631 Warren Ln, Key Biscayne, FL 33149 Property Records

Miami-Dade County property record for 631 Warren Ln, Key Biscayne, FL 33149

Property Summary

Property Type	Single Family Home
Details	5 bd · 5.5 ba · 3,712 sqft · built 2016
Lot Size	0.172 acres (7,500 sqft)
Owner	2 Individual Names on File
Last Sale	$3,050,000 (Jun 2018)
Tax Bill	$42,553 (2025)
Deeds & Mortgages	Feb 2023 Line of Credit Jan 2022 Mortgage + 1 more
Flood Zone	Zone AE (high risk)
APN	`24-5205-001-0710`

Property Details

APN / Parcel Number

Primary APN	`24-5205-001-0710`

Interior

Bedrooms	5 Beds
Full Baths	5.5 Baths
Half Baths	1 Half Bath
Units	2 Units
Stories	2 Stories
Building Area	3,712 sqft Living Area
Gross Area	4,639 sqft

Exterior

Year Built	Built 2016
Effective Year Built	Effective 2016
Exterior Material	Concrete Block/Stucco
Construction Type	Concrete Block
Roof Type	Rigid Frame Bar Joist
Roof Material	Other
Lot Area	7,500 sqft (0.172 acres)
Lot Dimensions	100 ft deep x 75 ft wide
Patio Area	360 sqft

Location & Zoning

Street Address	631 WARREN LN
City	KEY BISCAYNE
State	FL
Zip	33149-2020
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	0100
Legal Description	BISCAYNE KEY ESTS PB 50-61 LOT 13BLK 6 LOT SIZE 75.000 X 100 OR 12479-686 0485 1
Legal Range	42E
Legal Township	55S
Legal Section	05
Legal Subdivision	BISCAYNE KEY ESTS
Legal Block	6
Legal Lot Number	13
Jurisdiction	DADE FL
Township / Civil Division	KEY BISCAYNE
Census Block Group	3
Census Block	3018
Census Tract	4602

Owner

631 Warren Ln is owned and occupied by two individuals who bought it in June 2018.

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

Owner of Record	2 Individual Names on File
Mailing Address	631 WARREN LN, KEY BISCAYNE, FL 33149-2020
Occupancy	Owner Occupied
Owner Type	Individual

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

Deeds, Mortgages & Sale History

Date	Document
Feb 2, 2023	Deed of Trust, Mortgage · Line of Credit UNITED WHOLESALE MORTGAGE
Jan 26, 2022	Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE
Jun 15, 2018	Warranty Deed, Transfer FIRSTBANK FLORIDA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 15, 2018 · Amount on File
Deed Sale	Jun 15, 2018 · Amount on File
Prior Sale	Jul 13, 2012 · Amount on File
Deed Document Number	2018354507
Deed Book / Page	31016 / 1353
Prior Transfer Date	Apr 23, 2009
Prior Transfer Doc	0000316396
Record Updated	Oct 29, 2026

February 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DADE FL
Property Address	631 WARREN LN, KEY BISCAYNE, FL 33149-2020
Transaction Type	Mortgage
Record Updated	Feb 22, 2023

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	631 WARREN LN, KEY BISCAYNE, FL 33149-2020

Mortgage

Document Number	0000070483
Date	Feb 2, 2023
Book Page	33565/2836
Instrument	2023R0070483

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company
Address	PONTIAC, MI 48341

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	360 Months
Due	Feb 1, 2053

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

January 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DADE FL
Property Address	631 WARREN LN, KEY BISCAYNE, FL 33149-2020
Transaction Type	Mortgage
Record Updated	Feb 21, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	631 WARREN LN, KEY BISCAYNE, FL 33149-2020

Mortgage

Document Number	0000076082
Date	Jan 26, 2022
Book Page	32983/748
Instrument	2022R0076082

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company
Address	PONTIAC, MI 48341

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Feb 1, 2052

June 2018: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	DADE FL
Recording Date	Jun 15, 2018
Property Address	631 WARREN LN, KEY BISCAYNE, FL 33149-2020
Document Number	0000354507
Book / Page	031016 / 001353
Instrument Date	Jun 8, 2018
Instrument	354507
Transaction Type	Transfer
Record Updated	Jul 13, 2018
Title Company	ATTORNEY ONLY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$18,300.00
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Husband and Wife
Address	631 WARREN LN KEY BISCAYNE FL 331492020, KEY BISCAYNE, FL 33149-2020

Mortgage

Document Number	354508
Date	Jun 15, 2018
Book Page	031016/001355
Instrument	354508

Lender

Name	FIRSTBANK FLORIDA
Type	Bank
Address	701 NW 62ND AVE # 800, MIAMI, FL 33126-4684

Agreement

Amount	Amount on Record
Term	360 Months
Due	Jun 14, 2048

Interest

Rate Type	Adjustable Rate
Rate	4.87%

Tax Assessment & Valuation

The 2025 property tax bill for 631 Warren Ln was $42,553 with a homeowner's exemption.

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	$42,553.00 Homeowner's exemption	$2,684,619	$3,190,537 Land $1,950,000 Building $1,240,537
2023	$41,052.00 (+3.72%) Homeowner's exemption	$2,532,971 (+3%)	$2,848,496 (+15.83%) Land $1,725,000 Building $1,123,496
2022	$39,578.00 Homeowner's exemption	$2,459,196 Land $1,323,750 Building $1,135,446	$2,459,196 Land $1,323,750 Building $1,135,446

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

Flood

FEMA maps place 631 Warren Ln in Zone AE, a high-risk flood area; flood insurance is required for federally backed loans.

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 File median of 489 individual policies
Community Rating System	Class 8 (10% premium discount)
Nearby Flood Policies	548 units insured incl. 59 condo units
Nearby Flood Claims	790 (1979–2021)
Most Recent Claim	Oct 2021 · rainfall accumulation
Claims by Event	Hurricane Irma, Sep 2017 · 69 claims Hurricane Katrina, Aug 2005 · 44 claims Hurricane Andrew, Aug 1992 · 565 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

The area around 631 Warren Ln has no burnable land within ember reach, so its wildfire risk is not rated.

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 533 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL · Fixed Wireless in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
T-Mobile Fixed Wireless	100 / 20

May also be available: Verizon.

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