1 Underhill Rd, Mill Valley, CA 94941 Property Records

Marin County property record for 1 Underhill Rd, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	5 bd · 3 ba · 2,436 sqft · built 1961
Lot Size	0.42 acres (18,300 sqft)
Owner	Company Name on Record
Tax Bill	$8,249 (2025)
Deeds & Mortgages	Aug 2023 Line of Credit May 2022 Line of Credit + 3 more
Flood Zone	Zone X (minimal risk)
APN	`033-142-05`

Property Details

APN / Parcel Number

Primary APN	`033-142-05`

Interior

Bedrooms	5 Beds
Full Baths	3 Baths
Total Rooms	10 Rooms
Stories	1 Story
Building Area	2,436 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1961
Effective Year Built	Effective 1961
Architectural Style	Contemporary
Exterior Material	Wood Siding
Construction Type	Frame
Roof Material	Wood Shingle
Lot Area	18,300 sqft (0.42 acres)
Garage Area	484 sqft
Parking Spaces	2 Parking Spaces
Deck Area	104 sqft

Utilities, Heating & Cooling

Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	1 UNDERHILL RD
City	MILL VALLEY
State	CA
Zip	94941-1423
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	MAP 10 PG 69 UNIT 1 LOT 25
Legal Subdivision	SCOTT VLY 01
Legal Lot Number	25
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	1
Census Block	1009
Census Tract	126200

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	Company Name on Record
Mailing Address	1 UNDERHILL RD, MILL VALLEY, CA 94941-1423
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Aug 3, 2023	Deed of Trust, Mortgage · Line of Credit QUICKEN LOANS LLC
May 31, 2022	Deed of Trust, Mortgage · Line of Credit QUICKEN LOANS LLC
Feb 25, 2021	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LOANS LLC
Jan 4, 2018	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LNS
Jan 4, 2018	Deed of Trust, Mortgage · Line of Credit QUICKEN LNS

Assessor's Deed Record

Deed Names	Name on Deed
Last Transfer Date	May 9, 2008
Transfer Doc	0000023278
Record Updated	Sep 20, 2026

August 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	1 UNDERHILL RD, MILL VALLEY, CA 94941-1423
Transaction Type	Mortgage
Record Updated	Aug 16, 2023

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000019232
Date	Aug 3, 2023
Instrument	2023-0019232

Lender

Name	QUICKEN LOANS LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	324 Months
Due	Aug 4, 2050

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

May 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	1 UNDERHILL RD, MILL VALLEY, CA 94941-1423
Transaction Type	Mortgage
Record Updated	Jun 14, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000021431
Date	May 31, 2022
Instrument	2022-0021431

Lender

Name	QUICKEN LOANS LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	339 Months
Due	Aug 4, 2050

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

February 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	1 UNDERHILL RD, MILL VALLEY, CA 94941-1423
Transaction Type	Mortgage
Record Updated	Mar 10, 2021
Title Company	AMROCK INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1 UNDERHILL RD, MILL VALLEY, CA 94941-1423

Mortgage

Document Number	0000013219
Date	Feb 25, 2021
Instrument	2021-0013219

Lender

Name	QUICKEN LOANS LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	175 Months
Due	Sep 1, 2035

January 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	1 UNDERHILL RD, MILL VALLEY, CA 94941-1423
Document Number	0000000722
Instrument Date	Jan 4, 2018
Transaction Type	Mortgage
Record Updated	Mar 20, 2018
Title Company	TSI TITLE COMPANY/CA INC, TSI TITLE CO/CA INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	1 UNDERHILL RD MILL VALLEY CA 949411423, MILL VALLEY, CA 94941-1423

Mortgage

Document Number	0000000722
Date	Jan 11, 2018
Instrument	722

Lender

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

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	180 Months
Due	Jan 10, 2033

January 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	1 UNDERHILL RD, MILL VALLEY, CA 94941-1423
Document Number	0000002074
Instrument Date	Jan 4, 2018
Transaction Type	Mortgage
Record Updated	Nov 20, 2018
Title Company	OTHER

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	1 UNDERHILL RD MILL VALLEY CA 949411423, MILL VALLEY, CA 94941-1423

Mortgage

Document Number	0000002074
Date	Jan 24, 2018
Instrument	2074

Lender

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

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Jan 23, 2048

Interest

Rate Type	Adjustable Rate

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		$569,873 (+2%) Land $213,433 Building $356,440
2025	$8,249.00 (+2.4%) Homeowner's exemption	$558,700 (+4.04%) Land $209,248 Building $349,452
2023	$8,056.00 (+6.86%) Homeowner's exemption	$537,009 Land $201,124 Building $335,885
2022	$7,539.00

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
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record 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

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	0.03% 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 105 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25

May also be available: AT&T.

Cell Coverage

5G and 4G LTE (outdoors only)

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