18355 Riverside Dr, Sonoma, CA 95476 Property Records

Sonoma County property record for 18355 Riverside Dr, Sonoma, CA 95476

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 128 sqft · built 1940
Lot Size	0.379 acres (16,500 sqft)
Owner	2 Individual Names on File
Last Sale	$625,000 (Aug 2020)
Tax Bill	$9,855 (2025)
Deeds & Mortgages	Aug 2020 Sale
Flood Zone	Zone X (minimal risk)
APN	`052-231-005-000`

Property Details

APN / Parcel Number

Primary APN	`052-231-005-000`
Alternative APN	`052-231-005`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	3 Rooms
Stories	1 Story
Building Area	128 sqft Living Area
1st Floor Area	967 sqft

Exterior

Year Built	Built 1940
Effective Year Built	Effective 2002
Architectural Style	Custom Design
Construction Type	Wood
Lot Area	16,500 sqft (0.379 acres)

Utilities, Heating & Cooling

Cooling System	HVAC

Location & Zoning

Street Address	18355 RIVERSIDE DR
City	SONOMA
State	CA
Zip	95476-4278
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R15UA
Legal Description	CREEK FRONT ADDITION SONOMA VISTA TRACT LOT 29
Legal Subdivision	SONOMA VISTA
Legal Block	2
Legal Lot Number	29
Jurisdiction	SONOMA CA
Township / Civil Division	SONOMA
Census Block Group	2
Census Block	2000
Census Tract	150304

Owner

Source: Sonoma County records · APN 052-231-005-000

Assessment roll updated April 13, 2026 · Last verified May 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on File
Mailing Address	7319 LONGMONT LOOP, CASTRO VALLEY, CA 94552-5268
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Aug 05, 2020 · Amount on Record
Deed Sale	Aug 05, 2020 · Amount on Record
Prior Sale	Jun 12, 2003 · Amount on Record
Deed Document Number	202065533
Prior Transfer Date	Jun 14, 2002
Prior Transfer Doc	0000094761
Record Updated	Jun 08, 2026

August 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SONOMA CA
Recording Date	Aug 05, 2020
Property Address	18355 RIVERSIDE DR, SONOMA, CA 95476-4278
Document Number	0000065533
Instrument Date	Jul 24, 2020
Instrument	65533
Transaction Type	Transfer
Record Updated	Aug 25, 2020
Title Company	FIRST AMERICAN TITLE

Transaction

Amount	Amount Recorded
Tax	$688.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	7319 LONGMONT LOOP CASTRO VALLEY CA 945525268, CASTRO VALLEY, CA 94552-5268

Tax Assessment & Valuation

Source: Sonoma County records · Assessment roll updated April 13, 2026 · Last verified May 2026

Property Jurisdictions

Type	Name
State	California
County	Sonoma County
Unified School District	Sonoma Valley Unified School District (KG - 12)

Tax Bill & Assessment History

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

Year	Tax Bill	Assessed Value
2025	$9,855.00 (+11.87%)	$719,497 (+10.65%) Land $378,850 Building $340,647
2023	$8,809.00 (+1.89%)	$650,250 Land $364,140 Building $286,110
2022	$8,646.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of February 15, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AE, within 100 ft
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 10 (0% premium discount)
Nearby Flood Policies	8 in force
Nearby Flood Claims	2 (2005–2017)
Most Recent Claim	Feb 2017 · Severe Winter Storms, Flooding, And Mudslides

Wildfire

Wildfire Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.01% annual chance
Exposure	None beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
T-Mobile USA Fixed Wireless	100 / 20
AT&T DSL · Fiber, Fixed Wireless in parts of the area	100 / 20

May also be available: Verizon.

Based on FCC filings for 711 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	VALLEY OF THE MOON WATER DISTRICT serves 23,140 people
Water Source	Groundwater
Last State Inspection	Sep 2022
Lead	Under 1 ppb (2024–2026) 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.