Browse All Sea Crest (50.5) Properties for Sale

934 68th St, Marathon

Big price drop and added value! 963 69th Street is a spacious 3-bedroom / 2-bath single-family home on a rare 10,000 sq ft lot in the heart of Marathon. Room for a pool, large driveway for vehicles or boat, metal + flat roof, and central A/C. Just 1 mile from a public boat ramp for easy water access. The lush, low maintenance yard surrounds you with a serene park-like setting. Sit in the shade of the mature trees and enjoy nature. Seller also owns the adjoining lot (MLS #615882) with transferable building rights—purchase both together for a discounted combined price of $850,000! Each property offered separately, or as a package deal.

963 69th St, Marathon

$350,000

609786 MLS

Property lines are approximate. Pending LOT Division. Parcel ID & Taxes to be determined. Connect with Listing Agents to get clarity. Explore a rare opportunity in Marathon, FL with this 10,000 square feet vacant land parcel. Included are rights to build, allowing you to realize your dream project in the heart of Marathon. Adjacent, a second lot available with a opportunity to make it a 20,000 SQ FT lot, with more Transferable Building Rights Available MLS #: 609437, 609438 & 609440. Whether a residential retreat or investment, this is your chance to own a slice in the Florida Keys.

938 68th St, Marathon

$520,000

3 Beds ⋅ 2 Baths ⋅ 618558 MLS

This 3-bedroom house with recent upgrades that include a kitchen, new flooring and central air. Property sits on a large lot that has plenty of fruit trees and detached storage unit that is currently being used as a art studio.

371 69th St, Marathon

$371,500

1 Beds ⋅ 1 Baths ⋅ 607485 MLS

Introducing this charming one-bedroom, one-bathroom Conch Cottage nestled in the heart of Marathon. This delightful residence exudes a sunny, coastal charm with its cheerful yellow exterior, evoking a sense of warmth and tranquility. Boasting a brand new metal roof in 2023 and durable Hardie board siding, this cottage has been thoughtfully designed with longevity and aesthetics in mind. The exterior is further adorned by a classic white picket fence, and a huge front yard adds an enchanting touch to the property's curb appeal. Plenty of room for multiple cars, boat trailers and even an RV. With its prime location, this cottage presents an incredible opportunity for those seeking a licensed 7-day rental property. Its proximity to Sombrero Beach ensures that guests will have easy access to the sun-drenched sands and crystal-clear waters, making it an ideal retreat for vacationers seeking a quintessential Florida Keys experience. Step inside to discover a cozy and inviting interior, thoughtfully appointed to maximize comfort and functionality. Whether you're looking for a tranquil permanent residence, a lucrative investment property, or a charming vacation getaway, this one-bedroom, one-bathroom Conch Cottage is sure to captivate your heart.

850 69th St, Marathon

$3,750,000

6 Beds ⋅ 7 Baths ⋅ 617070 MLS

Florida Keys luxury redefined! Experience this newly constructed 2025 oceanfront masterpiece perfectly balancing coastal elegance, craftsmanship, and timeless design. With 6 bedrooms, 6.5 baths, and 3,102 sq ft under air plus 2,000+ sq ft of balconies, it offers seamless indoor-outdoor living framed by endless turquoise views. An elevated infinity-edge pool merges visually with the Atlantic beyond. Inside, a bright open floor plan captures light, air, and ocean vistas. The great room flows into a designer kitchen and dining area, creating spaces that feel both connected and serene. Each ensuite bedroom is a private retreat, beautifully scaled and positioned for comfort and privacy. See Documents Tab for a full list of luxury features. Furnished and appointed throughout showcasing ''Design by Lily,'' the interior blends beach-cottage warmth with sophisticated Keys luxury. Custom furnishings, curated color palettes, and natural textures create a refined yet welcoming aesthetic. Every detail--from driftwood-toned floors to sculptural fixtures--exudes coastal elegance. Built by a long-time Florida Keys contractor with decades of local expertise, construction was overseen daily by the owners to ensure perfection in every finish and structure. Nothing escaped their eye, and it shows in the integrity and grace of the final result. Outdoor living shines with multiple covered terraces for dining and lounging, the infinity pool reflecting the sea, and gentle breezes completing the ambiance. The 157' dock ending in a 32' L-shaped terminus is complete. Newly built, fully furnished, and ready for immediate enjoyment, this residence is a rare opportunity--an oceanfront sanctuary minutes from the Marathon airport's two FBOs. Whether a private retreat or luxury vacation investment, this property embodies comfort, craftsmanship, and coastal allure.

1000 68th St, Marathon

$1,700,000

3 Beds ⋅ 6 Baths ⋅ 617835 MLS

Exceptional opportunity to acquire a stabilized, fully leased multi-tenant commercial property in the heart of Marathon. Strategically positioned along US-1, this two-story 4,858 SF concrete building offers outstanding visibility, strong traffic counts, and reliable income from a diverse tenant mix. The property consists of three (3) commercial retail/office units on the ground floor and three (3) residential apartments on the second floor, providing a balanced combination of commercial and residential income streams. With long-term tenants in place, this asset delivers immediate cash flow and minimal vacancy risk. Situated on a 10,465 SF (0.24-acre) parcel, the site includes 5,586 SF of asphalt parking, supporting both tenant and customer convenience. The property is surrounded by strong commercial activity including restaurants, marinas, retail centers, and medical facilities, ensuring consistent demand.

6799 Overseas Hwy, Marathon

$160,000

605960 MLS

Discover the perfect canvas for your dream retreat in Marathon, Florida Keys! This incredible double lot, measuring 100 x 100 feet, is a rare gem awaiting your creative vision. Located in a prime area, just moments away from pristine beaches and a plethora of shopping and dining options, this vacant lot offers endless possibilities. Imagine designing your own slice of paradise, where you can build a custom home tailored to your unique preferences. With fill already added to the lot, you'll have a head start, saving valuable time and resources. Don't miss out on this fantastic investment opportunity! Red Lines are approximate.

532 69th St, Marathon

$685,000

3 Beds ⋅ 2 Baths ⋅ 605746 MLS

Why Rent When You Can Own in Marathon's Prime Spot? Ideal for Retirees, Investors, and First-Time Buyers! Dive into the opportunity of a lifetime in Marathon's heart. Presenting a pristine three-bedroom, two-bathroom haven, crafted with a blend of elegance, warmth, and practicality. As you step in, feel the welcoming ambiance of a home that's been cared for with love. Need an office or a gym? The two bonus rooms can be whatever your heart desires! Whip up gourmet meals in a kitchen with nice appliances. Enjoy modern upgrades like a tankless water heater and a metal roof, ensuring you're set for years to come. Imagine weekends in your expansive yard, hosting BBQs by the above-ground pool, shaded by charming gazebos. And parking? There's plenty for everyone. Location is everything! Beaches, groceries, medical facilities, shopping, and dining - all just a few miles away. And for families, top schools are just around the corner. Reach out now and embark on your Marathon home journey!

493 69th St, Marathon

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