36 Seafirth Rd, Tiburon (Belvedere Tiburon), CA 94920 Property Records

Marin County property record for 36 Seafirth Rd, Tiburon, CA 94920

Property Summary

Property Type	Single Family Home
Details	3 bd · 3 ba · 2,861 sqft · built 1956
Lot Size	0.597 acres (26,000 sqft)
Owner	2 Company Names on Record
Last Sale	$658,500 (Jun 1996)
Tax Bill	$16,515 (2025)
Deeds & Mortgages	Sep 2021 Mortgage Apr 2019 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`039-092-03`

Property Details

APN / Parcel Number

Primary APN	`039-092-03`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	2,861 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1956
Effective Year Built	Effective 1966
Architectural Style	Contemporary
Exterior Material	Wood
Roof Material	Composition Shingle
Lot Area	26,000 sqft (0.597 acres)
Garage Area	480 sqft
Parking Spaces	2 Parking Spaces
Pool Type	Spa / Hot Tub (No Pool)
Deck Area	419 sqft
Patio Area	419 sqft

Utilities, Heating & Cooling

Heating System	Central
Heating Fuel	Gas
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	36 SEAFIRTH RD
City	BELVEDERE TIBURON
State	CA
Zip	94920-1140
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	RO2
Legal Description	LOT 6
Legal Subdivision	SEAFIRTH SUB
Legal Lot Number	6
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	3
Census Block	3004
Census Tract	124200

Owner

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

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

Owner of Record	2 Company Names on Record
Mailing Address	36 SEAFIRTH RD, BELVEDERE TIBURON, CA 94920-1140
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Borrower in Default

Deeds, Mortgages & Sale History

Date	Document
Sep 22, 2021	Deed of Trust, Mortgage · Conventional Mortgage MUFG UNION BANK NA
Apr 3, 2019	Deed of Trust, Mortgage · ARM MUFG UNION BANK NA
May 26, 2020	Deed of Trust, Mortgage · Conventional Mortgage MUFG UNION BANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 25, 1996 · Amount on Record
Deed Sale	Jun 25, 1996 · Amount on Record
Prior Sale	Aug 23, 1994
Deed Document Number	199634455
Last Transfer Date	Apr 25, 2016
Transfer Doc	0000018398
Record Updated	Oct 29, 2026

September 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	36 SEAFIRTH RD, TIBURON, CA 94920-1140
Transaction Type	Mortgage
Record Updated	Oct 5, 2021
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	36 SEAFIRTH RD, TIBURON, CA 94920-1140

Mortgage

Document Number	0000058818
Date	Sep 22, 2021
Instrument	2021-0058818

Lender

Name	MUFG UNION BANK NA
Type	Bank
Address	SAN DIEGO, CA 92121

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Oct 1, 2051

Interest

Rate Type	Adjustable Rate
Rate	2.75%
Type Change Date	Oct 1, 2031
Change Frequency	6 Months
Min Rate At Change	2.75%
Max Rate At Change	4.75%
Index	Other
Max Rate	8.75%

April 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	36 SEAFIRTH RD, TIBURON, CA 94920-1140
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	STEWART TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000010844
Date	Apr 3, 2019
Instrument	2019-0010844

Lender

Name	MUFG UNION BANK NA
Type	Bank
Address	SAN DIEGO, CA 92121

Agreement

Type	ARM
Amount	Amount Recorded
Term	360 Months
Due	Apr 1, 2049

Interest

Rate Type	Adjustable Rate
Rate	4.12%
Type Change Date	Apr 1, 2029
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	6.12%
Index	1-Year LIBOR
Max Rate	10.1%

May 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	36 SEAFIRTH RD, TIBURON, CA 94920-1140
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	FIRST AMER TTL CO OF NAPA

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000020663
Date	May 26, 2020
Instrument	2020-0020663

Lender

Name	MUFG UNION BANK NA
Type	Bank
Address	SAN DIEGO, CA 92121

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jun 1, 2050

Interest

Rate Type	Adjustable Rate
Rate	3.75%
Type Change Date	Jun 1, 2030
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	5.75%
Index	1-Year LIBOR
Max Rate	9.75%

Tax Assessment & Valuation

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		$1,208,709 (+2%) Land $643,853 Building $564,856
2025	$16,515.00 (+8.1%) Homeowner's exemption	$1,185,010 (+4.04%) Land $631,229 Building $553,781
2023	$15,277.00 (+3.44%) Homeowner's exemption	$1,138,997 Land $606,719 Building $532,278
2022	$14,769.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

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 Record median of 32 individual policies
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	37 units insured incl. 5 condo units
Nearby Flood Claims	14 (1982–2026)
Claims Outside the SFHA	7 of 14
Most Recent Claim	Jan 2026 · tidal / storm surge
Claims by Event	Severe Storms, Flood, Mudslides & High Tide, Jan 1982 · 4 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 93% of the US · lower than 96% of California
Wildfire Likelihood	0.03% annual chance
Exposure	Direct burnable vegetation

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 24 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

May also be available: Etheric Networks.

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