1621 N 34TH ST
Office · Seattle
At a glance
1621 N 34TH ST in Seattle, WA is listed on the Seattle / King County property roll as “Office”, parcel (major-minor) 4083306985. The roll records 336,268 sq ft of building area, 4 floors, a 2016 build year and an assessed value of $81,157,000. It last sold for $219,975,000 in Nov 2021. 3 active business locations at this address appear in public records.
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.
Recorded transfers — county roll + state sale file
Sale history
| Recorded | Price | Qualification | Source | Instrument |
|---|---|---|---|---|
| Nov 2021 | $219,975,000 | not rated | County roll | — |
| Aug 2017 | $157,825,000 | not rated | County roll | — |
Prices are the consideration recorded in Seattle / King County's public property records. Where a qualification code exists it is the assessor's judgement of whether a transfer was arm's length; transfers without one appear unrated rather than assumed clean. Whether a building is on the market today, and at what price, is not a public record and is not shown here — asking prices, listings and lease terms live in private commercial databases.
Public record — 3 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| TABLEAU FEDERAL INC | # 4 410 | Feb 2018 | Seattle business licence | address · medium |
| IMPARK 151 | — | Mar 2017 | Seattle business licence | address · medium |
| TABLEAU SOFTWARE INC | — | Oct 2004 | Seattle business licence | address · medium |
Seattle / King County assessment roll
Parcel record
| Field | Value |
|---|---|
| parcel (major-minor) | 4083306985 |
| Site address | 1621 N 34TH ST |
| Land use (DOR) | — Office |
| Building area (actual) | 336,268 sq ft |
| Floors / units / buildings | 4 / — / 1 |
| Lot size | — |
| Year built | 2016 |
| Zoning (primary) | — |
| Land value | $14,578,600 |
| Building value | — |
| Total assessed value | $81,157,000 |
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
- 1621 N 34TH ST
- City
- Seattle
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 1621 N 34TH ST compare with other Seattle office buildings?
At 336,268 sq ft, 1621 N 34TH ST is about 7 times the size of the average office building on the Seattle / King County roll, which comes to 46,649 sq ft across 4,289 buildings.
Its assessed value works out to $241 per square foot of building area, against $230 across all office floor area on the roll.
The last recorded sale priced it at $654 per square foot.
Does the owner of 1621 N 34TH ST hold other Seattle office property?
Seattle / King County's published roll does not include owner names, so no owner is shown for any parcel in this metro.
What has happened at 1621 N 34TH ST recently?
2 recorded transfers are on file for this parcel, the latest dated Nov 2021.
The building files energy-benchmarking disclosures — 1 report year are matched to this parcel.
What does “Office” mean for this parcel?
The Seattle / King County roll classifies parcel (major-minor) 4083306985 as “Office”. 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 1621 N 34TH ST?
Seattle / King County's published roll does not include owner names, so no owner is shown.
What companies have offices at 1621 N 34TH ST?
3 active business locations at this building appear in Seattle / King County public records, including TABLEAU FEDERAL INC, IMPARK 151, TABLEAU SOFTWARE INC. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 1621 N 34TH ST?
The Seattle / King County roll records 336,268 sq ft of building area, 4 floors, a build year of 2016.
What is the assessed value of 1621 N 34TH ST?
$81,157,000 on the Seattle / King County roll. Assessed values are taxable-roll figures, not market prices.
When did 1621 N 34TH ST last sell?
The last recorded transfer was in Nov 2021 for $219,975,000 ($654 per square foot).
What is the parcel (major-minor) for 1621 N 34TH ST?
Parcel (major-minor) 4083306985, site address 1621 N 34TH ST, Seattle. It is the key to look the parcel up in the King County Assessor bulk extracts and Seattle open data (Seattle / King County).
More around 1621 N 34TH ST
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Seattle / King County — 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.
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: Seattle / King County assessment roll, parcel (major-minor) 4083306985.
About this data
Source: King County Assessor bulk extracts and Seattle open data (Seattle / King County), as published September 20, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “1621 N 34TH ST, Seattle, WA (parcel (major-minor) 4083306985)”, https://buildingcensus.com/offices/seattle/office-building-2e84625b (data as of September 20, 2026).