4 Dorset Ln, Mill Valley, CA 94941 Property Records

Marin County property record for 4 Dorset Ln, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,576 sqft · built 1953
Lot Size	0.147 acres (6,400 sqft)
Owner	2 Individual Names on File
Last Sale	$1,400,000 (Jul 2017)
Tax Bill	$21,760 (2025)
Deeds & Mortgages	Aug 2021 Mortgage Dec 2019 Line of Credit + 4 more
Flood Zone	Zone AO (high risk)
APN	`030-172-14`

Property Details

APN / Parcel Number

Primary APN	`030-172-14`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,576 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1953
Effective Year Built	Effective 1980
Architectural Style	Contemporary
Exterior Material	Stucco
Construction Type	Frame
Roof Material	Tar & Gravel
Lot Area	6,400 sqft (0.147 acres)
Garage Area	360 sqft
Deck Area	128 sqft
Patio Area	128 sqft

Utilities, Heating & Cooling

Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	4 DORSET LN
City	MILL VALLEY
State	CA
Zip	94941-1522
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	MAP G3 606
Legal Subdivision	SUTTON MANOR 01
Legal Tract	1
Legal Lot Number	2
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	1
Census Block	1023
Census Tract	126200

Owner

4 Dorset Ln is owned and occupied by two individuals who bought it in July 2017.

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

Owner of Record	2 Individual Names on File
Mailing Address	4 DORSET LN, MILL VALLEY, CA 94941-1522
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

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 31, 2021	Deed of Trust, Mortgage · Conventional Mortgage PROVIDENT FUNDING ASSOCIATES LP
Dec 13, 2019	Deed of Trust, Mortgage · Line of Credit MUFG UNION BANK NA
Dec 13, 2019	Deed of Trust, Mortgage · Conventional Mortgage MUFG UNION BANK NA
Jan 11, 2021	Deed of Trust, Mortgage · Conventional Mortgage FLORIDA CAPITAL BANK NA
Jul 28, 2017	Grant Deed, Transfer OLD REPUBLIC TITLE
Jul 28, 2017	Grant Deed, Transfer · Conventional Mortgage MUFG UNION BANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 28, 2017 · Amount on File
Deed Sale	Jul 28, 2017 · Amount on File
Prior Sale	Jul 28, 2017 · Amount on File
Deed Document Number	201730262
Prior Transfer Date	Jan 31, 1994
Prior Transfer Doc	0000017407
Record Updated	Oct 29, 2026

August 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	4 DORSET LN, MILL VALLEY, CA 94941-1522
Transaction Type	Mortgage
Record Updated	Sep 15, 2021
Title Company	STEWART TITLE, STEWART TITLE OF CA INC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000054552
Date	Aug 31, 2021
Instrument	2021-0054552

Lender

Name	PROVIDENT FUNDING ASSOCIATES LP
Type	Mortgage Company
Address	ENGLEWOOD, CO 80111

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	4 DORSET LN, MILL VALLEY, CA 94941-1522
Transaction Type	Mortgage
Record Updated	Feb 7, 2021
Title Company	STEWART TITLE OF CA INC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000047331
Date	Dec 13, 2019
Instrument	2019-0047331

Lender

Name	MUFG UNION BANK NA
Type	Bank
Address	SAN DIEGO, CA 92121

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	361 Months
Due	Jan 5, 2050

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

December 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	4 DORSET LN, MILL VALLEY, CA 94941-1522
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	STEWART TITLE OF CA INC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000047330
Date	Dec 13, 2019
Instrument	2019-0047330

Lender

Name	MUFG UNION BANK NA
Type	Bank
Address	SAN DIEGO, CA 92121

Agreement

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

Interest

Rate Type	Adjustable Rate
Rate	4.12%
Type Change Date	Jan 1, 2027
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	6.12%
Index	1-Year LIBOR
Max Rate	10.1%

January 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	4 DORSET LN, MILL VALLEY, CA 94941-1522
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	STEWART TITLE OF CA INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4 DORSET LN, MILL VALLEY, CA 94941-1522

Mortgage

Document Number	0000002098
Date	Jan 11, 2021
Instrument	2021-0002098

Lender

Name	FLORIDA CAPITAL BANK NA
Type	Bank
Address	JACKSONVILLE, FL 32256

Agreement

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

Interest

Rate Type	Adjustable Rate
Rate	3.12%
Type Change Date	Feb 1, 2031
Change Frequency	Annually
Min Rate At Change	2.87%
Max Rate At Change	5.12%
Index	1-Year CMT
Max Rate	8.12%

July 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Jul 28, 2017
Property Address	4 DORSET LN, MILL VALLEY, CA 94941-1522
Document Number	0000030261
Instrument Date	Jul 3, 2017
Instrument	30261
Transaction Type	Transfer
Record Updated	Aug 29, 2017
Title Company	OLD REPUBLIC TITLE

Transaction

Amount	Amount on Record
Tax	$770.00
Amount Accuracy	Full Value
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	201 E GAY ST #333 WEST CHESTER PA 193802749, 333, WEST CHESTER, PA 19380-2749

July 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Jul 28, 2017
Property Address	4 DORSET LN, MILL VALLEY, CA 94941-1522
Document Number	0000030262
Map Reference	VOL7 PG84
Instrument Date	Jul 3, 2017
Instrument	2017-0030262
Transaction Type	Transfer
Record Updated	Aug 13, 2021
Title Company	OLD REPUBLIC TITLE CO

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	00000

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	4 DORSET LN, MILL VALLEY, CA 94941-1522

Mortgage

Document Number	0000030263
Date	Jul 28, 2017
Instrument	2017-0030263

Lender

Name	MUFG UNION BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Aug 1, 2047

Mortgage

Document Number	0000030264
Date	Jul 28, 2017
Instrument	2017-0030264

Lender

Name	MUFG UNION BANK NA
Type	Bank
Address	SAN DIEGO, CA 92121

Agreement

Amount	Amount on Record

Tax Assessment & Valuation

The 2025 property tax bill for 4 Dorset Ln was $21,760 with a homeowner's exemption.

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		$1,620,141 (+2%) Land $928,448 Building $691,693
2025	$21,760.00 Homeowner's exemption	$1,588,382 Land $910,248 Building $678,134
2023	$20,572.00 (+4.57%) Homeowner's exemption	$1,526,707 Land $874,904 Building $651,803
2022	$19,673.00

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

Flood

FEMA maps place 4 Dorset Ln in Zone AO, a high-risk flood area; flood insurance is required for federally backed loans.

Source: FEMA National Flood Hazard Layer, effective October 18, 2023 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone AO high risk · sheet flow 1–3 ft
100-Year Floodplain	Yes 1% annual chance
Floodway	No
Base Flood Elevation	Varies along the reach; see FIRM
Flood Insurance Requirement	Required federally backed loans
Flood Insurance Cost	Premium on File median of 86 individual policies
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	108 units insured incl. 22 condo units
Nearby Flood Claims	9 (1982–2019)
Claims Outside the SFHA	1 of 9
Most Recent Claim	Feb 2019 · Severe Winter Storms, Flooding, Landslides, And Mudslides
Claims by Event	Severe Storms, Flood, Mudslides & High Tide, Jan 1982 · 4 claims

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 4 Dorset Ln 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	None beyond ember reach

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

Provider	Max Down / Up (Mbps)
AT&T Fiber	5,000 / 5,000
Xfinity Cable	2,000 / 250

May also be available: Unwired.

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