27 Throckmorton Ln, Mill Valley, CA 94941 Property Records

Marin County property record for 27 Throckmorton Ln, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	2 bd · 2.5 ba · 3,402 sqft · built 1969
Lot Size	0.468 acres (20,386 sqft)
Owner	2 Trust Names on File
Last Sale	$4,650,000 (Jun 2025)
Tax Bill	$39,642 (2025)
Deeds & Mortgages	Nov 2021 Mortgage Jul 2017 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`027-172-26`

Property Details

APN / Parcel Number

Primary APN	`027-172-26`

Interior

Bedrooms	2 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Building Area	3,402 sqft Living Area
Basement Area	240 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1969
Effective Year Built	Effective 1987
Architectural Style	Contemporary
Lot Area	20,386 sqft (0.468 acres)
Garage Area	440 sqft
Parking Spaces	2 Parking Spaces
Deck Area	871 sqft
Patio Area	871 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	27 THROCKMORTON LN
City	MILL VALLEY
State	CA
Zip	94941-1736
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Subdivision	TAMALPAIS LAND & WATER CO MAP
Legal Lot Number	282
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	4
Census Block	4002
Census Tract	127000

Owner

27 Throckmorton Ln is held in a trust since June 2025.

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

Owner of Record	2 Trust Names on File
Mailing Address	12655 BEATRICE ST, LOS ANGELES, CA 90066-7003
Owner Type	Company
Vesting	Trust, Irrevocable 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
Nov 22, 2021	Affidavit of Death of Joint Tenant, Transfer · Conventional Mortgage ROCKET MORTGAGE LLC
Jul 6, 2017	Deed of Trust, Mortgage · ARM FIRST REPUBLIC BANK
Nov 2, 2018	Deed of Trust, Mortgage · Line of Credit QUICKEN LNS

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 2, 2025 · Amount on File
Deed Sale	Jun 2, 2025 · Amount on File
Deed Document Number	202514859
Prior Transfer Date	Aug 23, 2021
Prior Transfer Doc	0000069493
Record Updated	Sep 20, 2026

November 2021: Affidavit of Death of Joint Tenant, Transfer

Document Type	Affidavit of Death of Joint Tenant
Jurisdiction	MARIN CA
Recording Date	Nov 22, 2021
Property Address	27 THROCKMORTON LN, MILL VALLEY, CA 94941-1736
Document Number	0000069493
Map Reference	VOL 7 PG 96
Instrument Date	Aug 23, 2021
Instrument	2021-0069493
Transaction Type	Transfer
Record Updated	Jun 7, 2023
Title Company	AMROCK LLC

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	27 THROCKMORTON LN, MILL VALLEY, CA 94941-1736

Mortgage

Document Number	0000069494
Date	Nov 22, 2021
Instrument	2021-0069494

Lender

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

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	358 Months
Due	Sep 1, 2051

Interest

Rate Type	Adjustable Rate
Rate	2.85%
Type Change Date	Sep 1, 2031
Change Frequency	6 Months
Min Rate At Change	3%
Max Rate At Change	7.85%
Index	Other
Margin	3
Max Rate	7.85%

July 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	27 THROCKMORTON LN, MILL VALLEY, CA 94941-1736
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	FIRST AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000026864
Date	Jul 6, 2017
Instrument	2017-0026864

Lender

Name	FIRST REPUBLIC BANK
Type	Bank
Address	SAN FRANCISCO, CA 94111

Agreement

Type	ARM
Amount	Amount on Record
Term	360 Months
Due	Jul 1, 2047

Interest

Rate Type	Adjustable Rate
Rate	2.5%
Type Change Date	Jul 1, 2024
Change Frequency	Annually
Min Rate At Change	2.5%
Max Rate At Change	9.95%
Index	1-Month LIBOR

November 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	27 THROCKMORTON LN, MILL VALLEY, CA 94941-1736
Document Number	0000038669
Instrument Date	Nov 2, 2018
Transaction Type	Mortgage
Record Updated	Nov 21, 2018

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	27 THROCKMORTON LN MILL VALLEY CA 949411736, MILL VALLEY, CA 94941-1736

Mortgage

Document Number	0000038669
Date	Nov 8, 2018
Instrument	38669

Lender

Name	QUICKEN LNS
Type	Funding / Finance Company
Address	DETROIT, MI 48226-1906

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	360 Months
Due	Nov 7, 2048

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

The 2025 property tax bill for 27 Throckmorton Ln was $39,642.

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		$4,743,000 (+75.67%) Land $2,856,000 Building $1,887,000
2025	$39,642.00	$2,700,000 Land $1,750,000 Building $950,000
2023	$14,804.00 (-2.73%) Homeowner's exemption	$868,986 Land $81,366 Building $787,620
2022	$15,219.00

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

FEMA maps place 27 Throckmorton Ln 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 27 Throckmorton Ln is moderate, ranking above 40% of the US, with a 0.07% annual chance of wildfire.

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

Wildfire Risk	Moderate above 40% of the US · lower than 76% of California
Wildfire Likelihood	0.07% 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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