503 Jefferson St, Petaluma, CA 94952 Property Records

Sonoma County property record for 503 Jefferson St, Petaluma, CA 94952

Property Summary

Property TypeDuplex
Details4 bd · 2 ba · 1,584 sqft · built 1971
Lot Size0.093 acres (4,040 sqft)
Owner2 Individual Names on File
Last Sale$2,600,000 (May 2023)
Tax Bill$10,469 (2025)
Deeds & MortgagesMay 2023 Transfer
May 2023 Sale & Second Mortgage
+ 2 more
Flood ZoneZone X (minimal risk)
APN007-091-017-000

Property Details

APN / Parcel Number

Primary APN007-091-017-000
Alternative APN
  • 007-091-017

Interior

Bedrooms4 Beds
Full Baths2 Baths
Total Rooms6 Rooms
Units2 Units
Stories2 Stories
Building Area1,584 sqft Living Area

Exterior

Year BuiltBuilt 1971
Effective Year BuiltEffective 1996
Architectural StyleCustom Design
Construction TypeWood
Lot Area4,040 sqft (0.093 acres)
Garage TypeCarport
Garage Area357 sqft
CarportCarport
Carport Area357 sqft
Parking Spaces1 Parking Space

Utilities, Heating & Cooling

Cooling SystemNone
Heating SystemFloor/Wall Furnace

Location & Zoning

Old Parcel Number007-091-017
Street Address503 JEFFERSON ST
CityPETALUMA
StateCA
Zip94952-3307
Property CategoryResidential
Property TypeResidential > Multi-Unit > Duplex
Local Zoning CodeCITYPE
Legal Block1
JurisdictionSONOMA CA
Township / Civil DivisionPETALUMA
Census Block Group1
Census Block1009
Census Tract150701

Owner

503 Jefferson St, a duplex, is owned by two individuals who bought it in May 2023.

Source: Sonoma County records, as of September 1, 2026

Owner of Record2 Individual Names on File
Mailing Address21195 VIA COLOMBARD, SONOMA, CA 95476-8309
Owner TypeIndividual

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

DateDocument
May 11, 2023Intrafamily Transfer, Transfer
OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY
May 11, 2023Grant Deed, Transfer · Stand-Alone Second Mortgage
COLUMBIA STATE BANK
May 25, 2022Deed of Trust, Mortgage · Conventional Mortgage
FIRST REPUBLIC BANK
Apr 5, 2021Grant Deed, Transfer · Commercial Mortgage
HFS FUND IV LLC

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleMay 11, 2023 · Amount on File
Deed SaleMay 11, 2023 · Amount on File
Prior SaleApr 5, 2021 · Amount on File
Deed Document Number202320450
Transfer Doc0000042120
Record UpdatedOct 29, 2026

May 2023: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionSONOMA CA
Recording DateMay 11, 2023
Property Address503 JEFFERSON ST, PETALUMA, CA 94952-3307
Document Number0000020451
Map ReferenceMB 40 PG 13
Instrument DateMay 5, 2023
Instrument2023020451
Transaction TypeTransfer
Record UpdatedMay 26, 2023
Title CompanyOLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer
  • Multiple Parcels

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address21195 VIA COLOTHARD, SONOMA, CA 95476

May 2023: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionSONOMA CA
Recording DateMay 11, 2023
Property Address503 JEFFERSON ST, PETALUMA, CA 94952-3307
Document Number0000020450
Map ReferenceMB 40 PG 13
Instrument DateMay 5, 2023
Instrument2023020450
Transaction TypeTransfer
Record UpdatedMay 26, 2023
Title CompanyOLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

AmountAmount on Record
DownpaymentDownpayment on Record
Loan-to-Value (LTV)LTV on Record
Tax$8,060.00
Amount AccuracyRounded by County
Additional
  • Arm's Length
  • Multiple Parcels

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address21195 VIA COLOMARD, SONOMA, CA 95476-8309

