Living off the grid often means having plenty of privacy, but it rarely comes with luxuries like a pickleball court, saltwater pool, and a private marina. That’s exactly what Howell Key, a nearly 10-acre private island in the Florida Keys, offers.

Accessible only by boat or helicopter, the island feels far removed from the mainland despite being just a five-minute ride from Summerland Key. At the center of the island is a 3,400-square-foot home with five bedrooms and four bathrooms. Cathedral ceilings and expansive hurricane-impact windows frame panoramic water views throughout the main living spaces, while a guest wing connected by a breezeway provides two additional bedrooms, its own living room, and a breakfast bar.

According to the $16.9 million listing held by Lisa Ferringo of Coldwell Banker Schmitt Real Estate Co., the island will support the future construction of an additional residence, subject to local approvals.

RELATED: This $39.5 Million Island in the Bahamas Comes With a Private Helipad and Deep-Water Marina

The island was developed in 2012 to offer modern comforts without relying on mainland utilities. A solar array supplies electricity, while a whole-house reverse osmosis system provides fresh water. The home was built with energy-efficient insulated panels, Hardie Board siding, a standing-seam metal roof, and impact-resistant windows and doors. It sits roughly 10 feet above the base flood elevation.

Beyond the saltwater pool, private marina, and pickleball court, the island offers a sandy beach, walking trails, and a collection of practical amenities, including a chicken coop, barn, and several outbuildings. A helipad facilitates arrivals by air, while the sale also includes a barge, tractor, golf cart, and mainland parcel for vehicle storage and boat access.

RELATED: A Brazilian Private Island Long Owned by a Celebrity Plastic Surgeon Lists for $100 Million

Howell Key has had just a few owners over the years. Monroe County Sheriff Berlin A. Sawyer reportedly once owned the island before inventor Mark H. Rhodes—who developed a mechanical timer used in parking meters and household appliances—acquired a large portion of it. The current owners, a Canadian real estate family, purchased the property through a Quebec-based trust in 2010 for about $1.2 million, according to property records. They first listed the island in 2024 for $21.9 million.

Click here to see more photos of the private island in Florida.