Alameda County property record for 643 S O St, Livermore, CA 94550 · Last verified October 2025
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,883 sqft · built 1957 |
| Lot Size | 0.172 acres (7,500 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $3,862 (2025) |
| Deeds & Mortgages | Feb 2020 Line of Credit Feb 2020 Transfer + 2 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 97-76-7 |
| Primary APN | 97-76-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 2 Stories |
| Building Area | 1,883 sqft Living Area |
| Year Built | Built 1957 |
|---|---|
| Effective Year Built | Effective 1958 |
| Architectural Style | Other |
| Construction Type | Wood |
| Lot Area | 7,500 sqft (0.172 acres) |
| Street Address | 643 S O ST |
|---|---|
| City | LIVERMORE |
| State | CA |
| Zip | 94550-4309 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | LIVERMORE-PLEASANTON |
| Census Block Group | 2 |
| Census Block | 2024 |
| Census Tract | 451602 |
Source: Alameda County records · APN 97-76-7
Assessment roll updated July 1, 2025 · Last verified October 2025
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 643 S O ST, LIVERMORE, CA 94550-4309 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Trust |
| Date | Document |
|---|---|
| Feb 04, 2020 | Quit Claim Deed, Transfer · Line of Credit UNCLE CU |
| Feb 04, 2020 | Quit Claim Deed, Transfer NORTH AMERICAN TITLE |
| Nov 13, 2017 | Quit Claim Deed, Transfer NORTH AMERICAN TITLE |
| Nov 03, 2017 | Quit Claim Deed, Transfer · Line of Credit UNCLE CU |
| Deed Names | Verified Name on Deed |
|---|---|
| Prior Sale | Feb 04, 2020 |
| Record Updated | Jun 08, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Feb 04, 2020 |
| Property Address | 643 S O ST, LIVERMORE, CA 94550-4309 |
| Document Number | 0000023941 |
| Instrument Date | Jan 08, 2020 |
| Instrument | 23941 |
| Transaction Type | Transfer |
| Record Updated | Apr 08, 2020 |
| Title Company | NORTH AMERICAN TITLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property |
| Address | 643 S O ST LIVERMORE CA 945504309, LIVERMORE, CA 94550-4309 |
| Document Number | 23942 |
|---|---|
| Date | Feb 04, 2020 |
| Instrument | 23942 |
| Name | UNCLE CU |
|---|---|
| Type | Credit Union |
| Address | LIVERMORE, CA 94551 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 300 Months |
| Due | Feb 03, 2045 |
| Rate Type | Adjustable Rate |
|---|
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Feb 04, 2020 |
| Property Address | 643 S O ST, LIVERMORE, CA 94550-4309 |
| Document Number | 0000023943 |
| Instrument Date | Jan 03, 2020 |
| Instrument | 23943 |
| Transaction Type | Transfer |
| Record Updated | Apr 08, 2020 |
| Title Company | NORTH AMERICAN TITLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 643 S O ST LIVERMORE CA 945504309, LIVERMORE, CA 94550-4309 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Nov 13, 2017 |
| Property Address | 643 S O ST, LIVERMORE, CA 94550-4309 |
| Document Number | 0000249031 |
| Instrument Date | Sep 21, 2017 |
| Instrument | 249031 |
| Transaction Type | Transfer |
| Record Updated | Dec 11, 2017 |
| Title Company | NORTH AMERICAN TITLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 643 S O ST LIVERMORE CA 945504309, LIVERMORE, CA 94550-4309 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Nov 03, 2017 |
| Property Address | 643 S O ST, LIVERMORE, CA 94550-4309 |
| Document Number | 0000243040 |
| Instrument Date | Sep 21, 2017 |
| Instrument | 243040 |
| Transaction Type | Transfer |
| Record Updated | Dec 04, 2017 |
| Title Company | NORTH AMERICAN TITLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 643 S O ST LIVERMORE CA 945504309, LIVERMORE, CA 94550-4309 |
| Document Number | 243041 |
|---|---|
| Date | Nov 03, 2017 |
| Instrument | 243041 |
| Name | UNCLE CU |
|---|---|
| Type | Credit Union |
| Address | LIVERMORE, CA 94551 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 300 Months |
| Due | Nov 02, 2042 |
| Rate Type | Adjustable Rate |
|---|
Source: Alameda County records · Assessment roll updated July 1, 2025 · Last verified October 2025
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Municipality | Livermore City |
| Unified School District | Livermore Valley Joint Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $3,862.00 (+4.49%) Homeowner's exemption | $242,914 (+4.04%) Land $90,744 Building $152,170 |
| 2023 | $3,696.00 Homeowner's exemption | $233,483 Land $87,221 Building $146,262 |
Source: FEMA National Flood Hazard Layer, Alameda County (06001C), updated May 25, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060014516022, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 1 in force |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| 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.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 451 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| AT&T | Fiber | 5,000 / 5,000 |
| Xfinity | Cable | 2,000 / 2,000 |
| Unwired | Fixed Wireless | 300 / 25 |
| Verizon | Fixed Wireless | 300 / 20 |
| Etheric Communications, LLC. | Fixed Wireless (licensed-by-rule) | 250 / 100 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
| AT&T | DSL | 100 / 20 |
May also be available at this address: Xfinity. Availability varies by address; speeds are provider-advertised maximums, not measured.
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