1050 21ST ST NW
Office (large) · Washington · 20036
At a glance
1050 21ST ST NW in Washington, DC is listed on the Washington, DC property roll as “Office (large)”, SSL 00730886. The roll records a 2018 build year and an assessed value of $21,463,564. 1 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.
Public record — 1 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| STEVEN'S EARLY LEARNING CENTER | — | Aug 2026 | DC business licence | folio match · high |
Washington, DC assessment roll
Parcel record
| Field | Value |
|---|---|
| SSL | 00730886 |
| Site address | 1050 21ST ST NW |
| Land use (DOR) | 052 — Office (large) |
| Building area (actual) | — |
| Floors / units / buildings | — / — / — |
| Lot size | 14,555 sq ft |
| Year built | 2018 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $21,463,564 |
Recorded owner (assessment roll)
DISTRICT OF COLUMBIA
Owner mailing address: 601 13TH ST NW STE 300N, WASHINGTON, DC, 20005
10 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
- 1050 21ST ST NW
- City
- Washington
- ZIP
- 20036
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
Does the owner of 1050 21ST ST NW hold other Washington office property?
10 Washington office properties (10 parcels, 2M 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 has happened at 1050 21ST ST NW recently?
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 00730886 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 1050 21ST ST NW?
The recorded owner on the Washington, DC assessment roll (current) is DISTRICT OF COLUMBIA. Owner mailing address on file: 601 13TH ST NW STE 300N, WASHINGTON, DC, 20005.
What companies have offices at 1050 21ST ST NW?
1 active business locations at this building appear in Washington, DC public records, including STEVEN'S EARLY LEARNING CENTER. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 1050 21ST ST NW?
The Washington, DC roll records a build year of 2018. It sits on a 14,555 sq ft lot.
What is the assessed value of 1050 21ST ST NW?
$21,463,564 on the Washington, DC roll. Assessed values are taxable-roll figures, not market prices.
What is the SSL for 1050 21ST ST NW?
SSL 00730886, site address 1050 21ST ST NW, Washington. It is the key to look the parcel up in the Integrated Tax System public extract (Washington, DC).
More around 1050 21ST 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.
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 00730886.
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, “1050 21ST ST NW, Washington, DC (SSL 00730886)”, https://buildingcensus.com/offices/dc/office-building-ba9109a3 (data as of September 20, 2026).