571 S Mashta Dr, Key Biscayne, FL 33149 Property Records

Miami-Dade County property record for 571 S Mashta Dr, Key Biscayne, FL 33149

Property Summary

Property Type	Single Family Home
Details	6 bd · 4 ba · 2,761 sqft · built 1964
Lot Size	0.23 acres (10,000 sqft)
Owner	Company Name on Record
Last Sale	$2,945,000 (May 2021)
Tax Bill	$55,538 (2025)
Deeds & Mortgages	Oct 2025 Second Mortgage May 2023 Mortgage + 1 more
Flood Zone	Zone AE (high risk)
APN	`24-5205-009-0370`

Property Details

APN / Parcel Number

Primary APN	`24-5205-009-0370`

Interior

Bedrooms	6 Beds
Full Baths	4 Baths
Stories	1 Story
Building Area	2,761 sqft Living Area
Gross Area	3,722 sqft
1st Floor Area	2,761 sqft

Exterior

Year Built	Built 1964
Effective Year Built	Effective 1990
Exterior Material	Concrete Block
Construction Type	Concrete Block
Lot Area	10,000 sqft (0.23 acres)
Lot Dimensions	100 ft deep x 100 ft wide
Patio Area	390 sqft

Location & Zoning

Street Address	571 S MASHTA DR
City	KEY BISCAYNE
State	FL
Zip	33149-1732
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	2001
Legal Description	5-6 55 42 MASHTA ISLAND A REPLAT OF TRS A B & C PB 65-65 LOT 17BLK 4 LOT SIZE100.000 X 100 OR 16975-0825 1095 1 COC 24379-0228 03 2006 1
Legal Range	42E
Legal Township	55S
Legal Section	05
Legal Subdivision	MASHTA ISLAND
Legal Tract	A
Legal Block	4
Legal Lot Number	17
Jurisdiction	DADE FL
Township / Civil Division	KEY BISCAYNE
Census Block Group	1
Census Block	1022
Census Tract	4602

Owner

Source: Miami-Dade County records, as of October 21, 2026

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record	Company Name on Record
Mailing Address	789 CRANDON BLVD, 202, KEY BISCAYNE, FL 33149-2650
Owner Type	Company
Vesting	Limited Liability Company

Deeds, Mortgages & Sale History

Date	Document
Oct 3, 2025	Deed of Trust, Mortgage · Stand-Alone Second Mortgage ANTONIADIS ALLIANCE FUND LLC
May 23, 2023	Deed of Trust, Mortgage · Conventional Mortgage BRADESCO BAC FLORIDA BANK
May 5, 2021	Warranty Deed, Transfer ATTORNEY ONLY, ATTORNEY

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	May 5, 2021 · Amount on Record
Deed Sale	May 5, 2021 · Amount on Record
Prior Sale	Mar 30, 2006 · Amount on Record
Deed Document Number	2021316824
Deed Book / Page	32489 / 3418
Record Updated	Oct 29, 2026

October 2025: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DADE FL
Property Address	571 S MASHTA DR, KEY BISCAYNE, FL 33149-1732
Transaction Type	Mortgage
Record Updated	Oct 22, 2025

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	571 S MASHTA DR, KEY BISCAYNE, FL 33149-1732

Mortgage

Document Number	0000749315
Date	Oct 3, 2025
Book Page	34968/435
Instrument	2025R0749315

Lender

Name	ANTONIADIS ALLIANCE FUND LLC
Address	MIAMI BEACH, FL 33141

Agreement

Type	Stand-Alone Second Mortgage
Amount	Amount Recorded

May 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DADE FL
Property Address	571 S MASHTA DR, KEY BISCAYNE, FL 33149-1732
Transaction Type	Mortgage
Record Updated	Apr 2, 2024

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	50 W MASHTA DR 6, 6, KEY BISCAYNE, FL 33149-2431

Mortgage

Document Number	0000347547
Date	May 23, 2023
Book Page	33719/2869
Instrument	2023R0347547

Lender

Name	BRADESCO BAC FLORIDA BANK
Type	Bank
Address	MIAMI, FL 33134

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jun 1, 2053

Interest

Rate Type	Adjustable Rate
Rate	6.25%
Type Change Date	Jun 1, 2026
Change Frequency	Annually
Min Rate At Change	6.25%
Max Rate At Change	8.25%
Index	1-Year T-Bill
Max Rate	12.2%

May 2021: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	DADE FL
Recording Date	May 5, 2021
Property Address	571 S MASHTA DR, KEY BISCAYNE, FL 33149-1732
Document Number	0000316824
Book / Page	32489 / 3418
Map Reference	MB 65 PG 65
Instrument Date	Apr 9, 2021
Instrument	2021R0316824
Transaction Type	Transfer
Record Updated	Apr 2, 2024
Title Company	ATTORNEY ONLY, ATTORNEY

Transaction

Amount	Amount Recorded
Tax	$17,670.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	1650 NW 118TH AVE, PLANTATION, FL 33323-2300

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	789 CRANDON BLVD APT 202, 202, KEY BISCAYNE, FL 33149-2650

Tax Assessment & Valuation

Source: Miami-Dade County assessment roll, as of October 21, 2026

Property Jurisdictions

Type	Name
State	Florida
County	Miami-Dade County
Municipality	Key Biscayne Village
Unified School District	Dade County School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$55,538.00 (+8.85%)	$3,355,961 (+1.22%)	$3,620,281 (+9.19%) Land $3,100,000 Building $520,281
2024	$51,023.00 (+3.45%)
2023	$49,320.00 (+19.66%)	$3,315,514 (+31.5%) Land $2,850,000 Building $465,514	$3,315,514 (+31.5%) Land $2,850,000 Building $465,514
2022	$41,218.00	$2,521,384 Land $2,050,000 Building $471,384	$2,521,384 Land $2,050,000 Building $471,384

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective January 25, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone AE high risk
100-Year Floodplain	Yes 1% annual chance
Floodway	No
Base Flood Elevation	10.0 ft
Flood Insurance Requirement	Required federally backed loans
Flood Insurance Cost	Premium on Record median of 201 policies
Community Rating System	Class 8 (10% premium discount)
Nearby Flood Policies	201 in force
Nearby Flood Claims	312 (1979–2024)
Claims Outside the SFHA	1 of 312
Most Recent Claim	Jun 2024 · rainfall accumulation
Claims by Event	Hurricane Irma, Sep 2017 · 38 claims Hurricane Wilma, Oct 2005 · 26 claims Hurricane Andrew, Aug 1992 · 195 claims

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Not rated no burnable land within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	MDWASA - MAIN SYSTEM serves 2,377,460 people · EPA ID FL4130871
Water Source	Groundwater
Last State Inspection	Dec 2023
Lead	3 ppb (2023) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	6 last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 247 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · Fixed Wireless · DSL	5,000 / 5,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20

Cell Coverage

5G (outdoors only) and 4G LTE

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