Office-building intelligence
Who owns an office building, what it's assessed at, and which companies the public record places inside — one page per building, one page per company. Built from government data only (assessment rolls, business-tax receipts, corporate registries), with the source cited on every fact.
At a glance
BuildingCensus's office census covers 34 US metros: 157,111 office buildings and 3.6B sq ft of recorded building area, every figure taken from a county assessment roll or another government record. 28 of the metros publish owner names, 27 publish sale prices and 13 publish a business registry that places companies inside buildings.
Metros
Coverage
Commercial-property records are published jurisdiction by jurisdiction, and no two publish the same things. Rather than average that away, each metro shows what its own public record supports — and a column that reads no is a gap in the record, not a gap we are hiding.
| Metro | Office buildings | Floor area | Owner | Sales | Tenants | Floor view |
|---|---|---|---|---|---|---|
| Atlanta / Fulton County | 4,743 | 152.1M sq ft | yes | yes | — | — |
| Baltimore | 1,102 | 5.3M sq ft | yes | yes | — | — |
| Boston | 1,046 | 70.4M sq ft | yes | yes | — | — |
| Chicago / Cook County | 9,438 | 347.4M sq ft | yes | yes | yes | — |
| Cincinnati / Hamilton County | 4,360 | — | yes | yes | — | — |
| Cleveland / Cuyahoga County | 2,908 | 79.1M sq ft | yes | yes | — | — |
| Columbus / Franklin County | 3,959 | — | yes | yes | — | — |
| Dallas / Dallas County | 8,823 | 282.1M sq ft | yes | — | yes | — |
| Denver | 2,022 | 104.6M sq ft | yes | yes | — | — |
| Detroit | 1,416 | 57.7M sq ft | yes | yes | — | — |
| Fort Lauderdale / Broward County | 6,702 | 75M sq ft | yes | yes | yes | — |
| Houston / Harris County | 11,116 | 304.2M sq ft | yes | — | yes | — |
| Jacksonville / Duval County | 5,389 | 62.8M sq ft | yes | yes | — | — |
| Los Angeles County | 19,626 | 377.4M sq ft | — | — | yes | yes |
| Miami-Dade County | 4,288 | 125.3M sq ft | yes | yes | yes | yes |
| Milwaukee | 408 | 14.7M sq ft | yes | yes | — | — |
| Minneapolis / Hennepin County | 669 | 84.7M sq ft | yes | yes | — | — |
| Nashville / Davidson County | 2,349 | — | yes | yes | — | — |
| New York City | 7,166 | 482.8M sq ft | yes | yes | — | — |
| Orlando / Orange County | 6,297 | 71.9M sq ft | yes | yes | — | — |
| Palm Beach County | 5,952 | 51.7M sq ft | yes | yes | yes | — |
| Philadelphia | 2,470 | 89.6M sq ft | yes | yes | yes | yes |
| Phoenix / Maricopa County | 9,306 | — | yes | yes | — | — |
| Pittsburgh / Allegheny County | 6,306 | 117K sq ft | — | yes | — | — |
| Portland / Multnomah County | 2,917 | 63M sq ft | yes | yes | — | — |
| Sacramento County | 4,303 | — | — | — | yes | yes |
| San Antonio / Bexar County | 3,834 | — | yes | — | — | — |
| San Diego County | 220 | 14.9M sq ft | — | — | yes | yes |
| San Francisco | 1,254 | 94.4M sq ft | — | — | yes | yes |
| Seattle / King County | 4,289 | 200.1M sq ft | — | yes | yes | yes |
| St. Louis City | 558 | 37M sq ft | yes | yes | — | — |
| St. Petersburg / Pinellas County | 4,682 | 40M sq ft | yes | yes | — | — |
| Tampa / Hillsborough County | 5,432 | 80.7M sq ft | yes | yes | — | — |
| Washington, DC | 1,761 | 212.1M sq ft | yes | yes | yes | yes |
| Indianapolis / Marion County · building | 542 | 40.4M sq ft | yes | — | — | — |
| Kansas City / Jackson County · building | — | — | yes | — | — | — |
Tenants and the floor-level view need a universal business registry — a roll where every business at an address appears, not just licensed trades. Landlord portfolios need owner mailing addresses. Each metro hub states which of these its own record supports.
Nationwide — federal lease inventory
What the government pays for office space
Rent is the one number American commercial real estate keeps private: landlords and brokers report it to subscription databases, not to the public. There is a single exception at national scale — the federal government is a tenant, and it publishes what it pays. These are median rents per rentable square foot on active federal office leases, by county, updated monthly.
