480 Throckmorton Ave, Mill Valley, CA 94941 Property Records

Marin County property record for 480 Throckmorton Ave, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	6 bd · 5 ba · 4,864 sqft · built 1898
Lot Size	1.15 acres (50,500 sqft)
Owner	2 Trust Names on File
Last Sale	$15,900,000 (Aug 2022)
Tax Bill	$190,348 (2025)
Deeds & Mortgages	Aug 2022 Sale Aug 2021 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`027-222-01`

Property Details

APN / Parcel Number

Primary APN	`027-222-01`

Interior

Bedrooms	6 Beds
Full Baths	5 Baths
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	4,864 sqft Living Area
Basement Area	180 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1898
Effective Year Built	Effective 2003
Architectural Style	Contemporary
Exterior Material	Wood Shingle
Roof Material	Composition Shingle
Lot Area	50,500 sqft
Garage Area	360 sqft
Parking Spaces	1 Parking Space
Pool Area	384 sqft
Deck Area	352 sqft
Patio Area	352 sqft

Utilities, Heating & Cooling

Heating System	Central
Heating Fuel	Gas
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	480 THROCKMORTON AVE
City	MILL VALLEY
State	CA
Zip	94941-2626
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	RS
Legal Description	MAP 1 PG 2 LOT 143
Legal Subdivision	TAMALPAIS LAND & WATER CO MAP
Legal Lot Number	143
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	4
Census Block	4002
Census Tract	127000

Owner

480 Throckmorton Ave is held in a trust since August 2022.

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

Owner of Record	2 Trust Names on File
Mailing Address	2 CANTITOE LN, ENGLEWOOD, CO 80113-6111
Owner Type	Company
Vesting	Trust, Living Trust

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 4, 2022	Grant Deed, Transfer CAL LAND TITLE COMPANY
Aug 30, 2021	Deed of Trust, Mortgage · Conventional Mortgage JPMORGAN CHASE BANK NA
Dec 17, 2019	Deed of Trust, Mortgage · Conventional Mortgage US BANK NA
Sep 15, 2017	Grant Deed, Transfer OLD REPUBLIC TITLE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 4, 2022 · Amount on File
Deed Sale	Aug 4, 2022 · Amount on File
Prior Sale	Sep 15, 2017 · Amount on File
Deed Document Number	202228586
Prior Transfer Date	Aug 18, 2016
Prior Transfer Doc	0000040582
Record Updated	Oct 29, 2026

August 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Aug 4, 2022
Property Address	480 THROCKMORTON AVE, MILL VALLEY, CA 94941-2626
Document Number	0000028586
Instrument Date	Jul 21, 2022
Instrument	2022-0028586
Transaction Type	Transfer
Record Updated	Jun 7, 2023
Title Company	CAL LAND TITLE COMPANY

Transaction

Amount	Amount on Record
Tax	$17,490.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Living Trust
Address	2 CANTITOE LN, CHERRY HILLS, CO 80113-6111

August 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	480 THROCKMORTON AVE, MILL VALLEY, CA 94941-2626
Transaction Type	Mortgage
Record Updated	Sep 15, 2021
Title Company	REPUBLIC NATIONAL TITLE INSURANCE COMPANY, OLD REPUBLIC NATL TTL INS CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	480 THROCKMORTON AVE, MILL VALLEY, CA 94941-2626

Mortgage

Document Number	0000054336
Date	Aug 30, 2021
Instrument	2021-0054336

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank
Address	COLUMBUS, OH 43240

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Sep 1, 2051

December 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	480 THROCKMORTON AVE, MILL VALLEY, CA 94941-2626
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	CHICAGO TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000047681
Date	Dec 17, 2019
Instrument	2019-0047681

Lender

Name	US BANK NA
Type	Bank
Address	OWENSBORO, KY 42301

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jan 1, 2050

September 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Sep 15, 2017
Property Address	480 THROCKMORTON AVE, MILL VALLEY, CA 94941-2626
Document Number	0000036865
Instrument Date	Aug 17, 2017
Instrument	36865
Transaction Type	Transfer
Record Updated	Sep 28, 2017
Title Company	OLD REPUBLIC TITLE

Transaction

Amount	Amount on Record
Tax	$6,875.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	629 FRONTERA DR PACIFIC PALISADES CA 902723710, PACIFIC PALISADES, CA 90272-3710

Tax Assessment & Valuation

The 2025 property tax bill for 480 Throckmorton Ave was $190,348.

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

Property Jurisdictions

Type	Name
State	California
County	Marin County
Municipality	Mill Valley City
Elementary School District	Mill Valley 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		$16,873,080 (+2%) Land $10,081,400 Building $6,791,680
2025	$190,348.00	$16,542,360 Land $9,883,800 Building $6,658,560
2023	$180,477.00 (+122.61%)	$15,900,000 Land $9,500,000 Building $6,400,000
2022	$81,074.00

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

Flood

FEMA maps place 480 Throckmorton Ave in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.

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 AO, within 500 ft
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 (2005–2007)
Claims Outside the SFHA	1 of 2
Most Recent Claim	May 2007 · other causes

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 480 Throckmorton Ave is low, with a 0.04% annual chance of wildfire.

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

Wildfire Risk	Low lower than 67% of the US · lower than 81% of California
Wildfire Likelihood	0.04% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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

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

May also be available: Unwired, Verizon.

Cell Coverage

5G and 4G LTE (outdoors only)

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