San Francisco City property record for 523 4th Ave, San Francisco, CA 94118
| Property Type | Single Family Home |
|---|---|
| Details | 1 ba · 1,830 sqft · built 1904 |
| Lot Size | 0.001 acres (30 sqft) |
| Owner | Company Name on File |
| Tax Bill | $10,893 (2025) |
| Deeds & Mortgages | Feb 2022 Line of Credit Aug 2021 Transfer + 3 more |
| APN | 1547-006 |
| Primary APN | 1547-006 |
|---|
| Full Baths | 1 Bath |
|---|---|
| Total Rooms | 6 Rooms |
| Stories | 2 Stories |
| Building Area | 1,830 sqft Living Area |
| 1st Floor Area | 1,830 sqft |
| Year Built | Built 1904 |
|---|---|
| Effective Year Built | Effective 1904 |
| Construction Type | Frame |
| Lot Area | 30 sqft (0.001 acres) |
| Street Address | 523 4TH AVE |
|---|---|
| City | SAN FRANCISCO |
| State | CA |
| Zip | 94118-3926 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RH2 |
| Legal Subdivision | OUTSIDE LAND BL 287 |
| Legal Block | 1547 |
| Legal Lot Number | 6 |
| Jurisdiction | SAN FRANCISCO CA |
| Township / Civil Division | RICHMOND-PRESIDIO-MARINA |
| Census Block Group | 3 |
| Census Block | 3004 |
| Census Tract | 45100 |
523 4th Ave is owned by a company that acquired it in September 2018.
Source: San Francisco City records, as of September 8, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 523 4TH AVE, SAN FRANCISCO, CA 94118-3926 |
| Owner Type | Company |
| Vesting | Life Tenant |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Feb 23, 2022 | Deed of Trust, Mortgage · Line of Credit THE POLICE CU |
| Aug 26, 2021 | Intrafamily Transfer, Transfer |
| Dec 6, 2019 | Deed of Trust, Mortgage ALLIED FIRST BK SB |
| Dec 6, 2018 | Affidavit of Death, Transfer FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Dec 6, 2018 | Quit Claim Deed, Mortgage ALLIED FIRST BK SB |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Sep 10, 2018 |
| Transfer Doc | K701556 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN FRANCISCO CA |
| Property Address | 523 4TH AVE, SAN FRANCISCO, CA 94118-3926 |
| Transaction Type | Mortgage |
| Record Updated | Mar 18, 2022 |
| Title Company | FIRST AMERICAN TITLE |
| Name | Verified Name |
|---|---|
| Address | 523 4TH AVE, SAN FRANCISCO, CA 94118-3926 |
| Document Number | 0000018408 |
|---|---|
| Date | Feb 23, 2022 |
| Instrument | 2022018408 |
| Name | THE POLICE CU |
|---|---|
| Type | Credit Union |
| Address | SAN BRUNO, CA 94066 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Feb 22, 2052 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN FRANCISCO CA |
| Recording Date | Aug 26, 2021 |
| Property Address | 523 4TH AVE, SAN FRANCISCO, CA 94118-3926 |
| Document Number | 2021136862 |
| Instrument Date | Aug 3, 2021 |
| Instrument | 2021136862 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Living Trust |
| Address | 523 4TH AVE, SAN FRANCISCO, CA 94118-3926 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN FRANCISCO CA |
| Property Address | 523 4TH AVE, SAN FRANCISCO, CA 94118-3926 |
| Document Number | 0K87900426 |
| Instrument Date | Dec 6, 2019 |
| Transaction Type | Mortgage |
| Record Updated | Jan 15, 2020 |
| Title Company | FIDELITY NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 523 4TH AVE SAN FRANCISCO CA 941183926, SAN FRANCISCO, CA 94118-3926 |
| Document Number | 0K87900426 |
|---|---|
| Date | Dec 19, 2019 |
| Instrument | K879426 |
| Name | ALLIED FIRST BK SB |
|---|---|
| Type | Bank |
| Address | OSWEGO, IL 60543 |
| Amount | Amount on Record |
|---|---|
| Term | 360 Months |
| Due | Dec 18, 2049 |
| Document Type | Affidavit of Death |
|---|---|
| Jurisdiction | SAN FRANCISCO CA |
| Recording Date | Dec 6, 2018 |
| Property Address | 523 4TH AVE, SAN FRANCISCO, CA 94118-3926 |
| Document Number | 0K70100555 |
| Instrument Date | Sep 10, 2018 |
| Instrument | K701555 |
| Transaction Type | Transfer |
| Record Updated | Dec 20, 2018 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 523 4TH AVE SAN FRANCISCO CA 941183926, SAN FRANCISCO, CA 94118-3926 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN FRANCISCO CA |
| Recording Date | Dec 6, 2018 |
| Property Address | 523 4TH AVE, SAN FRANCISCO, CA 94118-3926 |
| Document Number | 0K70100556 |
| Instrument Date | Sep 10, 2018 |
| Instrument | K701556 |
| Transaction Type | Mortgage |
| Record Updated | Dec 21, 2018 |
| Title Company | FIDELITY NATIONAL TITLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 523 4TH AVE SAN FRANCISCO CA 941183926, SAN FRANCISCO, CA 94118-3926 |
| Document Number | K70100557 |
|---|---|
| Date | Dec 6, 2018 |
| Instrument | K701557 |
| Name | ALLIED FIRST BK SB |
|---|---|
| Type | Bank |
| Address | OSWEGO, IL 60543 |
| Amount | Amount on Record |
|---|---|
| Term | 360 Months |
| Due | Dec 5, 2048 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 6% |
The 2025 property tax bill for 523 4th Ave was $10,893, up 2.9% from the year before.
Source: San Francisco City assessment roll, as of September 8, 2026
| Type | Name |
|---|---|
| State | California |
| County / Municipality | San Francisco City |
| Unified School District | San Francisco Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $869,922 (+2.01%) Land $600,535 Building $269,387 | |
| 2025 | $10,893.00 (+2.93%) | $852,816 Land $588,737 Building $264,079 |
| 2024 | $10,583.00 (+1.57%) | |
| 2023 | $10,419.00 (+2.02%) | $819,704 Land $565,878 Building $253,826 |
| 2022 | $10,213.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA has no flood map on file for 523 4th Ave.
Source: FEMA National Flood Hazard Layer
| FEMA Flood Zone | Not on file |
|---|
Values are read at the parcel center point; lenders make the official flood determination.
The area around 523 4th Ave has no burnable land within ember reach, so its wildfire risk is not rated.
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.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | SFPUC CITY DISTRIBUTION DIVISION serves 848,019 people · EPA ID CA3810011 |
|---|---|
| Water Source | Purchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM |
| Last State Inspection | Mar 2023 |
| Lead | Under 1 ppb (2022–2024) action level 15 ppb |
| 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.
Source: FCC Broadband Data Collection, based on 1,574 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Sonic Telecom Fiber | 1,000 / 1,000 |
| Verizon Fixed Wireless | 1,000 / 75 |
| Unwired Fixed Wireless | 300 / 25 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
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