San Francisco City property record for 1643 20th Ave, San Francisco, CA 94122
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 480 sqft · built 1924 |
| Lot Size | 0.001 acres (30 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $5,009 (2025) |
| Deeds & Mortgages | May 2021 Transfer May 2021 Transfer |
| APN | 1923-008 |
| Primary APN | 1923-008 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 480 sqft Living Area |
| 1st Floor Area | 1,610 sqft |
| Basement Area | 480 sqft |
| Year Built | Built 1924 |
|---|---|
| Effective Year Built | Effective 1924 |
| Construction Type | Frame |
| Lot Area | 30 sqft (0.001 acres) |
| Lot Dimensions | 120 ft deep x 25 ft wide |
| Street Address | 1643 20TH AVE |
|---|---|
| City | SAN FRANCISCO |
| State | CA |
| Zip | 94122-3435 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RH2 |
| Legal Description | BLK 845 |
| Legal Subdivision | OUTSIDE LAND BL 845 |
| Legal Block | 1923 |
| Legal Lot Number | 8 |
| Jurisdiction | SAN FRANCISCO CA |
| Township / Civil Division | SUNSET |
| Census Block Group | 3 |
| Census Block | 3001 |
| Census Tract | 32602 |
Source: San Francisco City records, as of September 8, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 2286 CECILIA AVE, SAN FRANCISCO, CA 94116-1831 |
| Owner Type | Company |
| Vesting | Life Tenant |
| Date | Document |
|---|---|
| May 10, 2021 | Affidavit of Death of Joint Tenant, Transfer |
| May 10, 2021 | Intrafamily Transfer, Transfer |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Apr 24, 2021 |
| Transfer Doc | 0000077995 |
| Record Updated | Oct 29, 2026 |
| Document Type | Affidavit of Death of Joint Tenant |
|---|---|
| Jurisdiction | SAN FRANCISCO CA |
| Recording Date | May 10, 2021 |
| Property Address | 1643 20TH AVE, SAN FRANCISCO, CA 94122-3435 |
| Document Number | 2021077995 |
| Instrument Date | Apr 24, 2021 |
| Instrument | 2021077995 |
| Transaction Type | Transfer |
| Record Updated | Sep 22, 2021 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN FRANCISCO CA |
| Recording Date | May 10, 2021 |
| Property Address | 1643 20TH AVE, SAN FRANCISCO, CA 94122-3435 |
| Document Number | 2021077996 |
| Instrument Date | Apr 24, 2021 |
| Instrument | 2021077996 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Living Trust |
| Address | 2286 CECILIA AVE, SAN FRANCISCO, CA 94116-1831 |
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 | $314,856 (-5.04%) Land $182,820 Building $132,036 | |
| 2025 | $5,009.00 (+7.98%) | $331,581 (+4.04%) Land $182,818 Building $148,763 |
| 2023 | $4,639.00 (+2.59%) | $318,705 Land $175,719 Building $142,986 |
| 2022 | $4,522.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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.
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 1,892 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 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Etheric Networks, Verizon.
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