23 Nelson Ave, Mill Valley, CA 94941 Property Records

Marin County property record for 23 Nelson Ave, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.5 ba · 2,175 sqft · built 1953
Lot Size	0.144 acres (6,250 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,105,000 (Feb 2013)
Tax Bill	$21,998 (2025)
Deeds & Mortgages	Feb 2021 Mortgage Jun 2020 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`030-061-12`

Property Details

APN / Parcel Number

Primary APN	`030-061-12`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Building Area	2,175 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1953
Effective Year Built	Effective 1976
Architectural Style	Contemporary
Lot Area	6,250 sqft (0.144 acres)
Deck Area	362 sqft
Patio Area	362 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	23 NELSON AVE
City	MILL VALLEY
State	CA
Zip	94941-2119
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Subdivision	AMICITA
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	2
Census Block	2011
Census Tract	126100

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 Individual Names on Record
Mailing Address	23 NELSON AVE, MILL VALLEY, CA 94941-2119
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Feb 3, 2021	Deed of Trust, Mortgage · Conventional Mortgage OWNING CORPORATION
Jun 4, 2020	Deed of Trust, Mortgage · Conventional Mortgage MECHANICS BANK
Mar 22, 2019	Deed of Trust, Mortgage · Line of Credit RABOBANK

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Feb 5, 2013 · Amount on Record
Deed Sale	Feb 5, 2013 · Amount on Record
Deed Document Number	20138110
Prior Transfer Date	Jan 8, 2003
Prior Transfer Doc	0000004599
Record Updated	Sep 20, 2026

February 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	23 NELSON AVE, MILL VALLEY, CA 94941-2119
Transaction Type	Mortgage
Record Updated	Feb 19, 2021
Title Company	ORANGE COAST TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	23 NELSON AVE, MILL VALLEY, CA 94941-2119

Mortgage

Document Number	0000007352
Date	Feb 3, 2021
Instrument	2021-0007352

Lender

Name	OWNING CORPORATION
Type	Non-Lending Institution
Address	ORANGE, CA 92868

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Feb 1, 2051

June 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	23 NELSON AVE, MILL VALLEY, CA 94941-2119
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	OLD REPUBLIC TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000022396
Date	Jun 4, 2020
Instrument	2020-0022396

Lender

Name	MECHANICS BANK
Type	Bank
Address	ARROYO GRANDE, CA 93421

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Jun 1, 2050

Interest

Rate Type	Adjustable Rate
Rate	3.12%
Type Change Date	Jun 1, 2030
Change Frequency	Annually
Min Rate At Change	2.75%
Max Rate At Change	5.12%
Index	1-Year CMT
Max Rate	9.12%

March 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	23 NELSON AVE, MILL VALLEY, CA 94941-2119
Document Number	0000009918
Instrument Date	Mar 22, 2019
Transaction Type	Mortgage
Record Updated	Apr 10, 2019
Title Company	FIRST AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	23 NELSON AVE MILL VALLEY CA 949412119, MILL VALLEY, CA 94941-2119

Mortgage

Document Number	0000009918
Date	Mar 28, 2019
Instrument	9918

Lender

Name	RABOBANK
Type	Bank
Address	SANTA ROSA, CA 95401

Agreement

Type	Line of Credit
Amount	Amount Recorded

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		$1,593,760 (+2%) Land $879,200 Building $714,560
2025	$21,998.00 (+4.44%)	$1,562,519 (+4.04%) Land $861,966 Building $700,553
2023	$21,063.00 (+2.6%)	$1,501,852 Land $828,499 Building $673,353
2022	$20,529.00

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 123 individual policies
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	147 units insured incl. 24 condo units
Nearby Flood Claims	81 (1979–2026)
Claims Outside the SFHA	8 of 81
Most Recent Claim	Apr 2026 · rainfall accumulation
Claims by Event	Severe Storms, Flooding, Mudslides, And Landslides, Jan 2006 · 33 claims Coastal Storms, Floods, Slides & Tornadoes, Jan 1983 · 3 claims Severe Storms, Flood, Mudslides & High Tide, Jan 1982 · 15 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 80% of the US · lower than 88% of California
Wildfire Likelihood	0.01% annual chance
Exposure	Indirect within 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 825 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · Fixed Wireless, DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20

May also be available: Etheric Networks, T-Mobile.

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