Castaway Key Houses For Sale

Mid-Tier
Ultra LuxuryAbove $1,000 per SqFt
High-End$650 - $1,000 per SqFt
Mid-Tier$400 - $650 per SqFt
Premium$300 - $400 per SqFt
Entry-LevelBelow $300 per SqFt
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0–30 favors buyers
30–100 favors sellers
Selling Speed
1.33
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20%+ Fast
8–19.9% Steady
Below 8% Slow
Inventory Supply
75
High
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0–3 Low
3–6 Balanced
6+ High
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2+/mo Active
0.75–1.99/mo Steady
Below 0.75/mo Quiet
Rating
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Community rating based on resident and buyer reviews
4.5+ Excellent
4.0–4.49 Good
3.0–3.99 Average
Below 3.0 Below Average
Results 6 of 6
Castaway Key, 621 Rum Rd, Upper Captiva, Florida 33924, image 1
Castaway Key, 621 Rum Rd, Upper Captiva, Florida 33924, image 2
Castaway Key, 621 Rum Rd, Upper Captiva, Florida 33924, image 3
$1,490,000 $100K
  • 3 Beds
  • 31/2 Baths
  • 2,481 SqFt
  • $601/SqFt
Mid-Tier
House for sale in Castaway Key
621 Rum Rd, Upper Captiva, FL 33924
Upper captiva canal home. Beautiful private views across the state park to pine island from this gorgeous 3 bedroom plus a den & 3.5 bathroom home. It has everything you would want from an island home including protected docking for your boats on a navigable canal which leads out to the gulf of mexico and the intracoastal waterway, an elevator to bring groceries and supplies up to the kitchen, all windows are hurricane impact windows, cedar ship-lap exterior siding, wood burning fireplace, an upper mezzanine area above the living room which could be a studio or office, plenty of room for guests, a beautiful kitchen with big windows showing the view to the state park, wide decks wrap around the house on both floors, a large screened-in pool with a shower and bathroom, new electric system inside and out, new roof, newly painted decks, newly painted exterior. Also, recent maintenance check on the elevator. The beach is just down the sandy path to a parking area with access to the widest beach on the island. This island home could be an exceptional income producing property. Please make an appointment to see this wonderful home soon.
Castaway Key, 4511 Conch Shell Dr, Upper Captiva, Florida 33924, image 1
Castaway Key, 4511 Conch Shell Dr, Upper Captiva, Florida 33924, image 2
$829,000 $30K
  • 3 Beds
  • 2 Baths
  • 1,352 SqFt
  • $613/SqFt
Mid-Tier
House for sale in Castaway Key
4511 Conch Shell Dr, Upper Captiva, FL 33924
Experience elevated island living in this beautifully designed 3-bedroom retreat, perched safely on one of the highest and driest points of the island. Enjoy gulf and bay views from your private third-story lookout. This property is a short golf cart ride from the beaches, the ferry, and resort-style amenities. Built with durability in mind, the home features new impact-rated windows and doors, a new standing seam aluminum roof, and new composite decking on the stair treads. The interior was recently updated with new kitchen cabinets and quartz counters. The largest bedroom on the second level includes a built-in home office nook plus plenty of sleeping and sitting spaces. Expansive wraparound screened and covered porches that invite seamless indoor-outdoor living on all four sides of the house, perfect for relaxing in the shade and capturing the seaside breezes. Fantastic opportunity to own your vacation home on a beautiful barrier island, but with peace of mind that you have a fabulous and safe location. Dock slip at the nearby island club marina also available for purchase.
Castaway Key, 4511 & 4501 Schooner Dr, Upper Captiva, Florida 33924, image 1
Castaway Key, 4511 & 4501 Schooner Dr, Upper Captiva, Florida 33924, image 2
$999,999
  • 3 Beds
  • 31/2 Baths
  • 1,608 SqFt
  • $622/SqFt
Mid-Tier
House for sale in Castaway Key
4511 & 4501 Schooner Dr, Upper Captiva, FL 33924
