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Off-Grid Florida Keys Island With Helipad and Marina Lists for $16.9 Million

other · 2026-08-08

Howell Key, a private island spanning nearly 10 acres in the Florida Keys, is on the market for $16.9 million. This exclusive property, located just five minutes from Summerland Key, is reachable only by boat or helicopter. The residence, covering 3,400 square feet, boasts five bedrooms, four bathrooms, a guest wing, a saltwater pool, a private marina, a pickleball court, a sandy beach, and a helipad. Built in 2012, it operates on solar energy and includes a mainland lot for vehicle storage. The current owners, a Canadian family involved in real estate, acquired it in 2010 for approximately $1.2 million. The listing is managed by Lisa Ferringo from Coldwell Banker Schmitt Real Estate Co. Future construction of an additional home is possible, subject to local approvals.

Key facts

  • Howell Key is a nearly 10-acre private island in the Florida Keys.
  • The island is listed for $16.9 million.
  • The listing is held by Lisa Ferringo of Coldwell Banker Schmitt Real Estate Co.
  • The island is accessible only by boat or helicopter.
  • The main house is 3,400 square feet with five bedrooms and four bathrooms.
  • The island includes a saltwater pool, private marina, pickleball court, and helipad.
  • The island was developed in 2012 with solar power and reverse osmosis water system.
  • The current owners purchased the island in 2010 for about $1.2 million.
  • The island was first listed in 2024 for $21.9 million.
  • The island is a five-minute ride from Summerland Key.

Entities

Institutions

  • Coldwell Banker Schmitt Real Estate Co.

Locations

  • Florida Keys
  • Summerland Key
  • Howell Key
  • Florida
  • United States

Sources