623 Sonoma Ave, Livermore, CA 94550 Property Records

Alameda County property record for 623 Sonoma Ave, Livermore, CA 94550

Property Summary

Property Type	Single Family Home
Details	1,480 sqft · built 1962
Lot Size	0.14 acres (6,112 sqft)
Owner	Company Name on Record
Tax Bill	$1,876 (2025)
Deeds & Mortgages	Oct 2019 Line of Credit Oct 2019 Transfer
Flood Zone	Zone X (minimal risk)
APN	`99-308-53`

Property Details

APN / Parcel Number

Primary APN	`99-308-53`
Alternative APN	`099-0308-053-00`

Interior

Building Area	1,480 sqft Living Area

Exterior

Year Built	Built 1962
Effective Year Built	Effective 1963
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	6,112 sqft (0.14 acres)

Location & Zoning

Street Address	623 SONOMA AVE
City	LIVERMORE
State	CA
Zip	94550-4047
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00029 BLK: TR: 2264
Legal Subdivision	2264 LIVERMORE
Legal Tract	2264
Jurisdiction	ALAMEDA CA
Township / Civil Division	LIVERMORE-PLEASANTON
Census Block Group	2
Census Block	2004
Census Tract	451701

Owner

Source: Alameda County records, as of August 5, 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 Record
Mailing Address	623 SONOMA AVE, LIVERMORE, CA 94550-4047
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Oct 4, 2019	Quit Claim Deed, Transfer · Line of Credit UNCLE CU
Oct 4, 2019	Quit Claim Deed, Transfer NORTH AMERICAN TITLE

Assessor's Deed Record

Deed Names	Name on Deed
Last Transfer Date	Aug 12, 2019
Transfer Doc	0000201076
Record Updated	Oct 29, 2026

October 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ALAMEDA CA
Recording Date	Oct 4, 2019
Property Address	623 SONOMA AVE, LIVERMORE, CA 94550-4047
Document Number	0000201074
Instrument Date	Aug 12, 2019
Instrument	201074
Transaction Type	Transfer
Record Updated	Oct 28, 2019
Title Company	NORTH AMERICAN TITLE

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	623 SONOMA AVE LIVERMORE CA 945504047, LIVERMORE, CA 94550-4047

Mortgage

Document Number	201075
Date	Oct 4, 2019
Instrument	201075

Lender

Name	UNCLE CU
Type	Credit Union
Address	LIVERMORE, CA 94551

Agreement

Type	Line of Credit
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate

October 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ALAMEDA CA
Recording Date	Oct 4, 2019
Property Address	623 SONOMA AVE, LIVERMORE, CA 94550-4047
Document Number	0000201076
Instrument Date	Aug 12, 2019
Instrument	201076
Transaction Type	Transfer
Record Updated	Oct 28, 2019
Title Company	NORTH AMERICAN TITLE

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	623 SONOMA AVE LIVERMORE CA 945504047, LIVERMORE, CA 94550-4047
Investor	Possibly a Property Investor

Tax Assessment & Valuation

Source: Alameda County assessment roll, as of August 5, 2026

Property Jurisdictions

Type	Name
State	California
County	Alameda County
Municipality	Livermore City
Unified School District	Livermore Valley Joint Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$74,298 (-6.78%) Land $16,495 Building $64,803
2025	$1,876.00 (+6.47%) Homeowner's exemption	$79,705 (+4.04%) Land $16,172 Building $63,533
2023	$1,762.00 Homeowner's exemption	$76,610 Land $15,544 Building $61,066	$845,550

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective May 25, 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

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

Wildfire Risk	Not 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 System	CALIFORNIA WATER SERVICE - LIVERMORE private · serves 60,414 people · EPA ID CA0110003
Water Source	Purchased surface water from ZONE 7 WATER AGENCY
Last State Inspection	Dec 2024
Also Mapped Here	CITY OF LIVERMORE
Lead	8 ppb (2022–2024) 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 348 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 2,000
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100

May also be available: T-Mobile.

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