18325 Sierra Dr, Sonoma, CA 95476 Property Records

Sonoma County property record for 18325 Sierra Dr, Sonoma, CA 95476

Property Summary

Property Type	Single Family Home
Details	4 bd · 1 ba · 2,011 sqft · built 1978
Lot Size	0.174 acres (7,560 sqft)
Owner	Trust Name on File
Tax Bill	$3,839 (2025)
Deeds & Mortgages	Jan 2021 Mortgage Jan 2018 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`056-433-015-000`

Property Details

APN / Parcel Number

Primary APN	`056-433-015-000`
Alternative APN	`056-433-015`

Interior

Bedrooms	4 Beds
Full Baths	1 Bath
Total Rooms	4 Rooms
Stories	2 Stories
Building Area	2,011 sqft Living Area
1st Floor Area	1,096 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1978
Effective Year Built	Effective 1979
Construction Type	Wood
Lot Area	7,560 sqft (0.174 acres)
Garage Area	484 sqft

Utilities, Heating & Cooling

Cooling System	HVAC

Location & Zoning

Old Parcel Number	056-433-015
Street Address	18325 SIERRA DR
City	SONOMA
State	CA
Zip	95476-4342
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R11UA
Legal Block	2
Jurisdiction	SONOMA CA
Township / Civil Division	SONOMA
Census Block Group	2
Census Block	2000
Census Tract	150305

Owner

18325 Sierra Dr is owner-occupied and held in a trust since July 2020.

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

Owner of Record	Trust Name on File
Mailing Address	18325B SIERRA DR, SONOMA, CA 95476-4342
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

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

Date	Document
Jan 20, 2021	Deed of Trust, Mortgage · Conventional Mortgage UMPQUA BANK
Jan 26, 2018	Deed of Trust, Mortgage · Commercial Mortgage UMPQUA BANK
Jan 26, 2018	Deed of Trust, Mortgage · Conventional Mortgage UMPQUA BANK
Jul 21, 2020	Quit Claim Deed, Transfer NOT AVAILABLE

Assessor's Deed Record

Deed Names	Name on Deed
Last Transfer Date	Jul 16, 2020
Transfer Doc	0000059909
Record Updated	Oct 29, 2026

January 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SONOMA CA
Property Address	18325 SIERRA DR, SONOMA, CA 95476-4342
Transaction Type	Mortgage
Record Updated	Feb 9, 2021
Title Company	FIRST AMERICAN TITLE FRESNO

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	18325 B SIERRA DRIVE, B, SONOMA, CA 95476-4342

Mortgage

Document Number	0000006044
Date	Jan 20, 2021
Instrument	2021006044

Lender

Name	UMPQUA BANK
Type	Bank
Address	PORTLAND, OR 97224

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Feb 1, 2051

January 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SONOMA CA
Property Address	18325 SIERRA DR, SONOMA, CA 95476-4342
Transaction Type	Mortgage
Record Updated	Feb 7, 2021
Title Company	FIRST AMERICAN TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000005797
Date	Jan 26, 2018
Instrument	2018005797

Lender

Name	UMPQUA BANK
Type	Bank
Address	SANTA ROSA, CA 95401

Agreement

Type	Commercial Mortgage
Amount	Amount on Record

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

January 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SONOMA CA
Property Address	18325 SIERRA DR, SONOMA, CA 95476-4342
Transaction Type	Mortgage
Record Updated	Feb 7, 2021
Title Company	FIRST AMERICAN TITLE CO LLC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000005796
Date	Jan 26, 2018
Instrument	2018005796

Lender

Name	UMPQUA BANK
Type	Bank
Address	MOUNTLAKE TERRACE, WA 98043

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Feb 1, 2048

July 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SONOMA CA
Recording Date	Jul 21, 2020
Property Address	18325 SIERRA DR, SONOMA, CA 95476-4342
Document Number	0000059909
Instrument Date	Jul 16, 2020
Instrument	59909
Transaction Type	Transfer
Record Updated	Aug 12, 2020
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	18325B SIERRA DR SONOMA CA 954764342, SONOMA, CA 95476-4342

Tax Assessment & Valuation

The 2025 property tax bill for 18325 Sierra Dr was $3,839 with a homeowner's exemption.

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

Property Jurisdictions

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$181,395 (+2%) Land $23,088 Building $158,307
2025	$3,839.00 Homeowner's exemption	$177,839 Land $22,636 Building $155,203
2023	$3,853.00 (+10.85%) Homeowner's exemption	$170,935 Land $21,758 Building $149,177
2022	$3,476.00

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

Flood

FEMA maps place 18325 Sierra Dr in Zone X, an area of minimal flood risk.

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
Community Rating System	Class 10 (0% premium discount)
Nearby Flood Policies	2 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

Wildfire risk around 18325 Sierra Dr is low, with a 0.01% annual chance of wildfire.

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

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 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	VALLEY OF THE MOON WATER DISTRICT serves 23,140 people · EPA ID CA4910013
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, 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 718 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
Starlink Satellite	280 / 30
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: T-Mobile.

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