San Francisco City property record for 640 Post St, San Francisco, CA 94109
| Property Type | Apartments (5+ Units) |
|---|---|
| Details | 39 ba · 19,560 sqft · built 1912 |
| Lot Size | 0.001 acres (24 sqft) |
| Owner | Company Name on File |
| Tax Bill | $18,124 (2025) |
| Deeds & Mortgages | Feb 2023 Sale |
| APN | 0298-009 |
| Primary APN | 0298-009 |
|---|
| Full Baths | 39 Baths |
|---|---|
| Total Rooms | 86 Rooms |
| Units | 39 Units |
| Stories | 9 Stories |
| Building Area | 19,560 sqft Living Area |
| 1st Floor Area | 19,560 sqft |
| Year Built | Built 1912 |
|---|---|
| Effective Year Built | Effective 1912 |
| Construction Type | Concrete |
| Lot Area | 24 sqft (0.001 acres) |
| Street Address | 640 POST ST |
|---|---|
| City | SAN FRANCISCO |
| State | CA |
| Zip | 94109-8210 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Apartments (5+ Units) |
| Local Zoning Code | RC4 |
| Legal Description | MAP D6 6 |
| Legal Subdivision | 50 VARA BL 222 |
| Legal Block | 298 |
| Legal Lot Number | 9 |
| Jurisdiction | SAN FRANCISCO CA |
| Township / Civil Division | DOWNTOWN-NORTHEAST NEIGHBORHOODS-TREASURE ISLAND |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 12100 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Lower Nob Hill Apartment Hotel District listed 1991 · 296 contributing resources · NRIS 91000957 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
640 Post St, a residential property, is owned by a company that acquired it in January 1995.
Source: San Francisco City records, as of September 8, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 3505 ROLLING OAKS RD, SANTA ROSA, CA 95404-1409 |
| Owner Type | Company |
| Vesting | Limited Liability Company |
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 | Name on Deed |
|---|---|
| Last Transfer Date | Jan 17, 1995 |
| Transfer Doc | 0000743300 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN FRANCISCO CA |
| Recording Date | Feb 13, 2023 |
| Property Address | 640 POST ST, SAN FRANCISCO, CA 94109-8210 |
| Document Number | 0000010892 |
| Instrument Date | Feb 9, 2023 |
| Instrument | 2023010892 |
| Transaction Type | Transfer |
| Record Updated | Sep 12, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 3505 ROLLING OAKS RD, SANTA ROSA, CA 95404-1409 |
The 2025 property tax bill for 640 Post St was $18,124, up 0.5% 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 | $1,380,855 (+1.47%) Land $294,575 Building $1,054,602 | |
| 2025 | $18,124.00 (+0.54%) | $1,360,893 Land $288,778 Building $1,033,906 |
| 2024 | $18,027.00 (+4.53%) | |
| 2023 | $17,246.00 (+3.09%) | $1,281,535 Land $277,565 Building $1,003,970 |
| 2022 | $16,729.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA has no flood map on file for 640 Post 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 640 Post 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 903 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Verizon Fixed Wireless | 1,000 / 75 |
| Unwired Fixed Wireless | 300 / 25 |
| Etheric Networks Fixed Wireless · Fiber in parts of the area | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Astound Broadband, AT&T, GeoLinks, Google Fiber, Sail Internet, Sonic Telecom.
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