Key Biscayne Homes for Sale & Neighborhood Guide

Key Biscayne is the southernmost barrier island in the Miami chain. The Village occupies the middle third: Crandon Park, an 808-acre county park, sits to the north, and Bill Baggs Cape Florida State Park, about 400 acres, covers the southern third. The Atlantic is on the east, Biscayne Bay on the west. The only road on and off is the Rickenbacker Causeway, 5.4 miles long, opened in 1947 and rebuilt with the high-level William Powell Bridge in the 1980s.

The island stayed mostly coconut plantation until the Matheson family donated the Crandon land in 1940 and the causeway opened. Beginning in 1951 the Mackle Construction Company sold new houses here for $9,540 with $500 down, and those modest concrete-block homes on roughly 7,500-square-foot lots set the street grid you still drive today. Richard Nixon bought waterfront homes on the bay side in 1969 and the island became a familiar name nationally.

The Village of Key Biscayne incorporated on June 18, 1991, the first new municipality in Miami-Dade in over 50 years, and Hurricane Andrew hit fourteen months later. Three decades of rebuilding followed: a Village Green and community center, a K-8 public school, its own police and fire rescue, and now a long-term resilience program to raise roads and rebuild drainage.

Single-family houses fill the interior streets between Crandon Boulevard and the bay. Many started as three-bedroom, one-bath Mackle homes of about 1,200 square feet. From the 1980s on, owners added stories or tore down and rebuilt, so a block can hold a 1950s original next to a two-story house finished last year. Harbor Drive, Mashta Island and Holiday Colony carry the larger lots and most of the bayfront and canal-front homes.

The condo stock came in waves. Key Colony, four beachfront towers built between 1979 and 1981 with about 1,200 units, plus Casa del Mar, the Commodore Club and the Towers of Key Biscayne, date from the Nixon-era boom. In the 1990s the last two hotel parcels became Ocean Club, roughly 800 homes on 52 acres, and Grand Bay, 137 units completed in 1999. The Ritz-Carlton opened in 2001 and Oceana followed after 2012. There are no townhouse tracts and almost no rental garden apartments.

Everything runs through the Rickenbacker Causeway, which lands at Brickell and I-95. The toll is collected southbound only through SunPass. Downtown Miami is 7 driving miles; Miami International Airport is 19 miles; Miami Beach is 15 miles; Doral is 22 miles. There is no second exit, so a causeway closure or a weekend event at Virginia Key affects every trip.

On the island, Crandon Boulevard is the spine from the park entrance to the state park gate, with Harbor Drive as the bay-side loop. Distances are short enough that bikes and golf carts are common. Miami-Dade Transit runs bus service across the causeway; there is no rail.

Crandon Park brings a two-mile Atlantic beach, a marina at 4000 Crandon Boulevard with slips up to 80 feet, an 18-hole par-72 golf course, the Marjory Stoneman Douglas Biscayne Nature Center and the Crandon Tennis Center, 27 courts and a 13,800-seat stadium that hosted the Miami Open from 1987 to 2018. Bill Baggs holds the Cape Florida Lighthouse, first built in 1825 and rebuilt in 1847, and a beach that has ranked among the best in the country.

Between the parks, the Village Green, the Community Center and the Key Biscayne Branch Library form the civic core, with shops and restaurants along Crandon Boulevard and at Harbor Plaza and the Galleria. There is no hospital on the island; the nearest emergency rooms are in Brickell and Coral Gables.

Key Biscayne K-8 Center is the Miami-Dade County Public Schools home school for the island, kindergarten through eighth grade. The zoned high school is Coral Gables High School, about 11 miles away on the mainland. MAST Academy, the district's maritime and science magnet on Virginia Key, serves grades 6 through 12 by lottery, and the Village holds a priority-admission agreement for its Cambridge programs.

Private options on the island include St. Agnes Key Biscayne, Key Biscayne Community Day School and St. Christopher's By the Sea, plus several preschools. The Village runs its own police, fire rescue, public works and building department, and the county library branch sits beside the Village Green.

Start with the FEMA panel for the exact address. A barrier island carries high-risk AE and VE designations on many parcels, which means mandatory flood insurance with a federally backed mortgage and premiums that depend on elevation. Ask for the elevation certificate and get flood and windstorm quotes during the inspection period.

For condos, read the milestone inspection report, the structural integrity reserve study and the last two years of board minutes. Key Colony and other 1970s and 1980s towers have been through concrete restoration cycles; find out where the building is in its cycle and whether a special assessment is pending.

For houses, pull permits on every addition, since many Mackle homes were expanded in stages. Confirm seawall condition on bay and canal lots, and read the Village's stormwater assessment schedule.

Buyers on Key Biscayne compare a short list of streets and buildings they already know. A house listing sells on the lot, the flood elevation, the year of the roof and impact windows, and whether the permits are closed. A condo listing sells on the building's reserve position and the view line. Have the elevation certificate, wind mitigation report and permit history ready before photos.

Inventory here moves slower than mainland Miami and prices are negotiated in larger steps, so the first two weeks matter. Price against closed sales in the same building or street from the last six months, not against active listings.