307 Sheffield Ave, Mill Valley, CA 94941 Property Records

Marin County property record for 307 Sheffield Ave, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 2,240 sqft · built 1971
Lot Size	0.139 acres (6,048 sqft)
Owner	2 Trust Names on File
Last Sale	$2,730,000 (Mar 2023)
Tax Bill	$38,444 (2025)
Deeds & Mortgages	Mar 2023 Sale & Mortgage Jun 2020 Line of Credit + 2 more
Flood Zone	Zone X (minimal risk)
APN	`050-131-03`

Property Details

APN / Parcel Number

Primary APN	`050-131-03`

Interior

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

Exterior

Year Built	Built 1971
Effective Year Built	Effective 1985
Architectural Style	Contemporary
Lot Area	6,048 sqft (0.139 acres)
Garage Area	240 sqft
Parking Spaces	1 Parking Space
Deck Area	420 sqft
Patio Area	420 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	307 SHEFFIELD AVE
City	MILL VALLEY
State	CA
Zip	94941-3860
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	MAP 4 PG 104 BLK 2 LOT 29,30
Legal Subdivision	MARIN HEIGHTS C
Legal Block	2
Legal Lot Number	29,30
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	1
Census Block	1004
Census Tract	128100

Owner

307 Sheffield Ave is owner-occupied and held in a trust since November 2024.

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

Owner of Record	2 Trust Names on File
Mailing Address	306 DOLAN AVE, MILL VALLEY, CA 94941-3824
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Family 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
Mar 9, 2023	Grant Deed, Transfer · Conventional Mortgage PLAZA HOME MORTGAGE INC
Jun 9, 2020	Deed of Trust, Mortgage · Line of Credit WELLS FARGO BANK NA
Apr 13, 2020	Deed of Trust, Mortgage · Conventional Mortgage WELLS FARGO BANK NA
Aug 16, 2018	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Mar 9, 2023 · Amount on File
Deed Sale	Mar 9, 2023 · Amount on File
Prior Sale	Dec 15, 1999 · Amount on File
Deed Document Number	20234833
Last Transfer Date	Nov 14, 2024
Transfer Doc	0000030808
Record Updated	Sep 20, 2026

March 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Mar 9, 2023
Property Address	307 SHEFFIELD AVE, MILL VALLEY, CA 94941-3860
Document Number	0000004833
Map Reference	VOL 4 PG 104
Instrument Date	Feb 26, 2023
Instrument	2023-0004833
Transaction Type	Transfer
Record Updated	Jun 7, 2023
Title Company	FIDELITY NATIONAL TITLE CO

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$3,003.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Revocable Trust
Address	307 SHEFFIELD AVE, MILL VALLEY, CA 94941-3860

Mortgage

Document Number	0000004834
Date	Mar 9, 2023
Instrument	2023-0004834

Lender

Name	PLAZA HOME MORTGAGE INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Apr 1, 2053

June 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	307 SHEFFIELD AVE, MILL VALLEY, CA 94941-3860
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	ORANGE COAST TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000023118
Date	Jun 9, 2020
Instrument	2020-0023118

Lender

Name	WELLS FARGO BANK NA
Type	Bank
Address	SIOUX FALLS, SD 57104

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	361 Months
Due	Jun 30, 2050

April 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	307 SHEFFIELD AVE, MILL VALLEY, CA 94941-3860
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	OLD REPUBLIC TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000014405
Date	Apr 13, 2020
Instrument	20200014405

Lender

Name	WELLS FARGO BANK NA
Type	Bank
Address	SIOUX FALLS, SD 57104

Agreement

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

August 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	MARIN CA
Recording Date	Aug 16, 2018
Property Address	307 SHEFFIELD AVE, MILL VALLEY, CA 94941-3860
Document Number	0000029063
Instrument Date	Jul 27, 2018
Instrument	29063
Transaction Type	Transfer
Record Updated	Aug 28, 2018
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	Living Trust
Address	307 SHEFFIELD AVE MILL VALLEY CA 949413860, MILL VALLEY, CA 94941-3860

Tax Assessment & Valuation

The 2025 property tax bill for 307 Sheffield Ave was $38,444 with a homeowner's exemption.

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

Property Jurisdictions

Type	Name
State	California
County	Marin County
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		$2,897,076 (+2%) Land $1,644,860 Building $1,252,216
2025	$38,444.00 Homeowner's exemption	$2,840,292 Land $1,612,620 Building $1,227,672
2023	$15,967.00 (+4.51%) Homeowner's exemption	$856,781 Land $481,731 Building $375,050
2022	$15,278.00

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 307 Sheffield Ave in Zone X, an area of minimal flood risk, though there have been 4 flood claims nearby since 1982.

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
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	4 in force
Nearby Flood Claims	4 (1982–1998)
Claims Outside the SFHA	4 of 4
Most Recent Claim	Apr 1998 · Severe Winter Storms And Flooding

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 307 Sheffield Ave is low, with a 0.01% annual chance of wildfire.

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

Wildfire Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.01% annual chance
Exposure	Direct burnable vegetation

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

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL	5,000 / 5,000
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25

May also be available: T-Mobile, Verizon.

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