Seattle / King County office buildings — the public record
Every office-class parcel in Seattle / King County — who owns it and what the assessor values it at, what it last sold for and which businesses the public record places inside. Built exclusively from government data: King County Assessor bulk extracts and Seattle open data. Washington law restricts commercial use of lists of individuals, so this metro is built without personal names by design: the county's name-stripped account file provides mailing addresses (portfolios group by mailing cluster, unnamed), sales show price and date but never buyer or seller, and tenants are business licence trade names. No listing sites, no scraping — every page cites its sources.
🔒 Create a free account to export CSV · every Seattle office parcel: owner, use code, floors, area, assessed value
Derived from county business-tax suite numbers
Buildings with a floor-by-floor view
Business-tax receipts carry suite numbers, and in a tower the suite prefix is the floor. Where enough of them agree with the county roll, the building page shows which floors the public record places businesses on. It is an occupancy signal, not a vacancy report.
| Building | Floors with activity | Receipts read |
|---|---|---|
| Two Union Square | 42 of 56 | 126 |
| 1201 3RD AVE | 27 of 55 | 82 |
| 600 UNIVERSITY ST | 26 of 36 | 84 |
| US Bank Centre | 21 of 46 | 98 |
| 999 3RD AVE | 19 of 47 | 53 |
| 2101 4TH AVE | 19 of 24 | 50 |
| 1000 2ND AVE | 18 of 41 | 52 |
| 520 PIKE ST | 14 of 29 | 35 |
| 2001 6TH AVE | 14 of 33 | 29 |
| 1111 3RD AVE | 14 of 34 | 28 |
| 901 5TH AVE | 14 of 41 | 17 |
| 1700 7TH AVE | 13 of 23 | 90 |
| 800 5TH AVE | 13 of 42 | 64 |
| Safeco Plaza | 13 of 37 | 30 |
| 600 STEWART ST | 12 of 20 | 55 |
| 1325 4TH AVE | 12 of 21 | 34 |
| 720 OLIVE WAY | 12 of 20 | 22 |
| 901 BOREN AVE | 11 of 19 | 37 |
| 801 2ND AVE | 11 of 17 | 31 |
| 1201 2ND AVE | 11 of 38 | 25 |
| 1218 3RD AVE | 11 of 27 | 14 |
| 705 2ND AVE | 10 of 17 | 28 |
| 1001 4TH AVE | 10 of 49 | 27 |
| 2033 6TH AVE | 9 of 11 | 57 |
Most locations on record
Companies across Seattle offices
The skyline, by the county roll
Notable office buildings
| Building | Submarket | Floors | Sq ft | Built | Assessed | Recorded owner | Tenants |
|---|---|---|---|---|---|---|---|
| 3009 157TH PL NE | Seattle | 5 | 4.4M | 2021 | $900.4M | — | 0 |
| 411 COLUMBIA ST | Seattle | 76 | 2M | 1985 | $377.5M | — | 0 |
| 633 110TH AVE NE | Seattle | 43 | 1.7M | 2024 | $264.5M | — | 0 |
| Two Union Square | Seattle | 56 | 1.6M | 1989 | $366M | — | 136 |
| 2100 7TH AVE | Seattle | 39 | 1.6M | 2019 | $2.9M | — | 0 |
| US Bank Centre | Seattle | 46 | 1.5M | 1989 | $251.2M | — | 117 |
| 2101 7TH AVE | Seattle | 37 | 1.5M | 2016 | $254.5M | — | 2 |
| 2401 UTAH AVE S | Seattle | 9 | 1.5M | 1916 | $186.4M | — | 16 |
| Amazon Doppler | Seattle | 36 | 1.5M | 2015 | $216.6M | — | 5 |
| 555 108TH AVE NE | Seattle | 42 | 1.5M | 2021 | $398.6M | — | 0 |
| 1201 3RD AVE | Seattle | 55 | 1.4M | 1988 | $286M | — | 92 |
| 999 3RD AVE | Seattle | 47 | 1.3M | 1983 | $225M | — | 62 |
| 1001 106TH AVE NE | Seattle | 15 | 1.3M | 2020 | $355.9M | — | 0 |
| 2200 7TH AVE | Seattle | 24 | 1.3M | 2019 | $183.3M | — | 1 |
| 800 5TH AVE | Seattle | 42 | 1.2M | 1981 | $206.1M | — | 72 |
| 1045 LAKE DR | Seattle | 9 | 1.2M | 2001 | $213.3M | — | 0 |
| 1001 4TH AVE | Seattle | 49 | 1.2M | 1969 | $187.7M | — | 40 |
