505-515 SW 10TH AVE
Office High Rise · Portland · 97205
At a glance
505-515 SW 10TH AVE in Portland, OR is listed on the Portland / Multnomah County property roll as “Office High Rise”, state ID 1N1E34CC5800. The roll records 137,076 sq ft of building area, 15 floors, a 1956 build year.
Portland / Multnomah County assessment roll
Parcel record
| Field | Value |
|---|---|
| state ID | 1N1E34CC5800 |
| Site address | 505-515 SW 10TH AVE |
| Land use (DOR) | — Office High Rise |
| Building area (actual) | 137,076 sq ft |
| Floors / units / buildings | 15 / — / — |
| Lot size | — |
| Year built | 1956 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | — |
Recorded owner (assessment roll)
511 SW 10TH LLC
Owner mailing address: 621 SW ALDER ST #800, PORTLAND, OR, 97205
11 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
- 505-515 SW 10TH AVE
- City
- Portland
- ZIP
- 97205
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 505-515 SW 10TH AVE compare with other Portland office buildings?
At 137,076 sq ft, 505-515 SW 10TH AVE is about 6 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.
With 15 floors it is one of 52 office buildings of ten or more floors in the metro.
Does the owner of 505-515 SW 10TH AVE hold other Portland office property?
11 Portland office properties (11 parcels, 1.4M sq ft) are recorded to 10 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 1N1E34CC5800 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 505-515 SW 10TH AVE?
The recorded owner on the Portland / Multnomah County assessment roll (current) is 511 SW 10TH LLC. Owner mailing address on file: 621 SW ALDER ST #800, PORTLAND, OR, 97205.
How big is 505-515 SW 10TH AVE?
The Portland / Multnomah County roll records 137,076 sq ft of building area, 15 floors, a build year of 1956.
What is the state ID for 505-515 SW 10TH AVE?
State ID 1N1E34CC5800, site address 505-515 SW 10TH AVE, Portland. It is the key to look the parcel up in the Regional taxlot service (Portland / Multnomah County).
More around 505-515 SW 10TH 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 1N1E34CC5800.
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, “505-515 SW 10TH AVE, Portland, OR (state ID 1N1E34CC5800)”, https://buildingcensus.com/offices/portland/office-building-eadebdfd (data as of September 21, 2026).