522 Northern Ave, Mill Valley, CA 94941 Property Records

Marin County property record for 522 Northern Ave, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	3 bd · 3 ba · 2,274 sqft · built 1961
Lot Size	0.331 acres (14,400 sqft)
Owner	2 Company Names on File
Last Sale	$500,000 (Apr 1995)
Tax Bill	$21,265 (2025)
Deeds & Mortgages	Oct 2021 Transfer Mar 2020 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`049-102-01`

Property Details

APN / Parcel Number

Primary APN	`049-102-01`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Total Rooms	6 Rooms
Stories	1 Story
Building Area	2,274 sqft Living Area
Basement Area	95 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1961
Effective Year Built	Effective 2003
Architectural Style	Contemporary
Exterior Material	Brick
Construction Type	Frame
Roof Material	Wood Shingle
Lot Area	14,400 sqft (0.331 acres)
Garage Area	420 sqft
Parking Spaces	2 Parking Spaces
Pool Area	504 sqft
Deck Area	649 sqft
Patio Area	649 sqft

Utilities, Heating & Cooling

Heating System	Central
Heating Fuel	Gas
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	522 NORTHERN AVE
City	MILL VALLEY
State	CA
Zip	94941-3781
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	RAB2
Legal Description	BLK 2 LOT 1
Legal Subdivision	TAMALPAIS VLY SUB #2
Legal Tract	2
Legal Block	2
Legal Lot Number	1
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	2
Census Block	2001
Census Tract	128100

Owner

522 Northern Ave is owned by a company that bought it in April 1995 and is owner-occupied.

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

Owner of Record	2 Company Names on File
Mailing Address	522 NORTHERN AVE, MILL VALLEY, CA 94941-3781
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Borrower in Default

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
Oct 27, 2021	Intrafamily Transfer, Transfer
Mar 16, 2020	Deed of Trust, Mortgage · Line of Credit BANK OF AMERICA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Apr 25, 1995 · Amount on File
Deed Sale	Apr 25, 1995 · Amount on File
Deed Document Number	199519180
Record Updated	Oct 29, 2026

October 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	MARIN CA
Recording Date	Oct 27, 2021
Property Address	522 NORTHERN AVE, MILL VALLEY, CA 94941-3781
Document Number	0000065139
Map Reference	VOL 5 PG 3
Instrument Date	Oct 15, 2021
Instrument	2021-0065139
Transaction Type	Transfer
Record Updated	Jun 7, 2023

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
Address	522 NORTHERN AVE, MILL VALLEY, CA 94941-3781

March 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	522 NORTHERN AVE, MILL VALLEY, CA 94941-3781
Document Number	0000017514
Instrument Date	Mar 16, 2020
Transaction Type	Mortgage
Record Updated	May 18, 2020
Title Company	WFG LENDER SERVICES, WFG LENDER SVCS

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	522 NORTHERN AVE MILL VALLEY CA 949413781, MILL VALLEY, CA 94941-3781

Mortgage

Document Number	0000017514
Date	May 5, 2020
Instrument	17514

Lender

Name	BANK OF AMERICA
Type	Bank
Address	TAMPA, FL 33634

Agreement

Type	Line of Credit
Amount	Amount on Record

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

The 2025 property tax bill for 522 Northern Ave was $21,265 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		$1,270,357 (+2%) Land $428,285 Building $842,072
2025	$21,265.00 Homeowner's exemption	$1,245,451 Land $419,887 Building $825,564
2023	$20,180.00 (+6.65%) Homeowner's exemption	$1,197,097 Land $403,585 Building $793,512
2022	$18,921.00

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

Flood

FEMA maps place 522 Northern Ave in Zone X, an area of minimal flood risk, though there have been 6 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	6 in force
Nearby Flood Claims	6 (1982–2019)
Claims Outside the SFHA	3 of 6
Most Recent Claim	Feb 2019 · Severe Winter Storms, Flooding, Landslides, And Mudslides
Claims by Event	Coastal Storms, Floods, Slides & Tornadoes, Mar 1983 · 3 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 522 Northern Ave is low, with a 0.04% annual chance of wildfire.

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

Wildfire Risk	Low lower than 66% of the US · lower than 80% of California
Wildfire Likelihood	0.04% 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 496 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: T-Mobile, Unwired, Verizon.

Cell Coverage

5G and 4G LTE (outdoors only)

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