| 355 110TH AVE NE | Seattle | 13 | 1.2M | 2002 | $237.6M | — | 0 |
| 555 110TH AVE NE | Seattle | 26 | 1.1M | 2007 | $160.8M | — | 0 |
| 1111 EXPEDIA GROUP WAY W | Seattle | 4 | 1.1M | 2019 | $285.3M | — | 12 |
| Safeco Plaza | Seattle | 37 | 1.1M | 2002 | $211.5M | — | 38 |
| 505 MADISON ST | Seattle | 36 | 990K | 2017 | $243.2M | — | 0 |
| 1110 112TH AVE NE | Seattle | 6 | 988.1K | 2001 | $191.7M | — | 0 |
| 333 DEXTER AVE N | Seattle | 12 | 957.6K | 2018 | $226.6M | — | 3 |
| 788 106TH AVE NE | Seattle | 25 | 915.1K | 2023 | $161.8M | — | 0 |
| 1201 2ND AVE | Seattle | 38 | 899.1K | 2018 | $232.3M | — | 32 |
| 1918 8TH AVE | Seattle | 36 | 876.1K | 2009 | $185.3M | — | 2 |
| 915 2ND AVE | Seattle | 36 | 861.2K | 1973 | — | — | 2 |
| 10770 NE 8TH ST | Seattle | 25 | 817.6K | 2023 | $220.5M | — | 0 |
| 1600 7TH AVE | Seattle | 33 | 803K | 1976 | $160.9M | — | 5 |
| 600 UNIVERSITY ST | Seattle | 36 | 796.5K | 1980 | $176.5M | — | 97 |
| 4480 154TH PL NE | Seattle | 4 | 793.3K | 2015 | $111.6M | — | 0 |
| 929 108TH AVE NE | Seattle | 19 | 786.4K | 2015 | $211.2M | — | 0 |
| 333 108TH AVE NE | Seattle | 18 | 781.3K | 2007 | $212.7M | — | 0 |
| 901 5TH AVE | Seattle | 41 | 777.3K | 1973 | $132.3M | — | 21 |
| 1111 3RD AVE | Seattle | 34 | 776.8K | 1980 | $137.9M | — | 34 |
| 601 108TH AVE NE | Seattle | 21 | 773.4K | 2000 | $172.1M | — | 0 |
| 350 106TH AVE NE | Seattle | 21 | 770.1K | 2024 | $141.6M | — | 0 |
| 1501 4TH AVE | Seattle | 30 | 755K | 1985 | $114M | — | 26 |
| 2001 8TH AVE | Seattle | 28 | 754K | 2009 | $122.7M | — | 10 |
Building names are editorial labels for well-known towers; all facts are the county's. Assessed values are the taxable-roll figures — not market prices.
Owner entities grouped by mailing address
Largest office landlords
| Owner | Mailing address | Properties | Floor area | Assessed | Tenants |
|---|---|---|---|---|---|
| Owner on file | SCOTTSDALE, AZ | 29 | 12M sq ft | $3.6B | 0 |
| Owner on file | SEATTLE, WA | 11 | 8.8M sq ft | $1.6B | 24 |
| AL SOUTH BOSTON OWNER 1 LLC · 7 entities | CARLSBAD, CA | 33 | 6.2M sq ft | $1.9B | 13 |
| B9 FAULKNER OWNER LLC · 7 entities | CHICAGO, IL | 12 | 11.4M sq ft | $2.5B | 332 |
| Owner on file | LOS ANGELES, CA | 9 | 3.6M sq ft | $710.3M | 34 |
| Owner on file | SEATTLE, WA | 2 | 2.4M sq ft | $542.5M | 233 |
| Owner on file | TACOMA, WA | 4 | 2.3M sq ft | — | 2 |
| Owner on file | TAMPA, FL | 14 | 2.2M sq ft | $1B | 4 |
| Owner on file | SAN FRANCISCO, CA | 2 | 2.2M sq ft | $430.9M | 40 |
| Owner on file | LOS ANGELES, CA | 2 | 2.2M sq ft | $413M | 17 |
| Owner on file | SEATTLE, WA | 7 | 2M sq ft | $269.5M | 108 |
| Owner on file | SEATTLE, WA | 5 | 1.7M sq ft | $333.4M | 12 |
| Owner on file | SEATTLE, WA | 11 | 1.7M sq ft | — | 47 |
| Owner on file | SEATTLE, WA | 3 | 1.6M sq ft | $305.9M | 11 |
| Owner on file | BELLEVUE, WA | 10 | 1.5M sq ft | $241.9M | 5 |
| HTA-AW FL MEDICAL CENTER EAST · 4 entities | NASHVILLE, TN | 20 | 1.5M sq ft | $306.3M | 31 |
Commercial property is usually held one building per entity, so the roll shows many owners where there is one sponsor. Grouping owner entities by the mailing address the county sends the tax bill to is what reveals the holding — evidence of common ownership, not proof of it, since a shared mailbox can also be a law firm, an accountant or a tax servicer. Each page says which case it looks like. Counted by building, not parcel.