| County | State | Leases | Median $/sq ft | Range (25th-75th) | Rentable sq ft |
|---|---|---|---|---|---|
| DISTRICT OF COLUMBIA | DC | 132 | $49.56 | $46-$52 | 13.7M |
| LOS ANGELES | CA | 108 | $42.49 | $36-$52 | 2.2M |
| SAN DIEGO | CA | 68 | $43.87 | $38-$48 | 1.4M |
| HARRIS | TX | 61 | $28.58 | $23-$35 | 1.5M |
| BEXAR | TX | 61 | $26.90 | $21-$31 | 1.2M |
| COOK | IL | 58 | $36.36 | $31-$43 | 1.9M |
| MARICOPA | AZ | 58 | $30.47 | $26-$36 | 1.7M |
| ARLINGTON | VA | 54 | $43.07 | $40-$45 | 5.1M |
| FAIRFAX | VA | 49 | $36.36 | $33-$39 | 3.7M |
| BROWARD | FL | 49 | $39.32 | $35-$43 | 966.7K |
| MIAMI-DADE | FL | 45 | $42.83 | $35-$53 | 1M |
| KING | WA | 45 | $42.02 | $34-$50 | 1.5M |
| DALLAS | TX | 44 | $31.22 | $24-$37 | 1.9M |
| DAVIDSON | TN | 42 | $30.47 | $24-$35 | 541.3K |
| HILLSBOROUGH | FL | 42 | $34.24 | $29-$37 | 1.1M |
| ORANGE | CA | 39 | $40.02 | $37-$45 | 896.7K |
| MONTGOMERY | MD | 39 | $31.33 | $29-$34 | 6.1M |
| PHILADELPHIA | PA | 38 | $30.54 | $28-$34 | 2.3M |
| ERIE | NY | 37 | $27.08 | $23-$34 | 1.1M |
| MULTNOMAH | OR | 36 | $39.01 | $31-$44 | 1M |
| EAST BATON ROUGE | LA | 36 | $27.33 | $25-$30 | 266.1K |
| BALTIMORE | MD | 34 | $25.26 | $23-$28 | 1.9M |
| FRANKLIN | OH | 34 | $29.91 | $23-$34 | 492.4K |
| WAYNE | MI | 34 | $31.79 | $24-$38 | 733.9K |
| CUYAHOGA | OH | 34 | $29.04 | $25-$37 | 697.9K |
Federal office leases and when they expire, by state →
Mostly-office leases only, five or more per county. One tenant is not a market. Federal space is often fitted for a specific agency and leased on government terms, and a fully serviced lease bundles utilities and services that a net rent excludes. It is a real, checkable floor under a market nobody else publishes — not a substitute for asking rents.
Which metros have the most office space on the public record?
By number of office buildings the largest metros on the record are Los Angeles (19,626), Houston (11,116) and Chicago (9,438).
By recorded floor area they are New York (482.8M sq ft), Los Angeles (377.4M sq ft) and Chicago (347.4M sq ft).
Counts are buildings rather than parcels: condo units that the roll lists separately are grouped under their building where the county links them.
Why does each metro show different facts?
Owner names are absent in Los Angeles, Pittsburgh, Sacramento, San Diego, San Francisco and Seattle, where the jurisdiction withholds them from bulk data; those pages show the parcel without an owner rather than guessing one.
Sale prices are absent in Dallas, Houston, Los Angeles, Sacramento, San Antonio, San Diego and San Francisco, where no bulk sale-price record is published (Texas is a non-disclosure state).
Floor-level views — which floors the public record places businesses on — exist in Los Angeles, Miami, Philadelphia, Sacramento, San Diego, San Francisco, Seattle and Washington, where business records carry suite numbers.
What does the federal government pay for office space?
Across the 25 counties with the most federal office leases, the median rent the government pays runs from $25.26 per rentable square foot in Baltimore, MD to $49.56 in District of Columbia, DC.
Frequently asked questions
Where can I find who owns an office building?
On each metro's office pages: the recorded owner comes from the county assessment roll in 28 of the 34 metros covered. Where a roll names a private individual, the name and mailing address are not published here.
Which metros does the office census cover?
Atlanta, Baltimore, Boston, Chicago, Cincinnati, Cleveland, Columbus, Dallas, Denver, Detroit, Fort Lauderdale, Houston, Jacksonville, Los Angeles, Miami, Milwaukee, Minneapolis, Nashville, New York, Orlando, Palm Beach, Philadelphia, Phoenix, Pittsburgh, Portland, Sacramento, San Antonio, San Diego, San Francisco, Seattle, St. Louis, St. Petersburg, Tampa and Washington.
Can I see which companies are in an office building?
In 13 metros — Chicago, Dallas, Fort Lauderdale, Houston, Los Angeles, Miami, Palm Beach, Philadelphia, Sacramento, San Diego, San Francisco, Seattle and Washington — business records are matched to office parcels, so building pages list the companies the public record places there, with source and match confidence.
What does office space rent for?
Asking rents are private. The public figure is what the federal government pays: median rent on active federal office leases ranges from $25.26 to $49.56 per square foot per year across the 25 counties with the most leases.
Data provenance — public records only
- U.S. General Services Administration — lease inventory — Active federal leases published monthly: annual rent actually paid, rentable square feet, effective and expiration dates, termination right, renewal options remaining and the lessor's name.
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.
About this data
Source: County assessment rolls and business registries in 34 metros (each metro hub lists its own), plus the U.S. General Services Administration — lease inventory, as published October 12, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Office census — every metro”, https://buildingcensus.com/offices (data as of October 12, 2026).