Exceptional double-lot island retreat! Ideally positioned on a rare double lot, this beautifully maintained north captiva island home offers enhanced privacy, extra space, and low-maintenance coastal living. This north captiva retreat offers more than just a home; it presents a rare opportunity for the lucky buyer to own an exclusive separate membership in captiva castaway beach. Just a short, scenic stroll from your front door, this membership grants you deeded access to arguably the finest 'sugar sand' private beach on the island. Enjoy this ultimate gulf-front luxury beach with its pristine, secluded shoreline reserved for a select few, ensuring your piece of paradise remains private and protected for years to come. Designed with a reverse floorplan, the home is filled with natural light and opens to lush tropical surroundings. The main living area, with its full-length sliding glass wall, allows the inside to flow seamlessly onto a spacious screened lanai (with premium “no-see-um” screen comfort) for bug-free open-air entertaining, lounging on the double hammock, or just enjoying the soft gulf breezes, creating indoor-outdoor living ideal for any occasion. The galley-style kitchen features a generous dining bar and walk-in pantry, while two private primary suites with en-suite baths and walk-in showers offer comfort and privacy. A versatile bunk room serves as a fourth sleeping area for additional guests. Extensive exterior “maintenance-free” recent upgrades set this home apart: impact-resistant doors and sliders, pgt energy-efficient low-e impact windows, composite decking, powder-coated aluminum railings, and premium composite siding (rated for up to 150-mph winds) that you never need to paint! Additional improvements include a new roof with transferable warranty, energy-efficient hvac systems with wi-fi thermostats, and updated appliances—delivering durability and low-maintenance ownership so you can spend more time on the beach and less time working on your house. Let your imagination wander! Create your personalized island paradise, as the adjacent surveyed lot, cleared free of brazilian pepper, provides valuable flexibility—ideal for lush gardens, a swimming pool, a 2nd guest house or creating an even larger private compound. Conveniently located near the beach access, ferry landing, and island amenities, this property has a history of strong rental potential. A rare opportunity to own a double-lot island home with upgrades, privacy, and expansion potential—all offered well below reconstruction cost. Schedule your private showing today and experience the island lifestyle firsthand!
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Castaway Key, 4561 Smugglers Dr, Upper Captiva, Florida 33924, image 1
Castaway Key, 4561 Smugglers Dr, Upper Captiva, Florida 33924, image 2
$634,900 $15K
  • 2 Beds
  • 11/2 Baths
  • 891 SqFt
  • $713/SqFt
Mid-Tier
House for sale in Castaway Key
4561 Smugglers Dr, Upper Captiva, FL 33924
Adorable island cottage on beautiful north captiva island with classic beach style. This bungalow offers three sleeping rooms, making great use of the space. The living room and kitchen area are full of charm with tongue-and-groove wood walls, an authentic coastal retreat style. The two levels of decking are great for watching sunsets and gathering with the family. The home is located on a valuable oversized lot, just a short stroll or golf cart ride to the nearest beach access. Plenty of room to add on or install a large pool and outdoor entertainment area. Impact windows and sliders throughout, plus new hardie-board siding. Don't miss out on the chance to affordably obtain your beach house dream goal on this one-of-a-kind island!
Castaway Key, 4541 Conch Shell Dr, Upper Captiva, Florida 33924, image 1
Castaway Key, 4541 Conch Shell Dr, Upper Captiva, Florida 33924, image 2
Castaway Key, 4541 Conch Shell Dr, Upper Captiva, Florida 33924, image 3
$1,495,000
  • 3 Beds
  • 31/2 Baths
  • 1,646 SqFt
  • $908/SqFt
Mid-Tier
House for sale in Castaway Key
4541 Conch Shell Dr, Upper Captiva, FL 33924
An island masterpiece! This elegant, custom-designed island estate blends traditional island-style charm with contemporary sophistication. The home's exquisite detailing and bold roof lines create a unique and timeless design. Sited on an oversized lot close to gulf beaches on a quiet sandy lane. Hardie board siding, pella impact windows, and electric storm shutters provide peace of mind. The private heated pool and screened outdoor entertainment area offer relaxation and island fun. Perfectly designed for high-volume vacation rentals. A grand two-story foyer welcomes you inside with an elegant winding wood staircase. Two spacious primary suites on the first level offer en suite baths with custom tile walk-in showers. The third guest bedroom enjoys its adjacent upgraded bath with a tub/shower. On the next level, the luxurious custom kitchen sparkles with granite