Luxury Homes in Key Biscayne, FL

There are 115 luxury homes for sale in Key Biscayne, Florida right now, priced from $1.1M to $237M. The median list price is $3,550,000. That puts this segment 43% above the overall Key Biscayne median of $2,490,000 across 151 active listings.

These homes average 2,998 square feet of living area on lots averaging 0.33 acres. Average pricing runs $2,587 per square foot versus $2,424 citywide. The median year built is 1980. 33% of them include a private pool.

This segment averages 122 days on market, 7 days longer than the Key Biscayne average of 115. The median closed-sale price in Key Biscayne is $1,527,500. Deals close at 94.5% of list price. The absorption rate is 12.7%.

The largest concentration is in Biscayne Key Estates, with 9 available listings. The rest is spread across 46 other communities.

At this tier a meaningful share of inventory trades off-market or with delayed MLS exposure. Comparable sales are thin, so pricing depends on recent closings in the specific enclave rather than city-wide averages.

María Delgado works the South Florida market daily and can send you the full list with photos, association documents and recent comparables — in English or Spanish.