45 Mountain Ave, Sonoma, CA 95476 Property Records

Sonoma County property record for 45 Mountain Ave, Sonoma, CA 95476 · Last verified April 2026

Property Summary

Property Type	Single Family Home
Details	1 bd · 1 ba · 732 sqft · built 1907
Lot Size	0.243 acres (10,566 sqft)
Owner	Individual Name on File
Last Sale	$500,000 (Jul 2024)
Tax Bill	$7,245 (2025)
Deeds & Mortgages	Dec 2018 Transfer
Flood Zone	Zone X (minimal risk)
APN	`056-252-043-000`

Property Details

APN / Parcel Number

Primary APN	`056-252-043-000`
Alternative APN	`056-252-043`

Interior

Bedrooms	1 Bed
Full Baths	1 Bath
Total Rooms	1 Room
Stories	1 Story
Building Area	732 sqft Living Area
1st Floor Area	732 sqft

Exterior

Year Built	Built 1907
Effective Year Built	Effective 1975
Construction Type	Wood
Lot Area	10,566 sqft (0.243 acres)
Garage Area	224 sqft

Utilities, Heating & Cooling

Cooling System	HVAC

Location & Zoning

Old Parcel Number	056-252-043
Street Address	45 MOUNTAIN AVE
City	SONOMA
State	CA
Zip	95476-3436
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	80 FORM 56-252-26 & PT TO 44 OR 3541-254
Legal Subdivision	SUBDIVISION #1 OF AGUA CALIENTE PARK
Legal Block	2
Legal Lot Number	63
Jurisdiction	SONOMA CA
Township / Civil Division	SONOMA
Census Block Group	2
Census Block	2000
Census Tract	150306

Owner

Source: Sonoma County records · APN 056-252-043-000

Assessment roll updated April 13, 2026 · Last verified April 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 File
Mailing Address	45 MOUNTAIN AVE, SONOMA, CA 95476-3436
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Unmarried Woman

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Jul 01, 2024 · Amount on Record
Deed Sale	Jul 01, 2024 · Amount on Record
Deed Document Number	202428953
Prior Transfer Date	Nov 14, 2018
Prior Transfer Doc	0000082413
Record Updated	Jun 08, 2026

December 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SONOMA CA
Recording Date	Dec 03, 2018
Property Address	45 MOUNTAIN AVE, SONOMA, CA 95476-3436
Document Number	0000082413
Instrument Date	Nov 14, 2018
Instrument	82413
Transaction Type	Transfer
Record Updated	Dec 19, 2018
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Living Trust
Address	45 MOUNTAIN AVE SONOMA CA 954763436, SONOMA, CA 95476-3436

Tax Assessment & Valuation

Source: Sonoma County records · Assessment roll updated April 13, 2026 · Last verified April 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 and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Year	Tax Bill	Assessed Value
2025	$7,245.00 (+138.95%)	$500,000 (+286.33%) Land $335,000 Building $165,000
2023	$3,032.00 (+3.48%)	$129,422 Land $69,693 Building $59,729
2022	$2,930.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Sonoma County (06097C), updated February 15, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060971503062, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Special Flood Hazard Area	No
Flood Hazard	Minimal
500-Year Floodplain	No
Flood Insurance Cost	Premium on Record median of 2 individual NFIP policies nearby
Community Rating System	Class 10 (0% premium discount)
Nearby Flood Policies	2 in force 2 of 2 on primary residences

Wildfire

Wildfire Risk	Low above 34% of the US · above 20% of California
Wildfire Likelihood	About 1 in 2,778 per year
Exposure	Indirect within 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.