400 HAMPTON LN, Key Biscayne, FL 33149

400 HAMPTON LN, Key Biscayne, FL 33149 is a 6-bedroom, 5.5-bathroom residential - single family : 1 unit built in 2011 with 4,388 square feet of living space on a 8,631 square foot lot. The property is currently owned by MATIAS CAVALIERI, recorded as of 2026-03-29. The owner appears to be owner-occupied based on the mailing address matching the property address.

The most recent sale was on 2011-05-23 for $2,520,000, when SOUTH BAY DEV XXI LLC sold to MATIAS CAVALIERI. The property has appreciated $1,075,000 (74%) since the prior sale of $1,445,000 on 2005-11-01. There are 3 recorded sales for this property.

The 2025 assessed value is $2,884,773 with a market value of $4,154,839. This breaks down to $2,244,060 for the land and $1,910,779 for the building. The assessed value increased 3% from $2,803,473 in 2024.

The property has the following tax exemptions: homestead. This property is located in FEMA Flood Zone AE, a Special Flood Hazard Area with a 1% annual chance of flooding (100-year floodplain). Flood insurance is typically required by lenders for properties in this zone.

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. 400 HAMPTON LN, 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 available through Miami-Dade County public records. The complete ownership history of this property spans from 1981 to 2011, with 3 recorded transactions in the public record. The current assessed value represents 114% of the most recent sale price.

Based on the most recent sale, this property traded at $574 per square foot — a key metric for comparing value across Key Biscayne's real estate market..