Single-family residence sells for $3.5 million in Key Biscayne

Published Jul 31, 2025

The spacious unit at 669 South Mashta Drive in Key Biscayne was sold on July 8, 2025 for $3,465,000, or $1,025 per square foot. The house, built in 1960, has an interior space of 3,382 square feet. The layout of this two-story house consists of three bedrooms and four bathrooms. The lot size of the property measures 10,000 square feet and features a pool for added enjoyment.

Additional houses that have recently been purchased close by include:

· A 2,255-square-foot home at 631 North Mashta Drive in Key Biscayne sold in March 2022 for $8,500,000, a price per square foot of $3,769. The home has 4 bedrooms and 3 bathrooms.

· In November 2021, a 3,202-square-foot home at 621 North Mashta Drive in Key Biscayne sold for $8,025,000, a price per square foot of $2,506. The home has 4 bedrooms and 5 bathrooms.

· At 730 North Mashta Drive in Key Biscayne in May 2022, a 4,225-square-foot home was sold for $7,200,000, a price per square foot of $1,704. The home has 3 bedrooms and 2 bathrooms.