KAISER FOUNDATION HEALTH PLAN OF TH
45 office properties in Portland / Multnomah County recorded to 3 owner entities mailing to 500 NE MULTNOMAH ST #100, PORTLAND, OR. likely one owner
At a glance
KAISER FOUNDATION HEALTH PLAN OF TH is recorded as the owner of 45 office properties (45 parcels) in Portland / Multnomah County, totalling 1.4M sq ft of building area. The holdings sit in 3 owner entities that share one tax-bill mailing address in PORTLAND, OR — and a name root, which is how a single sponsor usually holds property.
County assessment roll
Properties
Names on the deeds
Owner entities at this address
- KAISER FOUNDATION HEALTH PLAN OF TH
- KAISER HEALTH PLAN OF OREGON
- KAISER FOUNDATION HOSP
How this group was built. These entities share both a mailing address and a name root, which is how a single sponsor usually holds property — one entity per building.The county records an owner and a mailing address for every parcel; this page collects the office parcels whose owners mail to the same address, and counts buildings rather than parcels using the county's own condo-to-building link. Lease terms, rents and the identity of a manager acting for the owner are not public records and are not shown.
Where are KAISER FOUNDATION HEALTH PLAN OF TH's office buildings?
The 45 properties are spread across 2 cities, led by Portland (43), Gresham (2).
The largest is 3500 N INTERSTATE AVE in Portland at 303.1K sq ft over 5 floors.
Recorded build years run from 1908 to 2019.
How large is this portfolio within Portland's office market?
Its 1.4M sq ft is 2.19% of the 63M sq ft of office building area on the Portland / Multnomah County roll.
It holds 45 of the metro's 2,917 office buildings.
2 of its parcels carry a recorded sale price; the most recent was 500 WI/ NE MULTNOMAH ST in Dec 2018 for $15,673,607.
Frequently asked questions
How many office buildings does KAISER FOUNDATION HEALTH PLAN OF TH own in Portland?
45 office properties (45 parcels) on the Portland / Multnomah County roll, counted by building rather than by condo parcel.
What is KAISER FOUNDATION HEALTH PLAN OF TH's largest office building?
3500 N INTERSTATE AVE, Portland — 303.1K sq ft.
Are these properties owned by one company?
These entities share both a mailing address and a name root, which is how a single sponsor usually holds property — one entity per building. 3 owner entities share the mailing address. It is evidence of common ownership, not proof of it.
When did one of KAISER FOUNDATION HEALTH PLAN OF TH's Portland office properties last change hands?
The most recent recorded transfer among these parcels is 500 WI/ NE MULTNOMAH ST, Dec 2018, for $15,673,607.
Related
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.
Dataset updated . Derived from public data sources.
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, “KAISER FOUNDATION HEALTH PLAN OF TH — Portland office property holdings”, https://buildingcensus.com/offices/portland/owners/kaiser-foundation-health-plan-of-th-c88c4b (data as of September 21, 2026).