San Francisco City property record for 1640 20th St, San Francisco, CA 94107
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 4 ba · 2,458 sqft · built 1926 |
| Lot Size | 0.001 acres (20 sqft) |
| Owner | Company Name on Record |
| Last Sale | $1,489,500 (Jan 2005) |
| Tax Bill | $27,072 (2025) |
| APN | 4068-012 |
| Primary APN | 4068-012 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,458 sqft Living Area |
| 1st Floor Area | 2,458 sqft |
| Year Built | Built 1926 |
|---|---|
| Effective Year Built | Effective 1926 |
| Construction Type | Frame |
| Lot Area | 20 sqft (0.001 acres) |
| Street Address | 1640 20TH ST |
|---|---|
| City | SAN FRANCISCO |
| State | CA |
| Zip | 94107-2811 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RH2 |
| Legal Description | MAP B2 11 |
| Legal Subdivision | PORTRERO NUEVO BL 231 |
| Legal Block | 4068 |
| Legal Lot Number | 12 |
| Jurisdiction | SAN FRANCISCO CA |
| Township / Civil Division | SOMA-POTRERO-MISSION BAY |
| Census Block Group | 2 |
| Census Block | 2006 |
| Census Tract | 22702 |
Source: San Francisco City records, as of September 8, 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 | 1640 20TH ST, SAN FRANCISCO, CA 94107-2811 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Living Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 20, 2005 · Amount on Record |
| Deed Sale | Jan 20, 2005 · Amount on Record |
| Prior Sale | Aug 31, 1994 · Amount on Record |
| Deed Document Number | 2005890712 |
| Deed Book / Page | 809 / 50 |
| Last Transfer Date | Feb 23, 2013 |
| Transfer Doc | K856/0379 |
| Record Updated | Oct 29, 2026 |
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 | $2,265,221 (+2%) Land $1,270,663 Building $994,558 | |
| 2025 | $27,072.00 (+2.96%) | $2,220,761 (+4.04%) Land $1,245,735 Building $975,026 |
| 2024 | $26,293.00 (+1.5%) | |
| 2023 | $25,904.00 (+1.9%) | $2,134,528 Land $1,197,362 Building $937,166 |
| 2022 | $25,420.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Not on file |
|---|---|
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 1 (1978) |
| Most Recent Claim | Jan 1978 · tidal / storm surge |
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: 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 883 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable · Fiber in parts of the area | 2,000 / 250 |
| Astound Broadband Cable · Fiber in parts of the area | 1,500 / 50 |
| Verizon Fixed Wireless | 1,000 / 75 |
| Unwired Fixed Wireless | 300 / 25 |
| Starlink Satellite | 280 / 30 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: GeoLinks, Google Fiber, Sonic Telecom, T-Mobile.
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