San Francisco City property record for 50 Castle St, San Francisco, CA 94133
| Property Type | Apartments (5+ Units) |
|---|---|
| Details | 3 bd · 3 ba · 3,252 sqft · built 1906 |
| Lot Size | 0 acres (12 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $1,500,000 (May 2025) |
| Tax Bill | $9,498 (2025) |
| Deeds & Mortgages | Feb 2024 Transfer |
| APN | 0114-050 |
| Primary APN | 0114-050 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 9 Rooms |
| Units | 6 Units |
| Stories | 3 Stories |
| Building Area | 3,252 sqft Living Area |
| 1st Floor Area | 3,252 sqft |
| Year Built | Built 1906 |
|---|---|
| Effective Year Built | Effective 1906 |
| Architectural Style | Duplex Single |
| Construction Type | Frame |
| Lot Area | 12 sqft |
| Lot Dimensions | 58.8 ft deep x 20 ft wide |
| Street Address | 50 CASTLE ST |
|---|---|
| City | SAN FRANCISCO |
| State | CA |
| Zip | 94133-3518 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Apartments (5+ Units) |
| Local Zoning Code | RH3 |
| Legal Description | BLK 382 |
| Legal Subdivision | 50 VARA BL 382 |
| Legal Block | 114 |
| Legal Lot Number | 50 |
| Jurisdiction | SAN FRANCISCO CA |
| Township / Civil Division | DOWNTOWN-NORTHEAST NEIGHBORHOODS-TREASURE ISLAND |
| Census Block Group | 3 |
| Census Block | 3001 |
| Census Tract | 10402 |
50 Castle St, a residential property, is held in a trust since May 2025.
Source: San Francisco City records, as of September 8, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | PO BOX 460688, SAN FRANCISCO, CA 94146-0688 |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 16, 2025 · Amount on File |
| Deed Sale | May 16, 2025 · Amount on File |
| Deed Document Number | 202536653 |
| Prior Transfer Date | Jun 27, 2013 |
| Prior Transfer Doc | K934/0730 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN FRANCISCO CA |
| Recording Date | Feb 23, 2024 |
| Property Address | 50-54 CASTLE ST, SAN FRANCISCO, CA 94133 |
| Document Number | 0000016859 |
| Instrument Date | Feb 8, 2024 |
| Instrument | 2024016859 |
| Transaction Type | Transfer |
| Record Updated | Mar 6, 2024 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | PO BOX 1986, SAUSALITO, CA 94966-1986 |
The 2025 property tax bill for 50 Castle St was $9,498, up 3.1% 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 | $1,530,000 (+122.04%) Land $1,071,000 Building $459,000 | |
| 2025 | $9,498.00 (+3.06%) | $689,054 Land $382,807 Building $306,247 |
| 2024 | $9,216.00 (+3.09%) | |
| 2023 | $8,940.00 (+2.55%) | $662,299 Land $367,943 Building $294,356 |
| 2022 | $8,718.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA has no flood map on file for 50 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 50 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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