Argentine Permanent Mission to the OAS
1816 Corcoran Street NW, Washington, DC 20009
Argentina’s mission to the Organization of American States occupies a separate building on Corcoran Street. Its multilateral role is distinct from the bilateral embassy.
| Fact | Value | Basis and sources |
|---|---|---|
| Constructed | 1910 | estimated; DC CAMA AYB (average year built) for SSL 0134 0142: 1910. Used as a qualified construction estimate; EYB/effective age is not used. |
| Acquired by Argentina | Not verified | unresolved Original acquisition instrument not established. |
| Neighborhood | Dupont Circle | verified |
| Architect | Not verified | unresolved Original architect not established. |
| Rooms | 30 | estimated; Low-confidence estimate for the OAS mission office building, allowing for offices, meeting space, and support rooms. 10,080 sq ft × 0.62 room-floor fraction ÷ 200 sq ft average counted room = about 30 rooms; sensitivity range 20–50. This is not a surveyed inventory. |
| Floor area | 10,080 sq ft | verified; DC CAMA commercial record for SSL 0134 0142, building 1, section 1: LIVING_GBA 10080 sq ft. This preserves the assessor living gross building area definition. |
| Site area | 6,481 sq ft | verified; DC active parcel 0134 0142, LANDAREA 6,481 sq ft; the separately recorded Corcoran Street parking parcel is excluded. |
| 2026 Value | $4,209,220 | verified; 2026 ASSESSMENT for main OAS mission parcel 0134 0142; the separately recorded parking parcel is excluded. |
| Diplomatic use | 1973 | documented-by; The November 1973 State diplomatic list identifies Argentina Naval Attaché Office at 1816 Corcoran Street. It is now the OAS mission. The documented-by 1973 date refers to Argentine diplomatic use at the property, not commencement of OAS use. PDF p.10, printed p.13. |
Scope and Evidence
Retained as a documented property; detailed geometry remains evidence-blocked.
- maps2.dcgis.dc.gov
- maps2.dcgis.dc.gov
- services.arcgis.com
- services.arcgis.com
- www.cancilleria.gob.ar
- www.fordlibrarymuseum.gov
- www.oas.org
Research Questions
Where Is Permanent Mission to the OAS?
1816 Corcoran Street NW, Washington, DC 20009.
When Was Permanent Mission to the OAS Built?
Constructed: 1910. Record status: estimated. DC CAMA AYB (average year built) for SSL 0134 0142: 1910. Used as a qualified construction estimate; EYB/effective age is not used. Record reviewed on 2026-10-29.
Who Designed Permanent Mission to the OAS?
Architect: Not verified. Record status: unresolved. Original architect not established. Verified in the record on 2026-10-25.
What Is the Floor Area of Permanent Mission to the OAS?
Floor area: 10,080 sq ft. Record status: verified. DC CAMA commercial record for SSL 0134 0142, building 1, section 1: LIVING_GBA 10080 sq ft. This preserves the assessor living gross building area definition. Verified in the record on 2026-10-29.
What Is the Site Area of Permanent Mission to the OAS?
Site area: 6,481 sq ft. Record status: verified. DC active parcel 0134 0142, LANDAREA 6,481 sq ft; the separately recorded Corcoran Street parking parcel is excluded. Verified in the record on 2026-10-29.
What Is the 2026 Value of Permanent Mission to the OAS?
2026 Value: $4,209,220. Record status: verified. 2026 ASSESSMENT for main OAS mission parcel 0134 0142; the separately recorded parking parcel is excluded. This is a tax assessment, not a verified sale price or market valuation. Verified in the record on 2026-10-29.