1047 Mariner Dr, Key Biscayne, FL 33149 Property Records

Miami-Dade County property record for 1047 Mariner Dr, Key Biscayne, FL 33149

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.5 ba · 3,111 sqft · built 1978
Lot Size	0.401 acres (17,483 sqft)
Owner	Company Name on Record
Last Sale	$7,950,000 (Feb 2022)
Tax Bill	$135,614 (2025)
Deeds & Mortgages	Feb 2022 Sale & Mortgage Jul 2019 Mortgage + 1 more
Flood Zone	Zone AE (high risk)
APN	`24-5205-011-0200`

Property Details

APN / Parcel Number

Primary APN	`24-5205-011-0200`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Stories	2 Stories
Building Area	3,111 sqft Living Area
Gross Area	4,389 sqft
1st Floor Area	344 sqft

Exterior

Year Built	Built 1978
Effective Year Built	Effective 2011
Exterior Material	Concrete Block
Construction Type	Concrete Block
Roof Type	Gable/Hip
Roof Material	Tile
Lot Area	17,483 sqft (0.401 acres)
Lot Dimensions	150 ft deep x 116 ft wide
Garage Area	230 sqft

Exterior Amenities

Pool Type	Pool with Hot Tub/Spa
Pool Area	36 sqft
Porch	Porch
Porch Area	394 sqft
Patio Area	600 sqft
Boat Access	Boat Access

Location & Zoning

Street Address	1047 MARINER DR
City	KEY BISCAYNE
State	FL
Zip	33149-2474
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	2000
Legal Description	5 55 42 CAPE FLA SUB SEC 2PB 70-67 LOT 13BLK 6 & PROP INT IN & TO WATERWAY LOT SIZE116.550 X 150 OR 17309-2509 0796 1 COC 21843-4577 10 2003 1
Legal Range	42E
Legal Township	55S
Legal Section	05
Legal Subdivision	CAPE FLA SUB
Legal Block	6
Legal Lot Number	13
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 October 21, 2026

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

Owner of Record	Company Name on Record
Mailing Address	928 W DEER HILL RD, PARK CITY, UT 84098-1348
Owner Type	Company
Vesting	Limited Liability Company

Deeds, Mortgages & Sale History

Date	Document
Feb 1, 2022	Warranty Deed, Transfer · Conventional Mortgage THE NORTHERN TRUST CO
Jul 26, 2019	Deed of Trust, Mortgage NORTHERN TR
Feb 8, 2019	Loan Modification, Mortgage · Line of Credit NORTHERN TR

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Feb 1, 2022 · Amount on Record
Deed Sale	Feb 1, 2022 · Amount on Record
Prior Sale	Aug 9, 1996 · Amount on Record
Deed Document Number	202294605
Deed Book / Page	32994 / 4676
Record Updated	Oct 29, 2026

February 2022: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	DADE FL
Recording Date	Feb 1, 2022
Property Address	1047 MARINER DR, KEY BISCAYNE, FL 33149-2474
Document Number	0000094605
Book / Page	32994 / 4676
Map Reference	MB 70 PG 67
Instrument Date	Jan 26, 2022
Instrument	2022R0094605
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	$47,700.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	201 SOUTH DR, MIAMI, FL 33166-5941

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	928 W DEER HILL RD, PARK CITY, UT 84098-1348

Mortgage

Document Number	0000004678
Date	Feb 1, 2022
Instrument	32994/4678

Lender

Name	THE NORTHERN TRUST CO
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Feb 1, 2052

Interest

Rate Type	Adjustable Rate
Rate	2.5%
Type Change Date	Feb 1, 2032
Min Rate At Change	2.75%
Max Rate At Change	7.5%
Index	Other
Max Rate	7.5%

July 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DADE FL
Property Address	1047 MARINER DR, KEY BISCAYNE, FL 33149-2474
Document Number	0000488125
Instrument Date	Jul 26, 2019
Transaction Type	Mortgage
Record Updated	Aug 30, 2019
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Husband and Wife
Address	1047 MARINER DR KEY BISCAYNE FL 331492474, KEY BISCAYNE, FL 33149-2474

Mortgage

Document Number	0000488125
Date	Aug 2, 2019
Book Page	031554/002607
Instrument	488125

Lender

Name	NORTHERN TR
Address	50 S LA SALLE ST, CHICAGO, IL 60603-1008

Agreement

Amount	Amount Recorded
Term	360 Months
Due	Aug 1, 2049

Interest

Rate Type	Adjustable Rate
Rate	3.12%

February 2019: Loan Modification, Mortgage

Document Type	Loan Modification
Jurisdiction	DADE FL
Property Address	1047 MARINER DR, KEY BISCAYNE, FL 33149-2474
Document Number	0000105590
Instrument Date	Feb 8, 2019
Transaction Type	Mortgage
Record Updated	Mar 4, 2019

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Husband and Wife
Address	1047 MARINER DR KEY BISCAYNE FL 331492474, KEY BISCAYNE, FL 33149-2474

Mortgage

Document Number	0000105590
Date	Feb 20, 2019
Book Page	031332/000221
Instrument	105590

Lender

Name	NORTHERN TR
Address	CHICAGO, IL 60603

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	60 Months
Due	Feb 19, 2024

Interest

Rate Type	Adjustable Rate

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	$135,614.00 (+12.63%)	$8,348,602 (+1%)	$8,980,498 (+18.33%) Land $8,304,425 Building $676,073
2024	$120,405.00 (+7.6%)	$7,589,639 (+9.47%) Land $6,905,785 Building $683,854	$7,589,639 (+9.47%) Land $6,905,785 Building $683,854
2023	$111,904.00 (+145.47%)	$6,933,069 (+144.68%) Land $6,241,431 Building $691,638	$6,933,069 (+1.52%) Land $6,241,431 Building $691,638
2022	$45,588.00 Homeowner's exemption	$2,833,517	$6,829,135 Land $5,681,975 Building $1,147,160

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

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	9.0 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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