San Francisco City property record for 527 Union St, San Francisco, CA 94133
| Property Type | Apartments (5+ Units) |
|---|---|
| Details | 4 ba · 2,346 sqft · built 1906 |
| Lot Size | 0 acres (15 sqft) |
| Owner | Company Name on Record |
| Last Sale | $1,638,000 (Sep 2014) |
| Tax Bill | $24,653 (2025) |
| APN | 0116-045 |
| Primary APN | 0116-045 |
|---|
| Full Baths | 4 Baths |
|---|---|
| Total Rooms | 13 Rooms |
| Units | 8 Units |
| Stories | 3 Stories |
| Building Area | 2,346 sqft Living Area |
| 1st Floor Area | 2,346 sqft |
| Year Built | Built 1906 |
|---|---|
| Effective Year Built | Effective 1906 |
| Architectural Style | Duplex Single |
| Construction Type | Frame |
| Lot Area | 15 sqft |
| Street Address | 527 UNION ST |
|---|---|
| City | SAN FRANCISCO |
| State | CA |
| Zip | 94133-3337 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Apartments (5+ Units) |
| Local Zoning Code | RM2 |
| Legal Subdivision | 50 VARA |
| Legal Block | 116 |
| Legal Lot Number | 45 |
| Jurisdiction | SAN FRANCISCO CA |
| Township / Civil Division | DOWNTOWN-NORTHEAST NEIGHBORHOODS-TREASURE ISLAND |
| Census Block Group | 3 |
| Census Block | 3005 |
| Census Tract | 10600 |
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 | 1725 HUNT DR, BURLINGAME, CA 94010-5810 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 22, 2014 · Amount on Record |
| Deed Sale | Sep 22, 2014 · Amount on Record |
| Prior Sale | Apr 30, 2013 · Amount on Record |
| Deed Document Number | 2014953092 |
| Prior Transfer Date | Nov 30, 2012 |
| Prior Transfer Doc | K791/0277 |
| 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 | $2,010,367 (+2.12%) Land $1,405,605 Building $602,402 | |
| 2025 | $24,653.00 (+3.01%) | $1,968,621 (+4.04%) Land $1,378,037 Building $590,584 |
| 2024 | $23,933.00 (+2.08%) | |
| 2023 | $23,445.00 (+2.1%) | $1,892,178 Land $1,324,527 Building $567,651 |
| 2022 | $22,963.00 |
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 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.
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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