170 Mountain Ave, Sonoma, CA 95476 Property Records

Sonoma County property record for 170 Mountain Ave, Sonoma, CA 95476 · Last verified April 2026

Property Summary

Property Type	Duplex
Details	2 bd · 2.5 ba · 2,241 sqft · built 1914
Lot Size	0.34 acres (14,800 sqft)
Owner	Company Name on File
Last Sale	$127,000 (Jan 1997)
Tax Bill	$7,128 (2025)
Deeds & Mortgages	Oct 2020 Transfer
Flood Zone	Zone X (minimal risk)
APN	`056-321-011-000`

Property Details

APN / Parcel Number

Primary APN	`056-321-011-000`
Alternative APN	`056-321-011`

Interior

Bedrooms	2 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	2 Rooms
Units	2 Units
Stories	1 Story
Building Area	2,241 sqft Living Area
1st Floor Area	2,241 sqft

Exterior

Year Built	Built 1914
Effective Year Built	Effective 1980
Architectural Style	Custom Design
Construction Type	Wood
Lot Area	14,800 sqft (0.34 acres)
Garage Type	Carport
Garage Area	256 sqft
Carport	Carport
Carport Area	256 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	None
Heating System	Central

Location & Zoning

Old Parcel Number	056-321-011
Street Address	170 MOUNTAIN AVE
City	SONOMA
State	CA
Zip	95476-3439
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Legal Description	BLK 4 LOT 1
Legal Subdivision	SUBDIVISION OF E OF AGUA CALIENTE PARK
Legal Block	2
Legal Lot Number	1
Jurisdiction	SONOMA CA
Township / Civil Division	SONOMA
Census Block Group	2
Census Block	2003
Census Tract	150306

Owner

Source: Sonoma County records · APN 056-321-011-000

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	Company Name on File
Mailing Address	PO BOX 116, BOYES HOT SPRINGS, CA 95416-0116
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Jan 09, 1997 · Amount on Record
Deed Sale	Jan 09, 1997 · Amount on Record
Prior Sale	Mar 28, 1996 · Amount on Record
Deed Document Number	19972362
Last Transfer Date	Oct 28, 2020
Transfer Doc	0000100796
Record Updated	Jun 08, 2026

October 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SONOMA CA
Recording Date	Oct 30, 2020
Property Address	170 MOUNTAIN AVE, SONOMA, CA 95476-3439
Document Number	0000100796
Instrument Date	Oct 28, 2020
Instrument	100796
Transaction Type	Transfer
Record Updated	Nov 20, 2020
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	Personal Trust
Address	PO BOX 116 BOYES HOT SPRINGS CA 954160116, BOYES HOT SPRINGS, CA 95416-0116

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

Year	Tax Bill	Assessed Value
2025	$7,128.00 (+15.73%) Homeowner's exemption	$415,880 (+4.04%) Land $143,698 Building $272,182
2023	$6,159.00 (-1.47%) Homeowner's exemption	$399,733 Land $138,119 Building $261,614
2022	$6,251.00

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

Wildfire

Wildfire Risk	Low above 34% of the US · above 20% of California
Wildfire Likelihood	About 1 in 2,632 per year
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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, availability as of December 31, 2025 · Published October 2026 · based on 444 locations within about half a mile of this property

Provider	Technology	Download / Upload (Mbps)
Xfinity	Cable	2,000 / 250
Verizon	Fixed Wireless	300 / 20
T-Mobile USA	Fixed Wireless	100 / 20
AT&T	DSL	100 / 20

May also be available at this address: AT&T. Availability varies by address; speeds are provider-advertised maximums, not measured.