309 Walnut St, Petaluma, CA 94952 Property Records

Sonoma County property record for 309 Walnut St, Petaluma, CA 94952

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 1,212 sqft · built 1900
Lot Size	0.184 acres (8,000 sqft)
Owner	Company Name on Record
Last Sale	$850,000 (Apr 2018)
Tax Bill	$11,217 (2025)
Deeds & Mortgages	Apr 2018 Sale Apr 2018 Transfer
Flood Zone	Zone X (minimal risk)
APN	`006-201-009-000`

Property Details

APN / Parcel Number

Primary APN	`006-201-009-000`
Alternative APN	`006-201-009`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	3 Rooms
Stories	1 Story
Building Area	1,212 sqft Living Area
1st Floor Area	1,212 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1900
Effective Year Built	Effective 1973
Architectural Style	Custom Design
Construction Type	Wood
Lot Area	8,000 sqft (0.184 acres)
Garage Type	Detached
Garage Area	360 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	HVAC

Location & Zoning

Old Parcel Number	006-201-009
Street Address	309 WALNUT ST
City	PETALUMA
State	CA
Zip	94952-2746
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	CITYPE
Legal Subdivision	PETALUMA
Legal Block	4
Jurisdiction	SONOMA CA
Township / Civil Division	PETALUMA
Census Block Group	4
Census Block	4008
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	PO BOX 553, INVERNESS, CA 94937-0553
Owner Type	Company

Deeds, Mortgages & Sale History

Date	Document
Apr 19, 2018	Grant Deed, Transfer FIRST AMERICAN TITLE
Apr 19, 2018	Quit Claim Deed, Transfer FIRST AMERICAN TITLE

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Apr 19, 2018 · Amount on Record
Deed Sale	Apr 19, 2018 · Amount on Record
Deed Document Number	201826922
Prior Transfer Date	Apr 11, 2018
Prior Transfer Doc	0000026921
Record Updated	Oct 29, 2026

April 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SONOMA CA
Recording Date	Apr 19, 2018
Property Address	309 WALNUT ST, PETALUMA, CA 94952-2746
Document Number	0000026922
Instrument Date	Apr 16, 2018
Instrument	26922
Transaction Type	Transfer
Record Updated	May 3, 2018
Title Company	FIRST AMERICAN TITLE

Transaction

Amount	Amount Recorded
Tax	$935.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	1420 ROCKY RIDGE DR #100 ROSEVILLE CA 956612834, 100, ROSEVILLE, CA 95661-2834

April 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SONOMA CA
Recording Date	Apr 19, 2018
Property Address	309 WALNUT ST, PETALUMA, CA 94952-2746
Document Number	0000026921
Instrument Date	Apr 11, 2018
Instrument	26921
Transaction Type	Transfer
Record Updated	May 3, 2018
Title Company	FIRST AMERICAN TITLE

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	PO BOX 194 PETALUMA CA 949530194, PETALUMA, CA 94953-0194

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		$990,907 (+2%) Land $441,018 Building $549,889
2025	$11,217.00 (+9.54%)	$971,478 (+4.51%) Land $432,371 Building $539,107
2023	$10,240.00 (+1.31%)	$929,595 Land $415,583 Building $514,012
2022	$10,108.00

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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