420 3RD ST SW
Office (large) · Washington · 20002
At a glance
420 3RD ST SW in Washington, DC is listed on the Washington, DC property roll as “Office (large)”, SSL 05810844. The roll records 658,625 sq ft of building area, a 1940 build year and an assessed value of $116,981,840.
Public record — 0 matched business locations
Tenants & business locations
No active business locations at this address appear in the public records ingested so far. That is a statement about the records, not the building: tenants without a county business-tax receipt or a Florida registration at this address are invisible to public data.
Washington, DC assessment roll
Parcel record
| Field | Value |
|---|---|
| SSL | 05810844 |
| Site address | 420 3RD ST SW |
| Land use (DOR) | 052 — Office (large) |
| Building area (actual) | 658,625 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | 54,737 sq ft |
| Year built | 1940 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $116,981,840 |
Recorded owner (assessment roll)
UNITED STATES OF AMERICA
Owner mailing address: not listed
Location
- Address
- 420 3RD ST SW
- City
- Washington
- ZIP
- 20002
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 420 3RD ST SW compare with other Washington office buildings?
At 658,625 sq ft, 420 3RD ST SW is about 5 times the size of the average office building on the Washington, DC roll, which comes to 120,450 sq ft across 1,761 buildings.
Its assessed value works out to $178 per square foot of building area, against $370 across all office floor area on the roll.
What does “Office (large)” mean for this parcel?
The Washington, DC roll classifies SSL 05810844 as “Office (large)” (use code 052). 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 420 3RD ST SW?
The recorded owner on the Washington, DC assessment roll (current) is UNITED STATES OF AMERICA.
What companies have offices at 420 3RD ST SW?
No business locations at this building appear in the public records ingested so far — no licence, tax or registry record currently lists this address; that is a gap in the record, not proof the building is empty.
How big is 420 3RD ST SW?
The Washington, DC roll records 658,625 sq ft of building area, a build year of 1940. It sits on a 54,737 sq ft lot.
What is the assessed value of 420 3RD ST SW?
$116,981,840 on the Washington, DC roll. Assessed values are taxable-roll figures, not market prices.
What is the SSL for 420 3RD ST SW?
SSL 05810844, site address 420 3RD ST SW, Washington. It is the key to look the parcel up in the Integrated Tax System public extract (Washington, DC).
More around 420 3RD ST SW
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Washington, DC — Integrated Tax System public extract (owner names, mailing addresses, assessments), CAMA commercial and daily sales tables, Basic Business Licenses (suite-level premises; the universal catch-all licence was repealed Oct 2025, thinning the roll thereafter), and DOEE energy benchmarking.
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: Washington, DC assessment roll, SSL 05810844.
About this data
Source: Integrated Tax System public extract (Washington, DC), as published September 20, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “420 3RD ST SW, Washington, DC (SSL 05810844)”, https://buildingcensus.com/offices/dc/office-building-f429e31e (data as of September 20, 2026).