350 SE MILL ST
Office Innovative · Portland · 97214
At a glance
350 SE MILL ST in Portland, OR is listed on the Portland / Multnomah County property roll as “Office Innovative”, state ID 1S1E03DA2600. It last sold for $6,300,000 in Jun 2018.
Recorded transfers — county roll + state sale file
Sale history
| Recorded | Price | Qualification | Source | Instrument |
|---|---|---|---|---|
| Jun 2018 | $6,300,000 | not rated | County roll | — |
Prices are the consideration recorded in Portland / Multnomah 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.
Portland / Multnomah County assessment roll
Parcel record
| Field | Value |
|---|---|
| state ID | 1S1E03DA2600 |
| Site address | 350 SE MILL ST |
| Land use (DOR) | — Office Innovative |
| Building area (actual) | — |
| Floors / units / buildings | — / — / — |
| Lot size | — |
| Year built | — |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | — |
Recorded owner (assessment roll)
1805 MLK OWNER LLC
Owner mailing address: 222 SW COLUMBIA ST #700, PORTLAND, OR, 97201
6 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
- 350 SE MILL ST
- City
- Portland
- ZIP
- 97214
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
Does the owner of 350 SE MILL ST hold other Portland office property?
6 Portland office properties (6 parcels, 523.4K sq ft) are recorded to 5 owner entities sharing this parcel's tax-bill mailing address. A shared mailing address is evidence of common ownership, not proof of it.
What has happened at 350 SE MILL ST recently?
1 recorded transfer is on file for this parcel, the latest dated Jun 2018.
What does “Office Innovative” mean for this parcel?
The Portland / Multnomah County roll classifies state ID 1S1E03DA2600 as “Office Innovative”. 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 350 SE MILL ST?
The recorded owner on the Portland / Multnomah County assessment roll (current) is 1805 MLK OWNER LLC. Owner mailing address on file: 222 SW COLUMBIA ST #700, PORTLAND, OR, 97201.
When did 350 SE MILL ST last sell?
The last recorded transfer was in Jun 2018 for $6,300,000.
What is the state ID for 350 SE MILL ST?
State ID 1S1E03DA2600, site address 350 SE MILL ST, Portland. It is the key to look the parcel up in the Regional taxlot service (Portland / Multnomah County).
More around 350 SE MILL ST
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 1S1E03DA2600.
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, “350 SE MILL ST, Portland, OR (state ID 1S1E03DA2600)”, https://buildingcensus.com/offices/portland/office-building-ac6a954c (data as of September 21, 2026).