including interior and exterior colors, tile, quartz countertops, lighting, and plumbing fixtures. Tailor every detail to your taste and make this house truly your own. Located in the heart of Marathon, you'll enjoy easy access to endless shopping and dining options, from fine dining to casual eats. With a protected deep-water dock, you're minutes from both the Atlantic and Gulf, offering World-Class Fishing, Snorkeling-Diving, and Boating adventures. For those breezy days, Boot Key Harbor provides calm waters for social boating, complete with on-the-water dining and cocktails. Best of all, there are NO HOA FEES, and the property allows 7-day rentals, giving you the flexibility to offset your investment through vacation rentals in Marathon's thriving market. This home's combination of luxury, customization, and location offers the best of the Florida Keys Lifestyle. Construction scheduled to begin in 2026. Don't miss this rare opportunity to design and own your slice of paradise. Contact us today!

1021 27th St, Marathon

$3,549,000
614698 MLS
RARE 100' of waterfront re-development opportunity with DEEP WATER DOCKAGE APPROVED! 200' HIGHWAY FRONTAGE! Huge 74,890 SQ FT site with an approved Conditional Use PERMIT for 10 unit and 4 affordable staff group home units. 6 TBR's are available to add on, more are available. No TDR's required for pure commercial use! MIXED USE ZONING has many commercial-residential possibilities...for example: could go to 10 market rate units on site, or higher density with affordable housing, or boutique HOTEL if you bring transient rights, etc. Includes a RECERTIFIED two-story raised CBS 6,128 SQ FT building that could be used in so many different ways, includes 2,340 SQ FT of extra outdoor porches. BEST LOCATION near Vaca Cut for easy Ocean-Bay access, easy airport access, SHORT-TERM RENTAL FRIENDLY! Contact Peter and Ewa Schwarz for more info and a private viewing of this amazing opportunity to get into THE KEYS LIFESTYLE...live, work, business, family compound...you can do it all right here on the water!

14 125th St, Marathon

$239,000
618851 MLS
Seller Financing Available -- Prime Corner Lot with water views, in Marathon This vacant, cleared corner lot sits in one of Marathon's most convenient and high-visibility locations. Directly across from Racetrac, the public library, Marathon High School, Fishermen's Hospital, Starbucks, mini golf, City Marina, the boat ramp, and the events park, this property offers unbeatable access to the best of the Middle Keys. Seller will consider all reasonable offers. Whether you're looking to build, invest, or secure a strategic commercial or mixed-use opportunity, this lot places you at the center of Marathon's activity hub. Seller financing makes this an even more accessible opportunity. All information is deemed reliable but not guaranteed. Prospective purchasers should verify the information to their own satisfaction.

319 Tuskegee St, Marathon