BuildingCensus

300 CLAY ST

Commercial Office · San Francisco

Active records here
17
business-tax + registry entities
Building area
615,957
sq ft (county roll)
Floors
25
county roll
Year built
1967
vintage
Assessed value
$435.8M
current roll
Assessed / sq ft
$707
assessed value per sq ft
Last sold
—
no transfer on record
Sale / sq ft
—
not derivable from the record

Derived from suite and floor strings in the occupancy records

Which floors show activity

10 of 25 floors show activityfrom 11 suite-numbered receipts

Floors 16-25 show no business on record — 10 unbroken floors, the longest such stretch here. Also quiet: 5-9. That is where the public record shows nobody, in blocks — a place to start asking, not a listing.

  1. 25no record
  2. 24no record
  3. 23no record
  4. 22no record
  5. 21no record
  6. 20no record
  7. 19no record
  8. 18no record
  9. 17no record
  10. 16no record
  11. 151 on record
  12. 141 on record
  13. 131 on record
  14. 121 on record
  15. 112 on record
  16. 101 on record
  17. 9no record
  18. 8no record
  19. 7no record
  20. 6no record
  21. 5no record
  22. 41 on record
  23. 31 on record
  24. 21 on record
  25. 11 on record

Floors are read from suite numbers on Miami-Dade business-tax receipts (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

ENERGY STAR score
75
top quartile nationally
Site energy use
—
kBtu per sq ft per year
Reported emissions
—
tonnes CO₂e
Disclosed area
635,536
sq ft, 2025 filing

From the building's own filing under the City of Miami'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 — 17 matched business locations

Tenants & business locations

CompanySuite / floorSinceSourceMatch
Ba @ Google Mk 10e6FL 10May 2026sf_regaddress · medium
Ba @ Google Hub 11d0FL 11May 2026sf_regaddress · medium
Ba @ Google Flora 13d2FL 13May 2026sf_regaddress · medium
Ba @ Google Mk 11d2FL 11May 2026sf_regaddress · medium
Ba @ Google Urban Cowboy Coffee Bar 2k0FL 2May 2026sf_regaddress · medium
Ba @ Google Mk Hub 15d7FL 15May 2026sf_regaddress · medium
Ba @ Google Coffee Corner 14b2FL 14May 2026sf_regaddress · medium
Ba @ Google Mk 4k1FL 4May 2026sf_regaddress · medium
Ba @ Google Mk 3j0FL 3May 2026sf_regaddress · medium
Ba @ Google Mk 12e0FL 12May 2026sf_regaddress · medium
THE BURSON GROUP, LLCvia The Burson Group LLC—Jan 2025sf_regaddress · medium
Centerharbor Canapi Ventures Investment Advisor Llp# STE167Oct 2024sf_regaddress · medium
Groupm—May 2024sf_regaddress · medium
Bar Sprezzatura# 100Sep 2022sf_regaddress · medium
300 Clay Street—Apr 2021sf_regaddress · medium
Andy For Hair—Jan 2015sf_regaddress · medium
Ppf Off One Maritime Plz Lp—Apr 2007sf_regaddress · medium

San Francisco assessment roll

Parcel record

FieldValue
block/lot0204021
Site address300 CLAY ST
Land use (DOR)COMO — Commercial Office
Building area (actual)615,957 sq ft
Floors / units / buildings25 / — / —
Lot size27,611 sq ft
Year built1967
Zoning (primary)—
Land value$138,821,257
Building value—
Total assessed value$435,772,502

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
300 CLAY ST
City
San Francisco

Within ~650 m

Nearby office buildings

No other office parcels within ~650 m.

Frequently asked questions

Who owns 300 CLAY ST?

No owning organisation is shown for this parcel. Where the county roll names a private individual as owner, BuildingCensus does not publish the name or mailing address.

What companies have offices at 300 CLAY ST?

17 active business locations at this building appear in San Francisco public records, including Ba @ Google Mk 10e6, Ba @ Google Hub 11d0, Ba @ Google Flora 13d2, Ba @ Google Mk 11d2, Ba @ Google Urban Cowboy Coffee Bar 2k0. Public records under-count tenants that don't hold a local receipt or register the address.

How big is 300 CLAY ST?

The county assessment roll records 615,957 sq ft of building area across 25 floors, built in 1967, on a 27,611 sq ft lot, with a current assessed value of $435,772,502.

Everything here comes from public records, and public records go stale. If you know better, say so.

Data provenance — public records only

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 0204021.