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

Marin County property record for 30 Seafirth Rd, Tiburon, CA 94920

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 2,341 sqft · built 1955
Lot Size	0.386 acres (16,800 sqft)
Owner	2 Individual Names on File
Last Sale	$2,500,000 (Dec 2021)
Tax Bill	$33,985 (2025)
Deeds & Mortgages	Aug 2022 Line of Credit Dec 2021 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`039-092-08`

Property Details

APN / Parcel Number

Primary APN	`039-092-08`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	2,341 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1955
Effective Year Built	Effective 1955
Architectural Style	Contemporary
Exterior Material	Wood Siding
Construction Type	Frame
Roof Material	Wood Shingle
Lot Area	16,800 sqft (0.386 acres)
Garage Area	550 sqft
Parking Spaces	2 Parking Spaces
Pool Area	512 sqft
Deck Area	360 sqft

Utilities, Heating & Cooling

Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	30 SEAFIRTH RD
City	BELVEDERE TIBURON
State	CA
Zip	94920-1124
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	MAP 8 PG 12 LOT 5
Legal Subdivision	SEAFIRTH
Legal Lot Number	5
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	3
Census Block	3004
Census Tract	124200

Owner

30 Seafirth Rd is owned and occupied by two individuals who bought it in December 2021.

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

Owner of Record	2 Individual Names on File
Mailing Address	30 SEAFIRTH RD, BELVEDERE TIBURON, CA 94920-1124
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
Aug 15, 2022	Deed of Trust, Mortgage · Line of Credit SAN MATEO CU
Dec 3, 2021	Grant Deed, Transfer · Conventional Mortgage FIRST REPUBLIC BANK

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Dec 3, 2021 · Amount on File
Deed Sale	Dec 3, 2021 · Amount on File
Deed Document Number	202171455
Prior Transfer Date	Mar 30, 1995
Prior Transfer Doc	0000015979
Record Updated	Oct 29, 2026

August 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	30 SEAFIRTH RD, TIBURON, CA 94920-1124
Transaction Type	Mortgage
Record Updated	Sep 1, 2022
Title Company	CHICAGO TITLE PIRT

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	30 SEAFIRTH RD, BEL TIBURON, CA 94920-1124

Mortgage

Document Number	0000029562
Date	Aug 15, 2022
Instrument	2022-0029562

Lender

Name	SAN MATEO CU
Type	Credit Union
Address	REDWOOD CITY, CA 94063

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	300 Months
Due	Aug 1, 2047

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

December 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Dec 3, 2021
Property Address	30 SEAFIRTH RD, TIBURON, CA 94920-1124
Document Number	0000071455
Map Reference	MB 8 PG 12
Instrument Date	Nov 23, 2021
Instrument	2021-0071455
Transaction Type	Transfer
Record Updated	Aug 23, 2022
Title Company	FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$2,750.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	30 SEAFIRTH RD, TIBURON, CA 94920-1124

Mortgage

Document Number	0000071456
Date	Dec 3, 2021
Instrument	2021-0071456

Lender

Name	FIRST REPUBLIC BANK
Type	Bank

Agreement

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

Tax Assessment & Valuation

The 2025 property tax bill for 30 Seafirth Rd was $33,985 with a homeowner's exemption.

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		$2,833,394 (+2%) Land $1,785,993 Building $1,047,401
2025	$33,985.00 Homeowner's exemption	$2,777,848 Land $1,750,980 Building $1,026,868
2023	$31,679.00 (+5.72%)	$2,650,000 Land $1,683,000 Building $967,000
2022	$29,965.00

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

Flood

FEMA maps place 30 Seafirth Rd in Zone X, an area of minimal flood risk, though there have been 14 flood claims nearby since 1982.

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 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

Wildfire risk around 30 Seafirth Rd is low, with a 0.02% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 95% of the US · lower than 97% of California
Wildfire Likelihood	0.02% 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 133 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

May also be available: Verizon.

Cell Coverage

5G (outdoors only) and 4G LTE

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