San Francisco City property record for 578 4th St, San Francisco, CA 94107
| Property Type | R&D Facility, Laboratory |
|---|---|
| Details | 3 ba · built 1946 |
| Lot Size | 0.001 acres (40 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $2,897 (2025) |
| APN | 3777-031 |
| Primary APN | 3777-031 |
|---|
| Full Baths | 3 Baths |
|---|---|
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Year Built | Built 1946 |
|---|---|
| Effective Year Built | Effective 1946 |
| Construction Type | Masonry / Concrete Block |
| Fire Resistance | Masonry Walls, Wood Interior |
| Lot Area | 40 sqft (0.001 acres) |
| Street Address | 578 4TH ST |
|---|---|
| City | SAN FRANCISCO |
| State | CA |
| Zip | 94107-1620 |
| Property Category | Industrial |
| Property Type | Industrial > R&D Facility, Laboratory |
| Local Zoning Code | SLI |
| Legal Block | 3777 |
| Legal Lot Number | 31 |
| Jurisdiction | SAN FRANCISCO CA |
| Township / Civil Division | SOMA-POTRERO-MISSION BAY |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 18000 |
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 | 1187 COAST VILLAGE RD, 1, SANTA BARBARA, CA 93108-2761 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| 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 | $180,259 (+2.02%) Land $72,101 Building $108,158 | |
| 2025 | $2,897.00 (+4.77%) | $176,684 (+4.04%) Land $70,666 Building $106,018 |
| 2023 | $2,765.00 (+2.56%) | $169,825 Land $67,923 Building $101,902 |
| 2022 | $2,696.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Not on file |
|---|---|
| Nearby Flood Claims | 1 (1979) |
| Most Recent Claim | Sep 1979 · tidal / storm surge |
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.
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 383 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable · Fiber in parts of the area | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| AT&T Fixed Wireless · Fiber in parts of the area | 100 / 20 |
May also be available: Astound Broadband, Etheric Networks, GeoLinks, Google Fiber, Sail Internet, T-Mobile, Verizon.
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