401 9TH ST NW
Office (large) · Washington · 20004
At a glance
401 9TH ST NW in Washington, DC is listed on the Washington, DC property roll as “Office (large)”, SSL 04070815. The roll records a 1999 build year and an assessed value of $167,581,590. 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 2 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.
Federal lease inventory — actual rent paid
Leases on public record
| Lease | Rentable sq ft | Annual rent | $/sq ft | Term | Options left |
|---|---|---|---|---|---|
| LDC00427 | 24,053 | $1,078,221 | $44.83 | Jun 2022 → Jun 2037 | — |
From the General Services Administration's monthly lease inventory: the rent the federal government actually pays, the square feet behind it, the dates, and the renewal options remaining. A fully serviced lease includes services and utilities, so it is not comparable to a net rent. This is one tenant, not the market. Federal space is often fitted for a specific agency and leased on government terms, so treat it as a real, checkable data point rather than an asking rent for the building.
Public record — 2 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| KRAKEN AXES | — | Oct 2025 | DC business licence | folio match · high |
| AVENUE SOLUTIONS | — | Oct 2024 | DC business licence | folio match · high |
Washington, DC assessment roll
Parcel record
| Field | Value |
|---|---|
| SSL | 04070815 |
| Site address | 401 9TH ST NW |
| Land use (DOR) | 052 — Office (large) |
| Building area (actual) | — |
| Floors / units / buildings | — / — / — |
| Lot size | 40,500 sq ft |
| Year built | 1999 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $167,581,590 |
Recorded owner (assessment roll)
SQUARE 407 LIMITED PARTNERSHIP
Owner mailing address: 1725 DESALES ST NW STE 900, WASHINGTON, DC, 20036
5 Washington 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
- 401 9TH ST NW
- City
- Washington
- ZIP
- 20004
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
Does the owner of 401 9TH ST NW hold other Washington office property?
5 Washington office properties (5 parcels, 388.3K sq ft) are recorded to 4 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 401 9TH ST NW recently?
The federal government leases space here: 1 active lease in the GSA inventory, the latest expiring Jun 2037.
The building files energy-benchmarking disclosures — 2 report years are matched to this parcel.
What does “Office (large)” mean for this parcel?
The Washington, DC roll classifies SSL 04070815 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 401 9TH ST NW?
The recorded owner on the Washington, DC assessment roll (current) is SQUARE 407 LIMITED PARTNERSHIP. Owner mailing address on file: 1725 DESALES ST NW STE 900, WASHINGTON, DC, 20036.
What companies have offices at 401 9TH ST NW?
2 active business locations at this building appear in Washington, DC public records, including KRAKEN AXES, AVENUE SOLUTIONS. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 401 9TH ST NW?
The Washington, DC roll records a build year of 1999. It sits on a 40,500 sq ft lot.
What is the assessed value of 401 9TH ST NW?
$167,581,590 on the Washington, DC roll. Assessed values are taxable-roll figures, not market prices.
What is the SSL for 401 9TH ST NW?
SSL 04070815, site address 401 9TH ST NW, Washington. It is the key to look the parcel up in the Integrated Tax System public extract (Washington, DC).
More around 401 9TH ST NW
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.
- U.S. General Services Administration — lease inventory — Active federal leases published monthly: annual rent actually paid, rentable square feet, effective and expiration dates, termination right, renewal options remaining and the lessor's name.
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 04070815.
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, “401 9TH ST NW, Washington, DC (SSL 04070815)”, https://buildingcensus.com/offices/dc/office-building-217a7fa3 (data as of September 20, 2026).