Mortgage

Document Number0000020452
DateMay 11, 2023
Instrument2023020452
Lender
NameCOLUMBIA STATE BANK
TypeBank
Agreement
TypeStand-Alone Second Mortgage
AmountAmount on Record

May 2022: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionSONOMA CA
Property Address503 JEFFERSON ST, PETALUMA, CA 94952-3307
Transaction TypeMortgage
Record UpdatedJun 8, 2022
Title CompanyFIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

NameVerified Name
Address2155 POWELL ST 302, 302, SAN FRANCISCO, CA 94133-1948

Mortgage

Document Number0000036496
DateMay 25, 2022
Instrument2022036496
Lender
NameFIRST REPUBLIC BANK
TypeBank
AddressSAN FRANCISCO, CA 94111
Agreement
TypeConventional Mortgage
AmountAmount on Record
Term361 Months
DueJun 1, 2052
Interest
Rate TypeAdjustable Rate
Rate3.2%
Type Change DateJun 1, 2029
Change FrequencyMonthly
Min Rate At Change2.95%
Max Rate At Change10.9%
IndexOther
Max Rate10.9%

April 2021: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionSONOMA CA
Recording DateApr 5, 2021
Property Address503 JEFFERSON ST, PETALUMA, CA 94952-3307
Document Number0000042121
Map ReferenceMB 40 PG 13
Instrument DateMar 26, 2021
Instrument2021042121
Transaction TypeTransfer
Record UpdatedMay 26, 2021
Title CompanyFIDELITY NATIONAL TITLE CO

Transaction

AmountAmount on Record
DownpaymentDownpayment on Record
Loan-to-Value (LTV)LTV on Record
Tax$1,596.50
Amount AccuracyRounded by County
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address2155 POWELL ST, SAN FRANCISCO, CA 94133-1948

Mortgage

Document Number0000042122
DateApr 5, 2021
Instrument2021042122
Lender
NameHFS FUND IV LLC
TypeNon-Lending Institution
Agreement
TypeCommercial Mortgage
AmountAmount on Record

Tax Assessment & Valuation

The 2025 property tax bill for 503 Jefferson St was $10,469.

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

Property Jurisdictions

TypeName
StateCalifornia
CountySonoma County
MunicipalityPetaluma City
Elementary School DistrictPetaluma City Elementary School District (KG - 06)
Secondary School DistrictPetaluma Joint Union High School District (07 - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$923,250 (+65.62%) Land $265,302 Building $657,948
2025$10,469.00$557,450 Land $222,980 Building $334,470
2023$5,944.00 (+0.85%)$535,805 Land $214,322 Building $321,483
2022$5,894.00

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

FEMA maps place 503 Jefferson St in Zone X, an area of minimal flood risk, though there have been 36 flood claims nearby since 1980.

Source: FEMA National Flood Hazard Layer, effective February 15, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Community Rating SystemClass 6 (20% premium discount)
Nearby Flood Policies1 in force
Nearby Flood Claims36 (1980–2012)
Claims Outside the SFHA14 of 36
Most Recent ClaimDec 2012 · rainfall accumulation
Claims by Event
  • Severe Storms & Flooding, Feb 1986 · 10 claims
  • Coastal Storms, Floods, Slides & Tornadoes, Mar 1983 · 10 claims
  • Severe Storms, Flood, Mudslides & High Tide, Jan 1982 · 10 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

The area around 503 Jefferson St has no burnable land within ember reach, so its wildfire risk is not rated.

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

Wildfire RiskNot 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 SystemCITY OF PETALUMA
serves 61,427 people · EPA ID CA4910006
Water SourceGroundwater
Last State InspectionJun 2024
LeadUnder 1 ppb (2021–2023)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
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 318 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Sonic Telecom
Fiber
10,000 / 10,000
Xfinity
Cable
2,000 / 250
T-Mobile
Fixed Wireless
100 / 20

May also be available: AT&T, Verizon.

Nearby Properties on Jefferson St

Nearby Streets

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