445 Throckmorton Ave, Mill Valley, CA 94941 Property Records

Marin County property record for 445 Throckmorton Ave, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	7 bd · 4.5 ba · 4,141 sqft · built 1928
Lot Size	0.305 acres (13,300 sqft)
Owner	2 Company Names on Record
Last Sale	$4,500,000 (Sep 2015)
Tax Bill	$67,572 (2025)
Deeds & Mortgages	Dec 2025 Mortgage May 2019 Transfer
Flood Zone	Zone X (minimal risk)
APN	`027-242-05`

Property Details

APN / Parcel Number

Primary APN	`027-242-05`

Interior

Bedrooms	7 Beds
Full Baths	4.5 Baths
Half Baths	1 Half Bath
Building Area	4,141 sqft Living Area
Basement Area	212 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1928
Effective Year Built	Effective 2005
Architectural Style	Contemporary
Lot Area	13,300 sqft (0.305 acres)
Garage Area	500 sqft
Parking Spaces	2 Parking Spaces
Deck Area	2,793 sqft
Patio Area	3,256 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	445 THROCKMORTON AVE
City	MILL VALLEY
State	CA
Zip	94941-2670
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Subdivision	TAMALPAIS LAND & WATER CO MAP
Legal Lot Number	165
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	4
Census Block	4012
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

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	445 THROCKMORTON AVE, MILL VALLEY, CA 94941-2670
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Borrower in Default

Deeds, Mortgages & Sale History

Date	Document
Dec 31, 2025	Deed of Trust, Mortgage · Conventional Mortgage ROCKET MORTGAGE LLC
May 30, 2019	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Sep 14, 2015 · Amount on Record
Deed Sale	Sep 14, 2015 · Amount on Record
Prior Sale	Apr 10, 2008 · Amount on Record
Deed Document Number	201544232
Last Transfer Date	Apr 16, 2019
Transfer Doc	0000018408
Record Updated	Oct 29, 2026

December 2025: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	445 THROCKMORTON AVE, MILL VALLEY, CA 94941-2670
Transaction Type	Mortgage
Record Updated	Jan 15, 2026

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	445 THROCKMORTON AVE, MILL VALLEY, CA 94941-2670

Mortgage

Document Number	0000033413
Date	Dec 31, 2025
Instrument	2025-0033413

Lender

Name	ROCKET MORTGAGE LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jan 1, 2056

Interest

Rate Type	Adjustable Rate
Rate	5.87%
Type Change Date	Jan 1, 2036
Change Frequency	6 Months
Min Rate At Change	3%
Max Rate At Change	10.8%
Index	SOFR Average 30-Day
Margin	3
Max Rate	10.8%

May 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	MARIN CA
Recording Date	May 30, 2019
Property Address	445 THROCKMORTON AVE, MILL VALLEY, CA 94941-2670
Document Number	0000018408
Instrument Date	Apr 16, 2019
Instrument	18408
Transaction Type	Transfer
Record Updated	Jun 11, 2019
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	445 THROCKMORTON AVE MILL VALLEY CA 949412670, MILL VALLEY, CA 94941-2670

Tax Assessment & Valuation

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		$5,701,200 (+2%) Land $3,018,600 Building $2,682,600
2025	$67,572.00 (+4.72%) Homeowner's exemption	$5,589,436 (+4.04%) Land $2,959,425 Building $2,630,011
2023	$64,527.00 (+4.1%) Homeowner's exemption	$5,372,425 Land $2,844,525 Building $2,527,900
2022	$61,984.00

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 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

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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