San Francisco City property record for 490 20th Ave, San Francisco, CA 94121
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1 ba · 1,768 sqft · built 1916 |
| Lot Size | 0 acres (14 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $5,678 (2025) |
| APN | 1525-024A |
| Primary APN | 1525-024A |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 1,768 sqft Living Area |
| 1st Floor Area | 1,768 sqft |
| Basement Area | 700 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1916 |
|---|---|
| Effective Year Built | Effective 1916 |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Tar & Gravel |
| Lot Area | 14 sqft |
| Lot Dimensions | 57.5 ft deep x 25 ft wide |
| Garage Type | Covered |
| Heating System | Gravity Furnace |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 490 20TH AVE |
|---|---|
| City | SAN FRANCISCO |
| State | CA |
| Zip | 94121-3121 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RM1 |
| Legal Description | BLK 265 |
| Legal Subdivision | OUTSIDE LAND BL 265 |
| Legal Block | 1525 |
| Legal Lot Number | 24A |
| Jurisdiction | SAN FRANCISCO CA |
| Township / Civil Division | RICHMOND-PRESIDIO-MARINA |
| Census Block Group | 1 |
| Census Block | 1007 |
| Census Tract | 47600 |
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 | 490 20TH AVE, SAN FRANCISCO, CA 94121-3121 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Borrower in Default |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Nov 17, 2014 |
| Transfer Doc | J975482 |
| 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 | $487,363 (+2.01%) Land $298,725 Building $188,638 | |
| 2025 | $5,678.00 (-8.33%) Homeowner's exemption | $477,747 (+4.04%) Land $292,846 Building $184,901 |
| 2024 | $6,194.00 (+1.69%) | |
| 2023 | $6,091.00 (+2.18%) Homeowner's exemption | $459,198 Land $281,475 Building $177,723 |
| 2022 | $5,961.00 |
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 1,513 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Sonic Telecom Fiber | 1,000 / 1,000 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
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