San Francisco City property record for 4142 21st St, San Francisco, CA 94114
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3 ba · 2,682 sqft · built 1908 |
| Lot Size | 0.001 acres (24 sqft) |
| Owner | Trust Name on File |
| Last Sale | $1,020,000 (May 2016) |
| Tax Bill | $29,906 (2025) |
| APN | 2750-021 |
| Primary APN | 2750-021 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 2,682 sqft Living Area |
| Gross Area | 3,144 sqft |
| 1st Floor Area | 2,682 sqft |
| Basement Area | 462 sqft |
| Year Built | Built 1908 |
|---|---|
| Effective Year Built | Effective 1908 |
| Construction Type | Frame |
| Lot Area | 24 sqft (0.001 acres) |
| Lot Dimensions | 197 ft deep x 61.4 ft wide |
| Street Address | 4142 21ST ST |
|---|---|
| City | SAN FRANCISCO |
| State | CA |
| Zip | 94114-2711 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RH2 |
| Legal Subdivision | HORNERS ADD BL 211 |
| Legal Block | 2750 |
| Legal Lot Number | 21 |
| Jurisdiction | SAN FRANCISCO CA |
| Township / Civil Division | WESTERN ADDITION-BUENA VISTA-EUREKA VALLEY |
| Census Block Group | 3 |
| Census Block | 3003 |
| Census Tract | 20500 |
4142 21st St is held in a trust since May 2016.
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 | Trust Name on File |
|---|---|
| Mailing Address | 16485 BLACKBERRY HILL RD, LOS GATOS, CA 95030-7514 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 6, 2016 · Amount on File |
| Deed Sale | May 6, 2016 · Amount on File |
| Prior Sale | Dec 16, 2015 · Amount on File |
| Deed Document Number | 2016241410 |
| Prior Transfer Date | Mar 31, 2016 |
| Prior Transfer Doc | K241410 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 4142 21st St was $29,906, up 3% 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 | $2,509,613 (+2%) Land $1,435,728 Building $1,073,885 | |
| 2025 | $29,906.00 (+2.96%) | $2,460,368 Land $1,407,558 Building $1,052,810 |
| 2024 | $29,045.00 (+2.19%) | |
| 2023 | $28,422.00 (+6%) | $2,348,332 Land $1,352,902 Building $995,430 |
| 2022 | $26,812.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA has no flood map on file for 4142 21st St; 1 flood insurance policy is in force nearby.
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 |
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.
The area around 4142 21st St 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 1,850 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| Sonic Telecom Fiber | 1,000 / 1,000 |
| Unwired Fixed Wireless | 300 / 25 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: AT&T, GeoLinks, Google Fiber, T-Mobile, Verizon.
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