980 Mariner Dr, Key Biscayne, FL 33149 Property Records

Miami-Dade County property record for 980 Mariner Dr, Key Biscayne, FL 33149

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 3,098 sqft · built 1969
Lot Size	0.323 acres (14,070 sqft)
Owner	Individual Name on Record
Last Sale	$8,450,000 (Aug 2022)
Tax Bill	$108,206 (2025)
Deeds & Mortgages	Aug 2022 Sale & Mortgage
Flood Zone	Zone AE (high risk)
APN	`24-5205-011-0110`

Property Details

APN / Parcel Number

Primary APN	`24-5205-011-0110`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Stories	1 Story
Building Area	3,098 sqft Living Area
Gross Area	3,697 sqft
Flooring	Vinyl/Resilient

Exterior

Year Built	Built 1969
Effective Year Built	Effective 2010
Exterior Material	Stucco
Construction Type	Concrete
Lot Area	14,070 sqft (0.323 acres)
Lot Dimensions	150 ft deep x 93 ft wide

Exterior Amenities

Porch	Porch
Porch Area	287 sqft
Patio Area	650 sqft
Fence	Fence
Boat Access	Boat Access

Location & Zoning

Street Address	980 MARINER DR
City	KEY BISCAYNE
State	FL
Zip	33149-2400
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	2000:ESTATES,GENERAL
Legal Description	5 55 42 CAPE FLA SUB SEC 2 PB 70-67 LOT 4 BLK 6 & PROP INT IN & TO WATERWAY LOT SIZE 93.800 X 150 COC 21396-0690 06 2003 5
Legal Range	42
Legal Township	55
Legal Section	05
Legal Subdivision	CAPE FLA SUB SEC 2
Legal Block	6
Legal Lot Number	4
Jurisdiction	DADE FL
Township / Civil Division	KEY BISCAYNE
Census Block Group	1
Census Block	1017
Census Tract	4602

Owner

Source: Miami-Dade County records, as of February 13, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on Record
Co-owner	Co-owner on Record
Mailing Address	980 MARINER DR, KEY BISCAYNE, FL 33149-2400
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 18, 2022 · Amount on Record
Deed Sale	Aug 18, 2022 · Amount on Record
Prior Sale	Apr 6, 2010 · Amount on Record
Deed Document Number	2022R0654325
Deed Book / Page	33344 / 1990
Record Updated	Jun 8, 2026

August 2022: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	DADE FL
Recording Date	Aug 18, 2022
Property Address	980 MARINER DR, KEY BISCAYNE, FL 33149-2400
Document Number	0000654325
Book / Page	33344 / 1990
Map Reference	MB 70 PG 67
Instrument Date	Aug 17, 2022
Instrument	2022R0654325
Transaction Type	Transfer
Record Updated	Apr 2, 2024
Title Company	ATTORNEY ONLY, ATTORNEY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$50,700.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	430 GRAND BAY DR APT 707, 707, KEY BISCAYNE, FL 33149-1937

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	980 MARINER DR, KEY BISCAYNE, FL 33149-2400

Mortgage

Document Number	0000001995
Date	Aug 18, 2022
Instrument	33344/1995

Lender

Name	GOLDMAN SACHS BANK USA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Sep 1, 2052

Interest

Rate Type	Adjustable Rate
Rate	4.1%
Type Change Date	Sep 1, 2032
Change Frequency	6 Months
Min Rate At Change	3%
Max Rate At Change	9.1%
Index	Other
Margin	3
Max Rate	9.1%

Tax Assessment & Valuation

Source: Miami-Dade County assessment roll, as of July 1, 2025

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	$108,206.00 (+8.3%) Homeowner's exemption	$6,896,228 (+11.55%)	$7,812,572 (+26.37%) Land $6,683,250 Building $1,129,322
2023	$99,915.00 (+31.83%)	$6,182,116 (+18.55%) Land $5,022,990 Building $1,159,126	$6,182,116 (+18.55%) Land $5,022,990 Building $1,159,126
2022	$75,792.00	$5,214,888 Land $4,572,750 Building $642,138	$5,214,888 Land $4,572,750 Building $642,138

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 99.1% of the US · lower than 98.7% of Florida
Wildfire Likelihood	Under 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 209 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 · Fiber in parts of the area	2,000 / 250
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20

May also be available: Blue Stream.

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