555 MONTGOMERY ST
Commercial Office · San Francisco
At a glance
555 MONTGOMERY ST in San Francisco, CA is listed on the San Francisco property roll as “Commercial Office”, block/lot 0227048. The roll records 261,839 sq ft of building area, 20 floors, a 1985 build year and an assessed value of $156,172,668. 39 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 17-20 show no business on record — 4 unbroken floors, the longest such stretch here. Also quiet: 1-3, 9-10. That is where the public record shows nobody, in blocks — a place to start asking, not a listing.
- 20no record
- 19no record
- 18no record
- 17no record
- 162 on record
- 152 on record
- 143 on record
- 131 on record
- 128 on record
- 112 on record
- 10no record
- 9no record
- 84 on record
- 78 on record
- 63 on record
- 5no record
- 41 on record
- 3no record
- 2no record
- 1no 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 — 39 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| Cambio Ai Inc. | — | Aug 2026 | SF registered business | address · medium |
| Emissary Technologies Inc. | STE 708 | Mar 2026 | SF registered business | address · medium |
| Lnb Strategies | STE 720 | Oct 2025 | SF registered business | address · medium |
| Council On Technology & Society Dba Abundance Network Education | STE 720 | Sep 2025 | SF registered business | address · medium |
| Effective Government Dba Abundance Network | STE 720 | Sep 2025 | SF registered business | address · medium |
| Voltage Park, Inc. | STE 811 | Nov 2024 | SF registered business | address · medium |
| Planisware Usa, Inc. | STE 1300 | Nov 2024 | SF registered business | address · medium |
| American Water Works Service Company Inc | — | Aug 2024 | SF registered business | address · medium |
| Law Office Of John R. Braun | STE 1288 | Nov 2023 | SF registered business | address · medium |
| Emley Law Office Llp | STE 1288 | Nov 2023 | SF registered business | address · medium |
| Dubrovsky Law | STE 1288 | Nov 2023 | SF registered business | address · medium |
| Dubrovsky Emley LLC | STE 1288 | Nov 2023 | SF registered business | address · medium |
| Varo Bank N.A. | STE 1100 | Oct 2023 | SF registered business | address · medium |
| Varo Money, Inc | STE 1100 | Oct 2023 | SF registered business | address · medium |
| Peiffer Wolf Carr Kane Conway & Wise Aplc | STE 820 | Sep 2023 | SF registered business | address · medium |
| Jsq Securities Holdings, LLC | STE 1400 | Nov 2022 | SF registered business | address · medium |
| Boucher, Llp | STE 1205 | Sep 2022 | SF registered business | address · medium |
| Pearson Warshaw, Llp | STE 1205 | Aug 2022 | SF registered business | address · medium |
| Juniper Square, Inc. | STE 1400 | Jun 2022 | SF registered business | address · medium |
| Forge Global, Inc. | STE 1400 | Apr 2022 | SF registered business | address · medium |
| Hero Digital LLC | STE 1250 | Sep 2021 | SF registered business | address · medium |
| Law Office Gerald Clausen | STE 605 | Jan 2020 | SF registered business | address · medium |
| Kwun Bhansali Lazarus Llp | STE 750 | May 2018 | SF registered business | address · medium |
| Ray V Mizrachi Insurance Agency Inc | STE 650 | May 2018 | SF registered business | address · medium |
| Dba Farmers Insurance | STE 650 | May 2018 | SF registered business | address · medium |
| Mark S. Bridges, Attorney At Law | — | Jan 2018 | SF registered business | address · medium |
| Miyamoto International, Inc. | STE 803 | Jan 2017 | SF registered business | address · medium |
| Travisa Visa Service | 700 | Sep 2016 | SF registered business | address · medium |
| Fragomen Del Rey Bernsen & Loe | FL 4 | Jan 2015 | SF registered business | address · medium |
| Montgomery Pacific Law Grp Llp | STE 1650 | Jan 2014 | SF registered business | address · medium |
| Express Visa Services Inc | STE 700 | Oct 2011 | SF registered business | address · medium |
| Zierer Visa Service | STE 700 | Oct 2011 | SF registered business | address · medium |
| Softagon | STE 1210 | Jun 2011 | SF registered business | address · medium |
| East West Bank | — | Nov 2009 | SF registered business | address · medium |
| Major Hagen Africa No Cal LLC | STE 1500 | Dec 2008 | SF registered business | address · medium |
| Major Lindsey Africa No Cal Ll | STE 1500 | Dec 2008 | SF registered business | address · medium |
| Cibt | STE 700 | Jan 2006 | SF registered business | address · medium |
| Cadd Resources LLC | STE 850 | Jan 2000 | SF registered business | address · medium |
| Guardian Life Insur Co Of Amer | STE 1600 | Jan 1965 | SF registered business | address · medium |
San Francisco assessment roll
Parcel record
| Field | Value |
|---|---|
| block/lot | 0227048 |
| Site address | 555 MONTGOMERY ST |
| Land use (DOR) | COMO — Commercial Office |
| Building area (actual) | 261,839 sq ft |
| Floors / units / buildings | 20 / — / — |
| Lot size | 16,431 sq ft |
| Year built | 1985 |
| Zoning (primary) | — |
| Land value | $62,469,067 |
| Building value | — |
| Total assessed value | $156,172,668 |
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
- 555 MONTGOMERY ST
- City
- San Francisco
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 555 MONTGOMERY ST compare with other San Francisco office buildings?
At 261,839 sq ft, 555 MONTGOMERY ST is about 3 times the size of the average office building on the San Francisco roll, which comes to 75,252 sq ft across 1,254 buildings.
With 20 floors it is one of 199 office buildings of ten or more floors in the metro.
Its assessed value works out to $596 per square foot of building area, against $576 across all office floor area on the roll.
Does the owner of 555 MONTGOMERY 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 555 MONTGOMERY 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 0227048 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 555 MONTGOMERY ST?
San Francisco's published roll does not include owner names, so no owner is shown.
What companies have offices at 555 MONTGOMERY ST?
39 active business locations at this building appear in San Francisco public records, including Cambio Ai Inc., Emissary Technologies Inc., Lnb Strategies, Council On Technology & Society Dba Abundance Network Education, Effective Government Dba Abundance Network. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 555 MONTGOMERY ST?
The San Francisco roll records 261,839 sq ft of building area, 20 floors, a build year of 1985. It sits on a 16,431 sq ft lot.
What is the assessed value of 555 MONTGOMERY ST?
$156,172,668 on the San Francisco roll. Assessed values are taxable-roll figures, not market prices.
What is the block/lot for 555 MONTGOMERY ST?
Block/lot 0227048, site address 555 MONTGOMERY ST, San Francisco. It is the key to look the parcel up in the Assessor secured roll (San Francisco).
More around 555 MONTGOMERY 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 0227048.
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, “555 MONTGOMERY ST, San Francisco, CA (block/lot 0227048)”, https://buildingcensus.com/offices/sf/office-building-630e61e4 (data as of September 20, 2026).