1857 Mar West St, Tiburon (Belvedere Tiburon), CA 94920 Property Records

Marin County property record for 1857 Mar West St, Tiburon, CA 94920

Property Summary

Property Type	Single Family Home
Details	3 bd · 3.5 ba · 2,390 sqft · built 1982
Lot Size	0.109 acres (4,725 sqft)
Owner	2 Company Names on Record
Last Sale	$2,100,000 (Sep 2019)
Tax Bill	$28,587 (2025)
Deeds & Mortgages	May 2018 Line of Credit Sep 2019 Sale
Flood Zone	Zone X (minimal risk)
APN	`059-360-02`

Property Details

APN / Parcel Number

Primary APN	`059-360-02`

Interior

Bedrooms	3 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Building Area	2,390 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1982
Effective Year Built	Effective 1984
Architectural Style	Colonial
Lot Area	4,725 sqft (0.109 acres)
Garage Area	420 sqft
Parking Spaces	2 Parking Spaces
Deck Area	707 sqft
Patio Area	707 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	1857 MAR WEST ST
City	BELVEDERE TIBURON
State	CA
Zip	94920-1901
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	L1 /B19P91 PM WALLACE CONDOMI
Legal Subdivision	PARCEL MAP WALLACE CONDOMINIUM
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	3
Census Block	3019
Census Tract	124200

Owner

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

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

Owner of Record	2 Company Names on Record
Mailing Address	1857 MAR WEST ST, BELVEDERE TIBURON, CA 94920-1901
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Living Trust

Deeds, Mortgages & Sale History

Date	Document
May 25, 2018	Deed of Trust, Mortgage · Line of Credit CITIBANK NA
Sep 25, 2019	Grant Deed, Transfer FIRST AMERICAN TITLE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Sep 25, 2019 · Amount on Record
Deed Sale	Sep 25, 2019 · Amount on Record
Prior Sale	Aug 7, 2003 · Amount on Record
Deed Document Number	201935453
Prior Transfer Date	Nov 26, 2003
Prior Transfer Doc	0000150757
Record Updated	Oct 29, 2026

May 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	1857 MAR WEST ST, TIBURON, CA 94920-1901
Transaction Type	Mortgage
Record Updated	Aug 23, 2022
Title Company	SERVICELINK

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000018702
Date	May 25, 2018
Instrument	2018-0018702

Lender

Name	CITIBANK NA
Type	Bank
Address	SIOUX FALLS, SD 57104

Agreement

Type	Line of Credit
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

September 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Sep 25, 2019
Property Address	1857 MAR WEST ST, TIBURON, CA 94920-1901
Document Number	0000035453
Instrument Date	Sep 19, 2019
Instrument	35453
Transaction Type	Transfer
Record Updated	Oct 4, 2019
Title Company	FIRST AMERICAN TITLE

Transaction

Amount	Amount Recorded
Tax	$2,310.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Living Trust
Address	875 A ISLAND DR #148 ALAMEDA CA 94502, 148, ALAMEDA, CA 94502

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		$2,331,395 (+2%) Land $1,160,120 Building $1,171,275
2025	$28,587.00 (+6.87%) Homeowner's exemption	$2,285,686 (+4.04%) Land $1,137,375 Building $1,148,311
2023	$26,750.00 (+2.47%) Homeowner's exemption	$2,196,944 Land $1,093,216 Building $1,103,728
2022	$26,105.00

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
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
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 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 433 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

May also be available: AT&T.

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