San Francisco City property record for 23 Castle St, San Francisco, CA 94133
| Property Type | Apartments (5+ Units) |
|---|---|
| Details | 2 ba · 1,746 sqft · built 1909 |
| Lot Size | 0 acres (12 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $2,821 (2025) |
| Deeds & Mortgages | Jun 2026 Transfer Sep 2017 Transfer + 1 more |
| APN | 0114-043 |
| Primary APN | 0114-043 |
|---|
| Full Baths | 2 Baths |
|---|---|
| Total Rooms | 9 Rooms |
| Units | 4 Units |
| Stories | 2 Stories |
| Building Area | 1,746 sqft Living Area |
| 1st Floor Area | 1,746 sqft |
| Year Built | Built 1909 |
|---|---|
| Effective Year Built | Effective 1909 |
| Architectural Style | Duplex Single |
| Construction Type | Frame |
| Lot Area | 12 sqft |
| Street Address | 23 CASTLE ST |
|---|---|
| City | SAN FRANCISCO |
| State | CA |
| Zip | 94133-3517 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Apartments (5+ Units) |
| Local Zoning Code | RH3 |
| Legal Subdivision | 50 VARA LT 379 |
| Legal Block | 114 |
| Legal Lot Number | 43 |
| Jurisdiction | SAN FRANCISCO CA |
| Township / Civil Division | DOWNTOWN-NORTHEAST NEIGHBORHOODS-TREASURE ISLAND |
| Census Block Group | 3 |
| Census Block | 3002 |
| Census Tract | 10402 |
23 Castle St, a residential property, is owned and occupied by an individual who acquired it in September 2017.
Source: San Francisco City records, as of September 8, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 23 CASTLE ST, SAN FRANCISCO, CA 94133-3517 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Jun 16, 2026 | Transfer on Death Deed, Transfer NONE LISTED ON DOCUMENT |
| Sep 13, 2017 | Quit Claim Deed, Transfer Quitclaim |
| Sep 13, 2017 | Quit Claim Deed, Transfer Quitclaim |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Sep 5, 2017 |
| Transfer Doc | K513197 |
| Record Updated | Oct 29, 2026 |
| Document Type | Transfer on Death Deed |
|---|---|
| Jurisdiction | SAN FRANCISCO CA |
| Recording Date | Jun 16, 2026 |
| Property Address | 23 CASTLE ST, SAN FRANCISCO, CA 94133-3517 |
| Document Number | 0000057143 |
| Instrument Date | Jun 15, 2026 |
| Instrument | 202657143 |
| Transaction Type | Transfer |
| Record Updated | Aug 30, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Amount Stated |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN FRANCISCO CA |
| Recording Date | Sep 13, 2017 |
| Property Address | 23-25 CASTLE ST, SAN FRANCISCO, CA 94133 |
| Document Number | 0K51300198 |
| Instrument Date | Sep 12, 2017 |
| Instrument | K513198 |
| Transaction Type | Transfer |
| Record Updated | Oct 18, 2017 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 23 CASTLE ST SAN FRANCISCO CA 941333517, SAN FRANCISCO, CA 94133-3517 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN FRANCISCO CA |
| Recording Date | Sep 13, 2017 |
| Property Address | 23-25 CASTLE ST, SAN FRANCISCO, CA 94133 |
| Document Number | 0K51300197 |
| Instrument Date | Sep 5, 2017 |
| Instrument | K513197 |
| Transaction Type | Transfer |
| Record Updated | Oct 4, 2017 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Tenants in Common |
| Address | 23 CASTLE ST SAN FRANCISCO CA 941333517, SAN FRANCISCO, CA 94133-3517 |
The 2025 property tax bill for 23 Castle St was $2,821, up 2.8% 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 | $234,271 (+2.2%) Land $81,064 Building $153,207 | |
| 2025 | $2,821.00 (+2.84%) | $229,223 Land $79,252 Building $149,971 |
| 2024 | $2,743.00 (+1.4%) | |
| 2023 | $2,705.00 (+0.97%) | $220,341 Land $76,183 Building $144,158 |
| 2022 | $2,679.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA has no flood map on file for 23 Castle 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 23 Castle 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 1,611 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 1,000 / 75 |
| Unwired Fixed Wireless | 300 / 25 |
| 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 |
May also be available: Astound Broadband, GeoLinks, Google Fiber, Sonic Telecom.
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