450 SANSOME ST
Commercial Office · San Francisco
At a glance
450 SANSOME ST in San Francisco, CA is listed on the San Francisco property roll as “Commercial Office”, block/lot 0229018. The roll records 135,000 sq ft of building area, 16 floors, a 1967 build year and an assessed value of $101,266,819. 20 active business locations at this address appear in public records.
Derived from suite and floor strings in the occupancy records
Which floors show activity
Floors 3-4 show no business on record — 2 unbroken floors, the longest such stretch here. Also quiet: 12-13. That is where the public record shows nobody, in blocks — a place to start asking, not a listing.
- 161 on record
- 151 on record
- 141 on record
- 13no record
- 12no record
- 114 on record
- 102 on record
- 93 on record
- 81 on record
- 71 on record
- 61 on record
- 51 on record
- 4no record
- 3no record
- 21 on record
- 11 on record
Floors are read from suite numbers on San Francisco business records (suite 4900 → floor 49). A floor with no record is not necessarily vacant — it may be mechanical, occupied by the owner, or let to a business whose receipt carries no suite. Receipts also lag reality by months. This shows where the public record places businesses, not a rent roll or an availability report. A stretch of quiet floors is not contiguous space for rent — it is contiguous silence in the record, which is the closest thing the public record has to that question and worth exactly what it costs to check.
The building's own benchmarking filing
Energy performance
From the building's own filing under its city's benchmarking ordinance. An ENERGY STAR score of 75 or above means the building outperforms three quarters of comparable buildings nationally. It is a self-reported figure, verified by the city only to the extent the ordinance requires.
Public record — 20 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| Gs Construction California, LLC. | STE 500 | Jul 2026 | SF registered business | address · medium |
| Sansome Clay | — | Jan 2026 | SF registered business | address · medium |
| Delah Coffee | UNIT 1 | May 2024 | SF registered business | address · medium |
| Direct Travel | STE 1100 | Nov 2023 | SF registered business | address · medium |
| Direct Travel, Inc. | STE 1100 | Nov 2023 | SF registered business | address · medium |
| Evelyn & Walter Haas Jr Fund | FL 16 | Sep 2022 | SF registered business | address · medium |
| Sauce Labs Inc | STE 900 | Aug 2022 | SF registered business | address · medium |
| Peak Travel Group, Inc. | STE 1100 | Jan 2022 | SF registered business | address · medium |
| Naturgy Renewables Usa Corp | STE 1101 | Aug 2021 | SF registered business | address · medium |
| Impact Community Capital LLC | STE 1000 | Aug 2020 | SF registered business | address · medium |
| Law Office Of Rosy Cho | STE 1005 | Mar 2019 | SF registered business | address · medium |
| Cooper Software, Inc. | FL 9 | Jan 2017 | SF registered business | address · medium |
| 450 Sansome LLC | — | Aug 2015 | SF registered business | address · medium |
| Worldpay | FL 14 | May 2013 | SF registered business | address · medium |
| Mintz Group | STE 700 | Mar 2013 | SF registered business | address · medium |
| Philadelphia Fnc Mgmnt Of SF | STE 1500 | Feb 2011 | SF registered business | address · medium |
| Linkedin Corporation | STE 650 | Oct 2010 | SF registered business | address · medium |
| Focus Pointe Global | FL 8 | May 2005 | SF registered business | address · medium |
| Edi Architecture Inc | STE 2 | Apr 2005 | SF registered business | address · medium |
| Harris Williams LLC | FL 9 | Jan 2001 | SF registered business | address · medium |
San Francisco assessment roll
Parcel record
| Field | Value |
|---|---|
| block/lot | 0229018 |
| Site address | 450 SANSOME ST |
| Land use (DOR) | COMO — Commercial Office |
| Building area (actual) | 135,000 sq ft |
| Floors / units / buildings | 16 / — / — |
| Lot size | 10,537 sq ft |
| Year built | 1967 |
| Zoning (primary) | — |
| Land value | $60,760,092 |
| Building value | — |
| Total assessed value | $101,266,819 |
Recorded owner (assessment roll)
No owning organisation shown. Where the county roll names a private individual, the name and mailing address are not published here.
Location
- Address
- 450 SANSOME ST
- City
- San Francisco
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 450 SANSOME ST compare with other San Francisco office buildings?
At 135,000 sq ft, 450 SANSOME ST is about 79% larger than the average office building on the San Francisco roll, which comes to 75,252 sq ft across 1,254 buildings.
With 16 floors it is one of 199 office buildings of ten or more floors in the metro.
Its assessed value works out to $750 per square foot of building area, against $576 across all office floor area on the roll.
Does the owner of 450 SANSOME ST hold other San Francisco office property?
San Francisco's published roll does not include owner names, so no owner is shown for any parcel in this metro.
What has happened at 450 SANSOME ST recently?
The building files energy-benchmarking disclosures — 1 report year are matched to this parcel.
What does “Commercial Office” mean for this parcel?
The San Francisco roll classifies block/lot 0229018 as “Commercial Office” (use code COMO). BuildingCensus includes a parcel in its office census when the roll gives it an office-class use, so the label is the county's, not an inference.
Frequently asked questions
Who owns 450 SANSOME ST?
San Francisco's published roll does not include owner names, so no owner is shown.
What companies have offices at 450 SANSOME ST?
20 active business locations at this building appear in San Francisco public records, including Gs Construction California, LLC., Sansome Clay, Delah Coffee, Direct Travel, Direct Travel, Inc.. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 450 SANSOME ST?
The San Francisco roll records 135,000 sq ft of building area, 16 floors, a build year of 1967. It sits on a 10,537 sq ft lot.
What is the assessed value of 450 SANSOME ST?
$101,266,819 on the San Francisco roll. Assessed values are taxable-roll figures, not market prices.
What is the block/lot for 450 SANSOME ST?
Block/lot 0229018, site address 450 SANSOME ST, San Francisco. It is the key to look the parcel up in the Assessor secured roll (San Francisco).
More around 450 SANSOME ST
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- San Francisco — Assessor secured roll (use classes, stories, areas, assessed values — California law excludes owner names from open data, and no bulk sale-price source exists), the universal registered-business roll with suite-level addresses, and current energy benchmarking joined by parcel.
Every fact on this page is drawn from the government records above — no listing sites, no scraped platforms, no third-party images. Facts from public records are uncopyrightable; each tenancy row carries its source and match confidence. Records can lag reality — a business-tax receipt or registration at an address is evidence of occupancy, not a lease confirmation.
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Dataset updated . Source: San Francisco assessment roll, block/lot 0229018.
About this data
Source: Assessor secured roll (San Francisco), as published September 20, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “450 SANSOME ST, San Francisco, CA (block/lot 0229018)”, https://buildingcensus.com/offices/sf/office-building-52d28d67 (data as of September 20, 2026).