Federal lease inventory — actual rent paid
The one rent figure that is public
Across 45 active federal office leases in Miami-Dade, the median rent is $42.02 per rentable square foot per year, with the middle half between $34 and $50. Asking rents are proprietary; the federal government publishes what it actually pays, lease by lease, and those leases appear on the building pages they belong to. One tenant is not a market — federal space is often agency-fitted and leased on government terms.
Every federal office lease in Florida, and when it expires →
Whole-building transfers over $1M
Recently sold office buildings
| Building | Submarket | Sold | Price | $/sq ft | Sq ft |
|---|---|---|---|---|---|
| 11800 NE 128TH ST | Seattle | Sep 2026 | $69,868,000 | $701 | 99.7K |
| 19930 BALLINGER WAY NE | Seattle | Sep 2026 | $5,950,000 | $390 | 15.3K |
| 16030 JUANITA-WOODINVILLE WAY NE | Seattle | Aug 2026 | $3,000,000 | $395 | 7.6K |
| 22510 SE 64TH PL | Seattle | Aug 2026 | $4,888,000 | $544 | 9K |
| 10767 16TH AVE SW | Seattle | Aug 2026 | $1,155,000 | $390 | 3K |
| 14205 SE 36TH ST | Seattle | Jul 2026 | $13,885,888 | $195 | 71K |
| 2333 WESTERN AVE | Seattle | Jul 2026 | $5,495,000 | $369 | 14.9K |
| 4241 21ST AVE W | Seattle | Jul 2026 | $1,850,000 | $83 | 22.4K |
| 10900 SE 176TH ST | Seattle | Jul 2026 | $3,650,000 | $349 | 10.5K |
| 33427 PACIFIC HWY S | Seattle | Jul 2026 | $1,750,000 | $186 | 9.4K |
| 8811 ROOSEVELT WAY NE | Seattle | Jul 2026 | $1,160,000 | $600 | 1.9K |
| 620 KIRKLAND WAY | Seattle | Jul 2026 | $15,750,000 | $464 | 34K |
| 30 SE BUSH ST | Seattle | Jul 2026 | $1,100,000 | $451 | 2.4K |
| 3625 WOODLAND PARK AVE N | Seattle | Jun 2026 | $2,200,000 | $463 | 4.8K |
| 4530 12TH AVE NE | Seattle | Jun 2026 | $78,401,103 | $238 | 328.9K |
| 801 2ND AVE | Seattle | Jun 2026 | $80,662,337 | $243 | 331.7K |
| 112 SW 157TH ST | Seattle | Jun 2026 | $1,160,000 | $330 | 3.5K |
| 1055 NW MAPLE ST | Seattle | Jun 2026 | $12,975,000 | $609 | 21.3K |
| 10834 SE KENT-KANGLEY RD | Seattle | Jun 2026 | $1,000,000 | $334 | 3K |
| 10516 S RIVERSIDE DR | Seattle | Jun 2026 | $1,150,000 | $462 | 2.5K |
Countywide
Office stock by city
| City | Office buildings | Floor area | Assessed | Active tenants |
|---|
Data provenance — public records only
- Miami-Dade County Property Appraiser — assessment roll — Parcel identity, site address, recorded owner, use code, areas, year built and assessed values, via the county's public GIS services (MD_LandInformation, PaGis layer).
- Miami-Dade County Local Business Tax roll — Business-tax receipts: business name, premises address (incl. suite/floor), account status and start date, via the county's public GIS services.
- Florida Division of Corporations (Sunbiz) — corporate data file — Registered entities: document number, status, filing date, registered agent and principal address, from the state's public quarterly data file.
- Miami-Dade County Property Appraiser — recorded sale — The last recorded transfer price and date for the parcel, from the county's public property point view.
- Florida Department of Revenue — Sale Data File — Every transfer in the current roll period with the property appraiser's sale qualification code, vacant/improved code, multi-parcel flag and the clerk's recording reference.
- 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.
Dataset updated . Seattle / King County is one metro of the office-intelligence census; each additional one is a data binding to another jurisdiction's records, not a new build.