660 MARKET ST
Commercial Office · San Francisco
At a glance
660 MARKET ST in San Francisco, CA is listed on the San Francisco property roll as “Commercial Office”, block/lot 0311005. The roll records 42,104 sq ft of building area, 5 floors, a 1924 build year and an assessed value of $43,316,962. 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
- 51 on record
- 41 on record
- 32 on record
- 232 on 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 |
|---|---|---|---|---|
| Dark Matter Salon | STE 205 | Jul 2026 | SF registered business | address · medium |
| Skin Beauty San Francisco | STE 226 | May 2026 | SF registered business | address · medium |
| Skin Beauty SF | STE 226 | May 2026 | SF registered business | address · medium |
| Surf Nails | STE 201 | May 2026 | SF registered business | address · medium |
| Pat Paul LLC | STE 218 | Apr 2026 | SF registered business | address · medium |
| Triumnika | UNIT 219 | Feb 2026 | SF registered business | address · medium |
| Primavera Skin Beauty Studio | STE 226 | Jan 2026 | SF registered business | address · medium |
| Primavera Skin Care Clinic | STE 226 | Dec 2025 | SF registered business | address · medium |
| Primavera Renewal Touch | STE 226 | Dec 2025 | SF registered business | address · medium |
| Eman Style SF | STE 207 | Dec 2025 | SF registered business | address · medium |
| Inhala Skin | STE 208 | Sep 2025 | SF registered business | address · medium |
| Montra Thai Massage & Wellness | STE 221 | Aug 2025 | SF registered business | address · medium |
| Workos | FL 3 | Aug 2025 | SF registered business | address · medium |
| Relaxation Hq | STE 217 | Jul 2025 | SF registered business | address · medium |
| Danny's Hair Studio SF | STE 213 | Feb 2025 | SF registered business | address · medium |
| Rebecca Wraxall Hair | STE 202 | Jan 2025 | SF registered business | address · medium |
| 660 Market St #215 San Francisco Ca 94104 | STE 215 | Sep 2024 | SF registered business | address · medium |
| 660 Market Street LLC | — | Jun 2024 | SF registered business | address · medium |
| Getitdone | STE 201 | Apr 2024 | SF registered business | address · medium |
| Braids SF | STE 201 | Apr 2024 | SF registered business | address · medium |
| Sf Braids Parlor | STE 201 | Apr 2024 | SF registered business | address · medium |
| Body Beautiful By Dr. J | STE 214 | Aug 2023 | SF registered business | address · medium |
| Ce Belleza, LLC | STE 218 | Aug 2023 | SF registered business | address · medium |
| Parallel Hair LLC | STE 222 | Mar 2023 | SF registered business | address · medium |
| J Co Salon | STE 213 | Jan 2023 | SF registered business | address · medium |
| Cheyenne-Psyche-Studio | STE 206 | Nov 2022 | SF registered business | address · medium |
| Peter Van De Velde | STE 224 | Feb 2022 | SF registered business | address · medium |
| Boku Inc | FL 4 | Aug 2021 | SF registered business | address · medium |
| Sola Salon Studios | FL SECON | May 2021 | SF registered business | address · medium |
| Makers Make Parlor | STE 222 | Feb 2021 | SF registered business | address · medium |
| Mandeepstylist | STE 214 | Nov 2020 | SF registered business | address · medium |
| Perry Littrell Colorist/Stylist | STE 204 | Jun 2020 | SF registered business | address · medium |
| Coiffeur Corner | STE 216 | Apr 2020 | SF registered business | address · medium |
| Adriana Estrada | STE 202 | Feb 2020 | SF registered business | address · medium |
| Lacquer And Lashes | STE 217 | Jul 2018 | SF registered business | address · medium |
| Culture Amp | FL 5 | Aug 2017 | SF registered business | address · medium |
| Kyle Holbrook | STE 223 | Feb 2017 | SF registered business | address · medium |
| Wax Addict | 212 | Dec 2014 | SF registered business | address · medium |
| Mithun / Solomon | STE 300 | Oct 2012 | SF registered business | address · medium |
San Francisco assessment roll
Parcel record
| Field | Value |
|---|---|
| block/lot | 0311005 |
| Site address | 660 MARKET ST |
| Land use (DOR) | COMO — Commercial Office |
| Building area (actual) | 42,104 sq ft |
| Floors / units / buildings | 5 / 8 / — |
| Lot size | 12,797 sq ft |
| Year built | 1924 |
| Zoning (primary) | — |
| Land value | $30,321,874 |
| Building value | — |
| Total assessed value | $43,316,962 |
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
- 660 MARKET ST
- City
- San Francisco
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 660 MARKET ST compare with other San Francisco office buildings?
At 42,104 sq ft, 660 MARKET ST is about 44% smaller than the average office building on the San Francisco roll, which comes to 75,252 sq ft across 1,254 buildings.
Its assessed value works out to $1029 per square foot of building area, against $576 across all office floor area on the roll.
Does the owner of 660 MARKET 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 660 MARKET 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 0311005 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 660 MARKET ST?
San Francisco's published roll does not include owner names, so no owner is shown.
What companies have offices at 660 MARKET ST?
39 active business locations at this building appear in San Francisco public records, including Dark Matter Salon, Skin Beauty San Francisco, Skin Beauty SF, Surf Nails, Pat Paul LLC. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 660 MARKET ST?
The San Francisco roll records 42,104 sq ft of building area, 5 floors, a build year of 1924. It sits on a 12,797 sq ft lot.
What is the assessed value of 660 MARKET ST?
$43,316,962 on the San Francisco roll. Assessed values are taxable-roll figures, not market prices.
What is the block/lot for 660 MARKET ST?
Block/lot 0311005, site address 660 MARKET ST, San Francisco. It is the key to look the parcel up in the Assessor secured roll (San Francisco).
More around 660 MARKET 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 0311005.
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, “660 MARKET ST, San Francisco, CA (block/lot 0311005)”, https://buildingcensus.com/offices/sf/office-building-8a4c7e9e (data as of September 20, 2026).