1501 K ST NW
Office (large) · Washington · 20005
At a glance
1501 K ST NW in Washington, DC is listed on the Washington, DC property roll as “Office (large)”, SSL 01980846. The roll records 502,963 sq ft of building area, a 1923 build year and an assessed value of $256,032,280. It last sold for $385,400,000 in Dec 2018. 3 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. 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 |
|---|---|---|---|---|
| Dec 2018 | $385,400,000 | 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 — 3 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| Maman | — | Jul 2026 | DC business licence | folio match · high |
| SEASONS CULINARY SERVICES, INC.via SEASONS CULINARY SERVICES INC | — | Apr 2025 | DC business licence | folio match · high |
| DISTRICT OF COLUMBIA ACCESS TO JUSTICE | — | Jan 2025 | DC business licence | folio match · high |
Washington, DC assessment roll
Parcel record
| Field | Value |
|---|---|
| SSL | 01980846 |
| Site address | 1501 K ST NW |
| Land use (DOR) | 052 — Office (large) |
| Building area (actual) | 502,963 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | 36,406 sq ft |
| Year built | 1923 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $256,032,280 |
Recorded owner (assessment roll)
PONTE GADEA K STREET LLC
Owner mailing address: 270 PARK AVE, NEW YORK, NY, 10017
13 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
- 1501 K ST NW
- City
- Washington
- ZIP
- 20005
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 1501 K ST NW compare with other Washington office buildings?
At 502,963 sq ft, 1501 K ST NW is about 4 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 $509 per square foot of building area, against $370 across all office floor area on the roll.
The last recorded sale priced it at $766 per square foot.
Does the owner of 1501 K ST NW hold other Washington office property?
13 Washington office properties (13 parcels, 854.1K sq ft) are recorded to 6 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 1501 K ST NW recently?
1 recorded transfer is on file for this parcel, the latest dated Dec 2018.
The building files energy-benchmarking disclosures — 1 report year are matched to this parcel.
What does “Office (large)” mean for this parcel?
The Washington, DC roll classifies SSL 01980846 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 1501 K ST NW?
The recorded owner on the Washington, DC assessment roll (current) is PONTE GADEA K STREET LLC. Owner mailing address on file: 270 PARK AVE, NEW YORK, NY, 10017.
What companies have offices at 1501 K ST NW?
3 active business locations at this building appear in Washington, DC public records, including Maman, SEASONS CULINARY SERVICES, INC., DISTRICT OF COLUMBIA ACCESS TO JUSTICE. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 1501 K ST NW?
The Washington, DC roll records 502,963 sq ft of building area, a build year of 1923. It sits on a 36,406 sq ft lot.
What is the assessed value of 1501 K ST NW?
$256,032,280 on the Washington, DC roll. Assessed values are taxable-roll figures, not market prices.
When did 1501 K ST NW last sell?
The last recorded transfer was in Dec 2018 for $385,400,000 ($766 per square foot).
What is the SSL for 1501 K ST NW?
SSL 01980846, site address 1501 K ST NW, Washington. It is the key to look the parcel up in the Integrated Tax System public extract (Washington, DC).
More around 1501 K 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 01980846.
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, “1501 K ST NW, Washington, DC (SSL 01980846)”, https://buildingcensus.com/offices/dc/office-building-02cacf68 (data as of September 20, 2026).