4321 ALTON RD, Miami Beach, FL 33140

4321 ALTON RD, Miami Beach, FL 33140 is a 5-bedroom, 5.5-bathroom residential - single family : 1 unit built in 1938 with 3,190 square feet of living space on a 9,600 square foot lot. The property is currently owned by PIERO FILPI TRS PIERO FILPI REVOCABLE 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 2024-08-08 for $3,385,000. There are 5 recorded sales for this property. The 2025 assessed value is $2,428,250 with a market value of $2,428,250.

This breaks down to $1,536,000 for the land and $892,250 for the building. The assessed value increased 44% from $1,685,547 in 2024. 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 $153,229, and the median home value is $1,162,800. The population density is 4,659 people per square mile.

There are active mortgage liens totaling $2,340,000 recorded against this property. 4321 ALTON RD, Miami Beach, FL 33140 is located in Miami Beach, Florida. Property records, tax assessments, sales history, and ownership information for this Miami Beach property are sourced from miami_dade County public records.

The complete ownership history of this property spans from 2013 to 2024, with 5 recorded transactions in the public record. The current assessed value represents 72% of the most recent sale price. Based on the most recent sale, this property traded at $1061 per square foot — a key metric for comparing value across Miami Beach's real estate market..