4 Warrens Way, Tiburon (Belvedere Tiburon), CA 94920 Property Records

Marin County property record for 4 Warrens Way, Tiburon, CA 94920

Property Summary

Property Type	Single Family Home
Details	5 bd · 5 ba · 3,445 sqft · built 1960
Lot Size	0.388 acres (16,900 sqft)
Owner	2 Individual Names on File
Last Sale	$5,775,000 (Apr 2026)
Tax Bill	$34,983 (2025)
Deeds & Mortgages	Apr 2026 Sale Jun 2022 Mortgage + 6 more
Flood Zone	Zone X (minimal risk)
APN	`034-302-09`

Property Details

APN / Parcel Number

Primary APN	`034-302-09`

Interior

Bedrooms	5 Beds
Full Baths	5 Baths
Total Rooms	6 Rooms
Stories	1 Story
Building Area	3,445 sqft Living Area
Basement Area	176 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1960
Effective Year Built	Effective 2000
Architectural Style	Contemporary
Lot Area	16,900 sqft (0.388 acres)
Garage Area	566 sqft
Parking Spaces	2 Parking Spaces
Deck Area	1,660 sqft
Patio Area	1,660 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	4 WARRENS WAY
City	BELVEDERE TIBURON
State	CA
Zip	94920-2065
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Subdivision	REEDLANDS #3
Legal Lot Number	82
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	5
Census Block	5009
Census Tract	124100

Owner

4 Warrens Way is owned and occupied by two individuals who bought it in April 2026.

Source: Marin County records, as of July 13, 2026

Owner of Record	2 Individual Names on File
Mailing Address	4 WARRENS WAY, BELVEDERE TIBURON, CA 94920-2065
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

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
Apr 9, 2026	Grant Deed, Transfer WFG NATIONAL TITLE INSURANCE, WFG NATIONAL TITLE INSURANCE C
Jun 21, 2022	Deed of Trust, Mortgage · Conventional Mortgage ROCKET MORTGAGE LLC
Sep 23, 2021	Intrafamily Transfer, Transfer · Conventional Mortgage ROCKET MORTGAGE LLC
Mar 24, 2021	Intrafamily Transfer, Transfer
Mar 24, 2021	Intrafamily Transfer, Transfer
Mar 24, 2021	Intrafamily Transfer, Transfer
Jan 21, 2021	Deed of Trust, Mortgage · Line of Credit FIRST REPUBLIC BANK
Aug 2, 2019	Grant Deed, Transfer · ARM FIRST REPUBLIC BANK

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Apr 9, 2026 · Amount on File
Deed Sale	Apr 9, 2026 · Amount on File
Prior Sale	Aug 2, 2019 · Amount on File
Deed Document Number	202610406
Prior Transfer Date	Aug 30, 2021
Prior Transfer Doc	0000059035
Record Updated	Oct 29, 2026

April 2026: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Apr 9, 2026
Property Address	4 WARRENS WAY, TIBURON, CA 94920-2065
Document Number	0000010406
Instrument Date	Mar 31, 2026
Instrument	202610406
Transaction Type	Transfer
Record Updated	Apr 22, 2026
Title Company	WFG NATIONAL TITLE INSURANCE, WFG NATIONAL TITLE INSURANCE C

Transaction

Amount	Amount on Record
Tax	$641,602.50
Amount Accuracy	Full Amount Stated
Additional	Arm's Length Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	4 WARRENS WAY, TIBURON, CA 94920-2065

June 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	4 WARRENS WAY, TIBURON, CA 94920-2065
Transaction Type	Mortgage
Record Updated	Jul 7, 2022
Title Company	AMROCK LLC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4 WARRENS WAY, TIBURON, CA 94920-2065

Mortgage

Document Number	0000023860
Date	Jun 21, 2022
Instrument	2022-0023860

Lender

Name	ROCKET MORTGAGE LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	351 Months
Due	Sep 1, 2051

Interest

Rate Type	Adjustable Rate
Rate	1.85%
Type Change Date	Sep 1, 2026
Change Frequency	6 Months
Min Rate At Change	3%
Max Rate At Change	3.85%
Index	Other
Margin	3
Max Rate	6.85%

September 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	MARIN CA
Recording Date	Sep 23, 2021
Property Address	4 WARRENS WAY, TIBURON, CA 94920-2065
Document Number	0000059035
Map Reference	VOL 10 PG 4
Instrument Date	Aug 30, 2021
Instrument	2021-0059035
Transaction Type	Transfer
Record Updated	Jun 7, 2023
Title Company	AMROCK LLC

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	4 WARRENS WAY, BELVEDERE TIBURON, CA 94920-2065

Mortgage

Document Number	0000059036
Date	Sep 23, 2021
Instrument	2021-0059036

Lender

Name	ROCKET MORTGAGE LLC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Sep 1, 2051

Interest

Rate Type	Adjustable Rate
Rate	1.85%
Type Change Date	Sep 1, 2026
Change Frequency	6 Months
Min Rate At Change	3%
Max Rate At Change	3.85%
Index	Other
Margin	3
Max Rate	6.85%

March 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	MARIN CA
Recording Date	Mar 24, 2021
Property Address	4 WARRENS WAY, TIBURON, CA 94920-2065
Document Number	0000019954
Map Reference	VOL 10 PG 4
Instrument Date	Mar 3, 2021
Instrument	2021-0019954
Transaction Type	Transfer
Record Updated	Jun 7, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	4 WARRENS WAY, TIBURON, CA 94920-2065

March 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	MARIN CA
Recording Date	Mar 24, 2021
Property Address	4 WARRENS WAY, TIBURON, CA 94920-2065
Document Number	0000019953
Map Reference	VOL 10 PG 4
Instrument Date	Mar 3, 2021
Instrument	2021-0019953
Transaction Type	Transfer
Record Updated	Jun 7, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	4 WARRENS WAY, TIBURON, CA 94920-2065

March 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	MARIN CA
Recording Date	Mar 24, 2021
Property Address	4 WARRENS WAY, TIBURON, CA 94920-2065
Document Number	0000019952
Map Reference	VOL 10 PG 4
Instrument Date	Mar 3, 2021
Instrument	2021-0019952
Transaction Type	Transfer
Record Updated	Aug 13, 2021

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4 WARRENS WAY, TIBURON, CA 94920-2065

January 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	4 WARRENS WAY, TIBURON, CA 94920-2065
Transaction Type	Mortgage
Record Updated	Feb 11, 2021
Title Company	FIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4 WARRENS WAY, TIBURON, CA 94920-2065

Mortgage

Document Number	0000004036
Date	Jan 21, 2021
Instrument	2021-0004036

Lender

Name	FIRST REPUBLIC BANK
Type	Bank
Address	SAN FRANCISCO, CA 94111

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	300 Months
Due	Jan 26, 2046

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

August 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Aug 2, 2019
Property Address	4 WARRENS WAY, TIBURON, CA 94920-2065
Document Number	0000027398
Map Reference	VOL 10 PG 4
Instrument Date	Jul 24, 2019
Instrument	2019-0027398
Transaction Type	Transfer
Record Updated	Aug 13, 2021
Title Company	FIDELITY NATIONAL TITLE CO

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	4 WARRENS WAY, BELVEDERE TIBURON, CA 94920-2065

Mortgage

Document Number	0000027399
Date	Aug 2, 2019
Instrument	2019-0027399

Lender

Name	FIRST REPUBLIC BANK
Type	Credit Union

Agreement

Type	ARM
Amount	Amount on Record
Term	361 Months
Due	Sep 1, 2049

Interest

Rate Type	Adjustable Rate
Rate	3.1%
Adjustable	Adjustable Rate Rider
Type Change Date	Sep 1, 2026
Change Frequency	Monthly
Min Rate At Change	2.95%
Max Rate At Change	10.9%
Index	1-Year CMT
Max Rate	10.9%

Tax Assessment & Valuation

The 2025 property tax bill for 4 Warrens Way was $34,983.

Source: Marin County assessment roll, as of July 13, 2026

Property Jurisdictions

Type	Name
State	California
County	Marin County
Municipality	Tiburon Town
Elementary School District	Reed Union Elementary School District (KG - 08)
Secondary School District	Tamalpais Union High School District (09 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$2,985,943 (+2%) Land $1,729,531 Building $1,256,412
2025	$34,983.00 Homeowner's exemption	$2,927,399 Land $1,695,621 Building $1,231,778
2023	$32,707.00 (+1.25%) Homeowner's exemption	$2,759,817 Land $1,629,786 Building $1,130,031
2022	$32,302.00

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

FEMA maps place 4 Warrens Way in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 2021.

Source: FEMA National Flood Hazard Layer, effective October 18, 2023 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on File median of 10 policies
Nearby Flood Policies	10 in force
Nearby Flood Claims	2 (2021)
Claims Outside the SFHA	2 of 2
Most Recent Claim	Oct 2021 · rainfall accumulation

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

Wildfire risk around 4 Warrens Way is low, with less than a 0.01% annual chance of 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 99.2% of California
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	MARIN MUNICIPAL WATER DISTRICT serves 188,116 people · EPA ID CA2110002
Water Source	Surface water
Last State Inspection	Aug 2023
Lead	Under 1 ppb (2019–2021) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 569 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless · DSL in parts of the area	100 / 20

Cell Coverage

5G (outdoors only) and 4G LTE

Nearby Properties on Warrens Way

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