1233 20TH ST NW
Office (large) · Washington · 20036
At a glance
1233 20TH ST NW in Washington, DC is listed on the Washington, DC property roll as “Office (large)”, SSL 01160850. The roll records 222,726 sq ft of building area, a 1984 build year and an assessed value of $41,386,760. It last sold for $12,425,000 in Apr 2026. 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.
Recorded transfers — county roll + state sale file
Sale history
| Recorded | Price | Qualification | Source | Instrument |
|---|---|---|---|---|
| Apr 2026 | $12,425,000 | not rated | County roll | — |
| Oct 2018 | $65,000,000 | 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 |
|---|---|---|---|---|
| BUSINESS FOR AMERICA EDUCATION FUND | — | Apr 2025 | DC business licence | folio match · high |
| Imperial Parking (Us) LLCvia Imperial Parking US LLC | — | Dec 2024 | DC business licence | folio match · high |
Washington, DC assessment roll
Parcel record
| Field | Value |
|---|---|
| SSL | 01160850 |
| Site address | 1233 20TH ST NW |
| Land use (DOR) | 052 — Office (large) |
| Building area (actual) | 222,726 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | 20,015 sq ft |
| Year built | 1984 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $41,386,760 |
Recorded owner (assessment roll)
JEMAL'S LION L.L.C.
Owner mailing address: 655 NEW YORK AVE NW STE 830, WASHINGTON, DC, 20001
43 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
- 1233 20TH ST NW
- City
- Washington
- ZIP
- 20036
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 1233 20TH ST NW compare with other Washington office buildings?
At 222,726 sq ft, 1233 20TH ST NW is about 85% 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 $186 per square foot of building area, against $370 across all office floor area on the roll.
The last recorded sale priced it at $56 per square foot.
Does the owner of 1233 20TH ST NW hold other Washington office property?
43 Washington office properties (43 parcels, 2.7M sq ft) are recorded to 32 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 1233 20TH ST NW recently?
2 recorded transfers are on file for this parcel, the latest dated Apr 2026.
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 01160850 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 1233 20TH ST NW?
The recorded owner on the Washington, DC assessment roll (current) is JEMAL'S LION L.L.C.. Owner mailing address on file: 655 NEW YORK AVE NW STE 830, WASHINGTON, DC, 20001.
What companies have offices at 1233 20TH ST NW?
2 active business locations at this building appear in Washington, DC public records, including BUSINESS FOR AMERICA EDUCATION FUND, Imperial Parking (Us) LLC. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 1233 20TH ST NW?
The Washington, DC roll records 222,726 sq ft of building area, a build year of 1984. It sits on a 20,015 sq ft lot.
What is the assessed value of 1233 20TH ST NW?
$41,386,760 on the Washington, DC roll. Assessed values are taxable-roll figures, not market prices.
When did 1233 20TH ST NW last sell?
The last recorded transfer was in Apr 2026 for $12,425,000 ($56 per square foot).
What is the SSL for 1233 20TH ST NW?
SSL 01160850, site address 1233 20TH ST NW, Washington. It is the key to look the parcel up in the Integrated Tax System public extract (Washington, DC).
More around 1233 20TH 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 01160850.
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, “1233 20TH ST NW, Washington, DC (SSL 01160850)”, https://buildingcensus.com/offices/dc/office-building-75919184 (data as of September 20, 2026).