1800 K ST NW
Office (large) · Washington · 20006
At a glance
1800 K ST NW in Washington, DC is listed on the Washington, DC property roll as “Office (large)”, SSL 01060048. The roll records 242,124 sq ft of building area, a 1971 build year and an assessed value of $118,789,160. 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.
Public record — 3 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| DEUTSCHE TELEKOM | — | Feb 2026 | DC business licence | folio match · high |
| COLONIAL PARKING INC. | — | Nov 2025 | DC business licence | folio match · high |
| CHARLES BARBERSHOP LLC. | B1 | Apr 2025 | DC business licence | folio match · high |
Washington, DC assessment roll
Parcel record
| Field | Value |
|---|---|
| SSL | 01060048 |
| Site address | 1800 K ST NW |
| Land use (DOR) | 052 — Office (large) |
| Building area (actual) | 242,124 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | 20,812 sq ft |
| Year built | 1971 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $118,789,160 |
Recorded owner (assessment roll)
RAR2 1800 K ST NW DC INC
RREET AMERICA LLC
Owner mailing address: PO BOX 4900, SCOTTSDALE, AZ, 85261
19 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
- 1800 K ST NW
- City
- Washington
- ZIP
- 20006
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 1800 K ST NW compare with other Washington office buildings?
At 242,124 sq ft, 1800 K ST NW is about twice 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 $491 per square foot of building area, against $370 across all office floor area on the roll.
Does the owner of 1800 K ST NW hold other Washington office property?
19 Washington office properties (19 parcels, 2.5M sq ft) are recorded to 16 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 1800 K ST NW recently?
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 01060048 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 1800 K ST NW?
The recorded owner on the Washington, DC assessment roll (current) is RAR2 1800 K ST NW DC INC, RREET AMERICA LLC. Owner mailing address on file: PO BOX 4900, SCOTTSDALE, AZ, 85261.
What companies have offices at 1800 K ST NW?
3 active business locations at this building appear in Washington, DC public records, including DEUTSCHE TELEKOM, COLONIAL PARKING INC., CHARLES BARBERSHOP LLC.. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 1800 K ST NW?
The Washington, DC roll records 242,124 sq ft of building area, a build year of 1971. It sits on a 20,812 sq ft lot.
What is the assessed value of 1800 K ST NW?
$118,789,160 on the Washington, DC roll. Assessed values are taxable-roll figures, not market prices.
What is the SSL for 1800 K ST NW?
SSL 01060048, site address 1800 K ST NW, Washington. It is the key to look the parcel up in the Integrated Tax System public extract (Washington, DC).
More around 1800 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 01060048.
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, “1800 K ST NW, Washington, DC (SSL 01060048)”, https://buildingcensus.com/offices/dc/office-building-c1e4d47d (data as of September 20, 2026).