countertops & stainless steel appliances. Deep dark wood cabinetry throughout the kitchen space offers elegantly curved corner cupboards for a sleek and functional appeal. Built-in yacht-style dining that seats 12+ in a three-side banquette uses the space ideally for entertaining. The living area meanders from the cozy tv/media area to covered screen porches and three levels of outdoor sundecks. Upstairs, the vaulted natural wood ceiling loft is a stunning focal point and versatile fourth sleeping space, offering gorgeous gulf views through expansive sliding glass doors. Step up to the top lookout deck, where panoramic vistas of the gulf and the island's natural beauty unfold. A rare blend of refined elegance and island serenity, this exceptional home is a magical seaside spot to enjoy your new island beach lifestyle.
Castaway Key, 660 Gulf Ln, Upper Captiva, Florida 33924, image 1
Castaway Key, 660 Gulf Ln, Upper Captiva, Florida 33924, image 2
Castaway Key, 660 Gulf Ln, Upper Captiva, Florida 33924, image 3
$3,995,000
  • 4 Beds
  • 41/2 Baths
  • 3,340 SqFt
  • $1,196/SqFt
Mid-Tier
House for sale in Castaway Key
660 Gulf Ln, Upper Captiva, FL 33924
Beauty & the beach is one of the most extraordinary gulf-front estate homes ever offered for sale on north captiva island! This custom-crafted contemporary residence sits on the central portion of the island's widest stretch of beach, providing greater long-term shoreline security and uninterrupted panoramic gulf views. A proven luxury vacation rental leader, this home generated over $360k in gross rentals in 2021.  The property booked over $250k in gross rentals in 2025, even with downtime for repairs and upgrades.  This is a rare opportunity to acquire both a premier vacation retreat and a top-tier rental asset. Designed with a striking stucco exterior, impact-resistant glass throughout, and a private interior elevator serving all three levels, the home delivers refined coastal architecture paired with modern convenience. The ground-level area provides a bonus room & bunk area, plus an extensive outdoor entertainment space with a pool, patio, outdoor kitchen & poolside bar, all connected by a private walkway to the island's most pristine sugar-sand beach. Inside, every space is meticulously planned & designed for elevated entertaining & relaxed luxury. Highlights include a gourmet chef's kitchen, a dramatic dining room crowned by soaring barrel-vaulted ceilings, and a formal living area wrapped in panoramic glass. A built-in fireplace with television above the hearth anchors the living space with warmth and elegance.  The two primary living levels were designed to capture the spectacular gulf and sunset views.   The 4 elegant bedroom suites provide marvelous spaces for you and your guests to experience five-star resort-style luxury sleeping accommodations. The top-level primary suite boasts panoramic beach views, an en suite bath with a walk-in shower, a dual-sink vanity, and a lockable owners' closet.  Imagine relaxing in the extra-deep soaking tub while you stare at the shimmering waters lapping the shoreline. The second primary suite, located just off the entertainment den/media room, offers excellent beach views & a luxury en suite bath with a walk-in shower. Two more north-facing guest suites create "family-suite-style" guest zones with a gulf-facing king bed suite & en suite bath, plus an adjacent bedroom & bath.  Opportunities to acquire a gulf-front estate of this caliber, location, and proven income performance are exceedingly rare on north captiva island. Beauty & the beach represents the very best of luxury island living!

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Subdivision Amenities

Beach Club Available
Internet Access
Underground Utility
Beach Access
None

Nearby Subdivisions

Mid-Tier
0.11 miles
For Sale (5)
$475K - $2M
Ultra Luxury
0.18 miles
For Sale (2)
$1.3M - $1.3M
High-End
0.26 miles
For Sale (4)
$150K - $1.3M
High-End
0.26 miles
For Sale (4)
$550K - $849K
Mid-Tier
0.26 miles
For Sale (2)
$1.5M - $3.3M

Schools

Scores

Walk Score®
Car-Dependent. Almost all errands require a car
13

100
Bike Score®
Bikeable. Some bike infrastructure
52

100
Sound Score®
Bearable noise
83

100
Airport Score
Close to airports. Noticeable airport activity
0

100
Traffic Score
Congested area. Frequent traffic delays
21

100
Local Score
Limited local amenities nearby
0

100

Upper Captiva
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