121 KNOLLWOOD DR, Key Biscayne, FL 33149

121 KNOLLWOOD DR, Key Biscayne, FL 33149 is a 5-bedroom, 6-bathroom residential - single family : 1 unit built in 1972 with 4,924 square feet of living space on a 13,947 square foot lot. The property is currently owned by MARKKU BIEDERMANN TRS MARKKU BIEDERMANN REV TRUST, recorded as of 2026-04-19. The owner appears to be owner-occupied based on the mailing address matching the property address.

The most recent sale was on 2019-12-05 for $100, when MARKKU BIEDERMANN sold to MARKKU BIEDERMANN TRS. The property sold for $4,299,900 less than the prior sale of $4,300,000 on 2018-07-31. There are 3 recorded sales for this property.

The 2025 assessed value is $4,137,983 with a market value of $7,342,052. This breaks down to $6,624,825 for the land and $717,227 for the building. The assessed value increased 3% from $4,021,364 in 2024.

The property has the following tax exemptions: homestead. The median household income in this area is $250,001, and the median home value is $2,000,001. The population density is 3,407 people per square mile.

121 KNOLLWOOD DR, Key Biscayne, FL 33149 is located in Key Biscayne, Florida. Property records, tax assessments, sales history, and ownership information for this Key Biscayne property are sourced from miami_dade County public records. The complete ownership history of this property spans from 2004 to 2019, with 3 recorded transactions in the public record..