300 7TH ST SW
Office (large) · Washington · 20024
At a glance
300 7TH ST SW in Washington, DC is listed on the Washington, DC property roll as “Office (large)”, SSL 04640026. The roll records 201,896 sq ft of building area, a 1965 build year and an assessed value of $53,340,140. It last sold for $51,325,000 in Nov 2018. 2 active business locations at this address appear in public records.
The building's own benchmarking filing
Energy performance
From the building's own filing under its city's benchmarking ordinance, latest of 3 years on record. An ENERGY STAR score of 75 or above means the building outperforms three quarters of comparable buildings nationally. It is a self-reported figure, verified by the city only to the extent the ordinance requires.
Recorded transfers — county roll + state sale file
Sale history
| Recorded | Price | Qualification | Source | Instrument |
|---|---|---|---|---|
| Nov 2018 | $51,325,000 | not rated | County roll | — |
Prices are the consideration recorded in Washington, DC'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.
Public record — 2 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| N/A | — | Dec 2026 | DC business licence | folio match · high |
| POTBELLY SANDWICH WORKSvia Potbelly Sandwich Works | — | Dec 2024 | DC business licence | folio match · high |
Washington, DC assessment roll
Parcel record
| Field | Value |
|---|---|
| SSL | 04640026 |
| Site address | 300 7TH ST SW |
| Land use (DOR) | 052 — Office (large) |
| Building area (actual) | 201,896 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | 42,140 sq ft |
| Year built | 1965 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $53,340,140 |
Recorded owner (assessment roll)
WASHINGTON METROPLITAN AREA TRANSIT AUTHORITY
Owner mailing address: 600 5TH ST NW, WASHINGTON, DC, 20001
Location
- Address
- 300 7TH ST SW
- City
- Washington
- ZIP
- 20024
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 300 7TH ST SW compare with other Washington office buildings?
At 201,896 sq ft, 300 7TH ST SW is about 68% larger than 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 $264 per square foot of building area, against $370 across all office floor area on the roll.
The last recorded sale priced it at $254 per square foot.
What has happened at 300 7TH ST SW recently?
1 recorded transfer is on file for this parcel, the latest dated Nov 2018.
The building files energy-benchmarking disclosures — 3 report years are matched to this parcel.
What does “Office (large)” mean for this parcel?
The Washington, DC roll classifies SSL 04640026 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 300 7TH ST SW?
The recorded owner on the Washington, DC assessment roll (current) is WASHINGTON METROPLITAN AREA TRANSIT AUTHORITY. Owner mailing address on file: 600 5TH ST NW, WASHINGTON, DC, 20001.
What companies have offices at 300 7TH ST SW?
2 active business locations at this building appear in Washington, DC public records, including N/A, POTBELLY SANDWICH WORKS. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 300 7TH ST SW?
The Washington, DC roll records 201,896 sq ft of building area, a build year of 1965. It sits on a 42,140 sq ft lot.
What is the assessed value of 300 7TH ST SW?
$53,340,140 on the Washington, DC roll. Assessed values are taxable-roll figures, not market prices.
When did 300 7TH ST SW last sell?
The last recorded transfer was in Nov 2018 for $51,325,000 ($254 per square foot).
What is the SSL for 300 7TH ST SW?
SSL 04640026, site address 300 7TH ST SW, Washington. It is the key to look the parcel up in the Integrated Tax System public extract (Washington, DC).
More around 300 7TH 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 04640026.
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, “300 7TH ST SW, Washington, DC (SSL 04640026)”, https://buildingcensus.com/offices/dc/office-building-29f0f0c4 (data as of September 20, 2026).