418 Throckmorton Ave, Mill Valley, CA 94941 Property Records

Marin County property record for 418 Throckmorton Ave, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	4 bd · 4.5 ba · 3,031 sqft · built 1893
Lot Size	0.214 acres (9,300 sqft)
Owner	2 Company Names on File
Last Sale	$3,300,000 (Jul 2017)
Tax Bill	$50,660 (2025)
Deeds & Mortgages	Jul 2017 Sale
Flood Zone	Zone X (minimal risk)
APN	`027-222-12`

Property Details

APN / Parcel Number

Primary APN	`027-222-12`

Interior

Bedrooms	4 Beds
Full Baths	4.5 Baths
Half Baths	1 Half Bath
Building Area	3,031 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1893
Effective Year Built	Effective 1998
Lot Area	9,300 sqft (0.214 acres)
Garage Area	440 sqft
Parking Spaces	2 Parking Spaces
Deck Area	1,063 sqft
Patio Area	1,063 sqft

Utilities, Heating & Cooling

Heating System	Radiant

Location & Zoning

Street Address	418 THROCKMORTON AVE
City	MILL VALLEY
State	CA
Zip	94941-2626
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Subdivision	TAMALPAIS LAND & WATER CO
Legal Lot Number	146
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	4
Census Block	4002
Census Tract	127000

Historic Designation

Source: NPS National Register of Historic Places, as of August 1, 2026

Listed Area	Within Dipsea Trail, The listed 2010 · 1 contributing resources · NRIS 10000356

Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.

Owner

418 Throckmorton Ave is owned by a company that bought it in July 2017.

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

Owner of Record	2 Company Names on File
Mailing Address	PO BOX 21448, SEATTLE, WA 98111-3448
Owner Type	Company
Vesting	Borrower in Default

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

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 25, 2017 · Amount on File
Deed Sale	Jul 25, 2017 · Amount on File
Prior Sale	Apr 5, 2007 · Amount on File
Deed Document Number	201729528
Prior Transfer Date	Mar 12, 2007
Prior Transfer Doc	0000015193
Record Updated	Oct 29, 2026

July 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Jul 25, 2017
Property Address	418 THROCKMORTON AVE, MILL VALLEY, CA 94941-2626
Document Number	0000029528
Instrument Date	Jul 21, 2017
Instrument	29528
Transaction Type	Transfer
Record Updated	Jul 14, 2020
Title Company	FIRST AMERICAN TITLE

Transaction

Amount	Amount on Record
Tax	$3,630.00
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	9933 LAKE WASHINGTON BLVD NE BELLEVUE WA 980046068, BELLEVUE, WA 98004-6068

Tax Assessment & Valuation

The 2025 property tax bill for 418 Throckmorton Ave was $50,660.

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		$4,294,140 (+7.1%) Land $1,624,784 Building $2,669,356
2025	$50,660.00	$4,009,373 Land $1,592,934 Building $2,416,439
2023	$45,312.00 (+2.43%)	$3,608,979 Land $1,531,082 Building $2,077,897
2022	$44,237.00

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

Flood

FEMA maps place 418 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 AE, 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 418 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)

Nearby Properties on Throckmorton Ave

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures