San Francisco City property record for 3921 21st St, San Francisco, CA 94114
| Property Type | Condominium |
|---|---|
| Details | 1 ba · 388 sqft · built 1906 |
| Lot Size | 0.044 acres (1,901 sqft) |
| Owner | Individual Name on File |
| Last Sale | $495,000 (Nov 2007) |
| Tax Bill | $8,414 (2025) |
| APN | 2770-045 |
| Primary APN | 2770-045 |
|---|
| Full Baths | 1 Bath |
|---|---|
| Total Rooms | 2 Rooms |
| Stories | 1 Story |
| Building Area | 388 sqft Living Area |
| 1st Floor Area | 388 sqft |
| Year Built | Built 1906 |
|---|---|
| Effective Year Built | Effective 1906 |
| Architectural Style | Condo/Apartment |
| Construction Type | Frame |
| Lot Area | 1,901 sqft (0.044 acres) |
| Street Address | 3921 21ST ST |
|---|---|
| City | SAN FRANCISCO |
| State | CA |
| Zip | 94114-2804 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Condominium |
| Local Zoning Code | RH-2 |
| Legal Subdivision | PARCEL MAP 3919-3921 21ST STREET |
| Legal Block | 2770 |
| Legal Lot Number | 45 |
| Jurisdiction | SAN FRANCISCO CA |
| Township / Civil Division | WESTERN ADDITION-BUENA VISTA-EUREKA VALLEY |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 21200 |
3921 21st St, a condominium, is owned and occupied by an individual who bought it in November 2007.
Source: San Francisco City records, as of September 22, 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 | Individual Name on File |
|---|---|
| Mailing Address | PO BOX 14944, SAN FRANCISCO, CA 94114-0944 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 20, 2007 · Amount on File |
| Deed Sale | Nov 20, 2007 · Amount on File |
| Deed Document Number | 2007491362 |
| Deed Book / Page | 521 / 110 |
| Prior Transfer Date | Nov 7, 2005 |
| Prior Transfer Doc | J017/0182 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 3921 21st St was $8,414 with a homeowner's exemption, 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 | $663,196 (+2%) Land $397,918 Building $265,278 | |
| 2025 | $8,414.00 (+2.94%) Homeowner's exemption | $650,177 Land $390,109 Building $260,068 |
| 2024 | $8,174.00 (+1.63%) | |
| 2023 | $8,043.00 (+2.11%) Homeowner's exemption | $624,931 Land $374,961 Building $249,970 |
| 2022 | $7,877.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA has no flood map on file for 3921 21st St.
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 3921 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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