620 N Mashta Dr, Key Biscayne, FL 33149 Property Records

Miami-Dade County property record for 620 N Mashta Dr, Key Biscayne, FL 33149

Property Summary

Property Type	Single Family Home
Details	5 bd · 6 ba · 4,867 sqft · built 2011
Lot Size	0.23 acres (10,000 sqft)
Owner	2 Individual Names on Record
Last Sale	$3,700,000 (Nov 2011)
Tax Bill	$62,084 (2025)
Deeds & Mortgages	Dec 2022 Line of Credit
Flood Zone	Zone AE (high risk)
APN	`24-5205-009-0210`

Property Details

APN / Parcel Number

Primary APN	`24-5205-009-0210`

Interior

Bedrooms	5 Beds
Full Baths	6 Baths
Stories	3 Stories
Building Area	4,867 sqft Living Area
Gross Area	6,356 sqft
Interior Walls	Wallboard/Drywall

Exterior

Year Built	Built 2011
Effective Year Built	Effective 2011
Exterior Material	Concrete Block/Stucco
Foundation Type	Footing
Roof Type	Gable/Hip
Roof Material	Metal
Lot Area	10,000 sqft (0.23 acres)
Lot Dimensions	100 ft deep x 100 ft wide
Garage Type	Carport
Carport	Carport

Exterior Amenities

Pool Type	Pool with Hot Tub/Spa
Pool Area	36 sqft
Porch	Porch
Porch Area	526 sqft

Location & Zoning

Street Address	620 N MASHTA DR
City	KEY BISCAYNE
State	FL
Zip	33149-1721
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	2001
Legal Description	MASHTA ISLAND A REPLAT OF TRS A B & C PB 65-65 LOT 1 BLK 4 LOT SIZE100.000 X 100 OR 18603-0908 0599 4 COC 24416-4866 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	1
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 shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on Record
Mailing Address	620 N MASHTA DR, KEY BISCAYNE, FL 33149-1721
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Nov 2, 2011 · Amount on Record
Deed Sale	Nov 2, 2011 · Amount on Record
Prior Sale	Oct 13, 2009 · Amount on Record
Deed Document Number	2011741235
Deed Book / Page	27881 / 2128
Prior Transfer Date	Sep 4, 2009
Prior Transfer Doc	0000416407
Record Updated	Oct 29, 2026

December 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DADE FL
Property Address	620 N MASHTA DR, KEY BISCAYNE, FL 33149-1721
Transaction Type	Mortgage
Record Updated	Apr 2, 2024

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	620 N MASHTA DR, KEY BISCAYNE, FL 33149-1721

Mortgage

Document Number	0000970130
Date	Dec 30, 2022
Book Page	33526/2620
Instrument	2022R0970130

Lender

Name	THE NORTHERN TRUST CO
Type	Bank
Address	CHICAGO, IL 60603

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	121 Months
Due	Jan 1, 2033

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

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	$62,084.00 (+3.62%) Homeowner's exemption	$3,935,173 (+5.99%)	$4,868,445 (+4.49%) Land $3,100,000 Building $1,768,445
2023	$59,916.00 (+3.63%) Homeowner's exemption	$3,712,884 (+3%)	$4,659,098 (+20.1%) Land $2,850,000 Building $1,809,098
2022	$57,818.00 Homeowner's exemption	$3,604,742	$3,879,424 Land $2,050,000 Building $1,829,424

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	Low lower than 96% of the US · lower than 96% of Florida
Wildfire Likelihood	0.01% annual chance
Exposure	None beyond 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