520 Walnut St, Petaluma, CA 94952 Property Records

Sonoma County property record for 520 Walnut St, Petaluma, CA 94952

Property Summary

Property Type	Single Family Home
Details	4 bd · 4 ba · 2,464 sqft · built 1910
Lot Size	0.098 acres (4,250 sqft)
Owner	Company Name on Record
Last Sale	$185,000 (Oct 1998)
Tax Bill	$6,111 (2025)
Deeds & Mortgages	Feb 2021 Line of Credit Dec 2020 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`006-151-001-000`

Property Details

APN / Parcel Number

Primary APN	`006-151-001-000`
Alternative APN	`006-151-001`

Interior

Bedrooms	4 Beds
Full Baths	4 Baths
Total Rooms	9 Rooms
Stories	2 Stories
Building Area	2,464 sqft Living Area
1st Floor Area	890 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1910
Effective Year Built	Effective 1968
Architectural Style	Custom Design
Construction Type	Wood
Lot Area	4,250 sqft (0.098 acres)

Utilities, Heating & Cooling

Cooling System	HVAC

Location & Zoning

Old Parcel Number	006-151-001
Street Address	520 WALNUT ST
City	PETALUMA
State	CA
Zip	94952-2752
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	CITYPE
Legal Description	MAP C6 465
Legal Subdivision	WALNUT STREET
Legal Block	4
Jurisdiction	SONOMA CA
Township / Civil Division	PETALUMA
Census Block Group	4
Census Block	4005
Census Tract	150902

Owner

Source: Sonoma County records, as of September 1, 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	520 WALNUT ST, PETALUMA, CA 94952-2752
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Feb 16, 2021	Deed of Trust, Mortgage · Line of Credit BANK OF THE WEST
Dec 9, 2020	Deed of Trust, Mortgage · Conventional Mortgage BANK OF THE WEST
Aug 4, 2017	Deed of Trust, Mortgage · Line of Credit BANK OF THE WEST

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Oct 16, 1998 · Amount on Record
Deed Sale	Oct 16, 1998 · Amount on Record
Deed Document Number	1998120265
Last Transfer Date	Apr 23, 2011
Transfer Doc	0000039541
Record Updated	Oct 29, 2026

February 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SONOMA CA
Property Address	520 WALNUT ST, PETALUMA, CA 94952-2752
Transaction Type	Mortgage
Record Updated	Mar 5, 2021
Title Company	FIRST AMERICAN TITLE, FIRST AMERICAN TITLE INS CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	520 WALNUT ST, PETALUMA, CA 94952-2752

Mortgage

Document Number	0000017951
Date	Feb 16, 2021
Instrument	2021017951

Lender

Name	BANK OF THE WEST
Type	Bank
Address	SEATTLE, WA 98154

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	361 Months
Due	Mar 1, 2051

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

December 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SONOMA CA
Property Address	520 WALNUT ST, PETALUMA, CA 94952-2752
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	FIRST AMERICAN TITLE INS CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	520 WALNUT ST, PETALUMA, CA 94952-2752

Mortgage

Document Number	0000117118
Date	Dec 9, 2020
Instrument	2020117118

Lender

Name	BANK OF THE WEST
Type	Bank
Address	OMAHA, NE 68154

Agreement

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

August 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SONOMA CA
Property Address	520 WALNUT ST, PETALUMA, CA 94952-2752
Document Number	0000062451
Instrument Date	Aug 4, 2017
Transaction Type	Mortgage
Record Updated	Aug 23, 2017
Title Company	FIRST AMERICAN TITLE, FIRST AMERICAN TITLE INSURANCE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	520 WALNUT ST PETALUMA CA 949522752, PETALUMA, CA 94952-2752

Mortgage

Document Number	0000062451
Date	Aug 11, 2017
Instrument	62451

Lender

Name	BANK OF THE WEST
Type	Bank
Address	PETALUMA, CA 94952

Agreement

Type	Line of Credit
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

Source: Sonoma County assessment roll, as of September 1, 2026

Property Jurisdictions

Type	Name
State	California
County	Sonoma County
Municipality	Petaluma City
Elementary School District	Petaluma City Elementary School District (KG - 06)
Secondary School District	Petaluma Joint Union High School District (07 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$537,768 (+2%) Land $223,867 Building $313,901
2025	$6,111.00 (+10.25%) Homeowner's exemption	$527,225 (+5.12%) Land $219,478 Building $307,747
2023	$5,543.00 (+1.91%) Homeowner's exemption	$501,552 Land $210,956 Building $290,596
2022	$5,439.00

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

Flood

Source: FEMA National Flood Hazard Layer, effective February 15, 2026 · 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
Nearby Flood Claims	1 (1982)
Most Recent Claim	Jan 1982 · Severe Storms, Flood, Mudslides & High Tide

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	Not rated no burnable land 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	CITY OF PETALUMA serves 61,427 people · EPA ID CA4910006
Water Source	Groundwater
Last State Inspection	Jun 2024
Lead	Under 1 ppb (2021–2023) 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.

Internet Providers

Source: FCC Broadband Data Collection, based on 752 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Sonic Telecom Fiber	10,000 / 10,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
AT&T DSL · Fiber, Fixed Wireless in parts of the area	100 / 20

May also be available: T-Mobile.

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