421 SW 5TH AVE
Office High Rise · Portland · 97204
At a glance
421 SW 5TH AVE in Portland, OR is listed on the Portland / Multnomah County property roll as “Office High Rise”, state ID 1N1E34CC4100. The roll records 65,824 sq ft of building area, 7 floors, a 1912 build year.
Portland / Multnomah County assessment roll
Parcel record
| Field | Value |
|---|---|
| state ID | 1N1E34CC4100 |
| Site address | 421 SW 5TH AVE |
| Land use (DOR) | — Office High Rise |
| Building area (actual) | 65,824 sq ft |
| Floors / units / buildings | 7 / — / — |
| Lot size | — |
| Year built | 1912 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | — |
Recorded owner (assessment roll)
MULTNOMAH COUNTY
Owner mailing address: 401 N DIXON ST, PORTLAND, OR, 97227
14 Portland office properties share this owner mailing address →
Commercial property is usually held one building per entity; a shared mailbox is how the roll reveals a portfolio. It is evidence of common ownership, not proof.
Location
- Address
- 421 SW 5TH AVE
- City
- Portland
- ZIP
- 97204
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 421 SW 5TH AVE compare with other Portland office buildings?
At 65,824 sq ft, 421 SW 5TH AVE is about 3 times the size of the average office building on the Portland / Multnomah County roll, which comes to 21,585 sq ft across 2,917 buildings.
Does the owner of 421 SW 5TH AVE hold other Portland office property?
14 Portland office properties (14 parcels, 583.9K sq ft) are recorded to 2 owner entities sharing this parcel's tax-bill mailing address. A shared mailing address is evidence of common ownership, not proof of it.
What does “Office High Rise” mean for this parcel?
The Portland / Multnomah County roll classifies state ID 1N1E34CC4100 as “Office High Rise”. 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 421 SW 5TH AVE?
The recorded owner on the Portland / Multnomah County assessment roll (current) is MULTNOMAH COUNTY. Owner mailing address on file: 401 N DIXON ST, PORTLAND, OR, 97227.
How big is 421 SW 5TH AVE?
The Portland / Multnomah County roll records 65,824 sq ft of building area, 7 floors, a build year of 1912.
What is the state ID for 421 SW 5TH AVE?
State ID 1N1E34CC4100, site address 421 SW 5TH AVE, Portland. It is the key to look the parcel up in the Regional taxlot service (Portland / Multnomah County).
More around 421 SW 5TH AVE
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Portland / Multnomah County — Regional taxlot service (owner names, mailing addresses, floors, building areas, and the last recorded sale with price). Oregon publishes no bulk transaction history and Portland no business-licence roll, so sales are last-per-parcel and no tenant layer exists.
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: Portland / Multnomah County assessment roll, state ID 1N1E34CC4100.
About this data
Source: Regional taxlot service (Portland / Multnomah County), as published September 21, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “421 SW 5TH AVE, Portland, OR (state ID 1N1E34CC4100)”, https://buildingcensus.com/offices/portland/office-building-e574dfc3 (data as of September 21, 2026).