309 12th St, Petaluma, CA 94952 Property Records

Sonoma County property record for 309 12th St, Petaluma, CA 94952

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 1,134 sqft · built 1928
Lot Size	0.138 acres (6,000 sqft)
Owner	Individual Name on Record
Last Sale	$167,000 (Sep 1990)
Tax Bill	$4,626 (2025)
Deeds & Mortgages	Jun 2017 Transfer
Flood Zone	Zone X (minimal risk)
APN	`008-382-020-000`

Property Details

APN / Parcel Number

Primary APN	`008-382-020-000`
Alternative APN	`008-382-020`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	2 Rooms
Stories	1 Story
Building Area	1,134 sqft Living Area
1st Floor Area	1,134 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1928
Effective Year Built	Effective 1939
Architectural Style	L-Shape
Lot Area	6,000 sqft (0.138 acres)

Utilities, Heating & Cooling

Cooling System	None

Location & Zoning

Old Parcel Number	008-382-020
Street Address	309 12TH ST
City	PETALUMA
State	CA
Zip	94952-4105
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	CITYPE
Legal Description	SUNNY SLOPE ADD BLK 8 LOT 16
Legal Subdivision	SUNNY SLOPE ADD
Legal Block	8
Legal Lot Number	16
Jurisdiction	SONOMA CA
Township / Civil Division	PETALUMA
Census Block Group	4
Census Block	4003
Census Tract	150701

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	Individual Name on Record
Mailing Address	309 12TH ST, PETALUMA, CA 94952-4105
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Sep 13, 1990 · Amount on Record
Deed Sale	Sep 13, 1990 · Amount on Record
Deed Document Number	199091019
Last Transfer Date	Jun 1, 2017
Transfer Doc	0000046690
Record Updated	Oct 29, 2026

June 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SONOMA CA
Recording Date	Jun 15, 2017
Property Address	309 12TH ST, PETALUMA, CA 94952-4105
Document Number	0000046690
Instrument Date	Jun 1, 2017
Instrument	46690
Transaction Type	Transfer
Record Updated	Jun 28, 2017

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Tenants in Common
Address	1194 TREAT AVE SAN FRANCISCO CA 941104124, SAN FRANCISCO, CA 94110-4124

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		$396,471 (+2%) Land $270,390 Building $126,081
2025	$4,626.00 (+10.62%)	$388,698 (+4.04%) Land $265,089 Building $123,609
2023	$4,182.00 (+0.87%)	$373,607 Land $254,797 Building $118,810
2022	$4,146.00

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
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	3 in force

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 62% of the US · lower than 77% of California
Wildfire Likelihood	0.06% annual chance
Exposure	Direct burnable vegetation

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 628 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 in parts of the area	100 / 20