3299 K ST NW # C101
Office · Washington · 20007
At a glance
3299 K ST NW # C101 in Washington, DC is listed on the Washington, DC property roll as “Office”, SSL 11872355. The roll records 1,200 sq ft of building area, a 1978 build year and an assessed value of $342,790. 9 active business locations at this address appear in public records.
Public record — 9 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| Atelier Verre Design and Build LLC | 220 | Apr 2026 | DC business licence | folio match · high |
| Carolee Williamson | 302 | Mar 2026 | DC business licence | folio match · high |
| Semra Tanrikulu | 201 | Nov 2025 | DC business licence | folio match · high |
| BERNSTEIN COMPANIES (THE) | 602 & 700 | Aug 2025 | DC business licence | folio match · high |
| Anil Sanghera | 202 | Jul 2025 | DC business licence | folio match · high |
| Anne Moulakis | — | Jan 2025 | DC business licence | folio match · high |
| LXIV Group | — | Dec 2024 | DC business licence | folio match · high |
| Hamilton Court | — | Nov 2024 | DC business licence | folio match · high |
| Grace Street Coffee Roasters, | — | Feb 2024 | DC business licence | folio match · high |
Washington, DC assessment roll
Parcel record
| Field | Value |
|---|---|
| SSL | 11872355 |
| Site address | 3299 K ST NW # C101 |
| Land use (DOR) | 058 — Office |
| Building area (actual) | 1,200 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | 278 sq ft |
| Year built | 1978 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $342,790 |
Recorded owner (assessment roll)
MILL PARTNERS PAPERMILL L P
Owner mailing address: 3299 K ST NW STE 700, WASHINGTON, DC, 20007
3 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
- 3299 K ST NW # C101
- City
- Washington
- ZIP
- 20007
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 3299 K ST NW # C101 compare with other Washington office buildings?
At 1,200 sq ft, 3299 K ST NW # C101 is less than a tenth 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 $286 per square foot of building area, against $370 across all office floor area on the roll.
Does the owner of 3299 K ST NW # C101 hold other Washington office property?
3 Washington office properties (3 parcels, 223.7K sq ft) are recorded to 3 owner entities sharing this parcel's tax-bill mailing address. A shared mailing address is evidence of common ownership, not proof of it.
What does “Office” mean for this parcel?
The Washington, DC roll classifies SSL 11872355 as “Office” (use code 058). 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 3299 K ST NW # C101?
The recorded owner on the Washington, DC assessment roll (current) is MILL PARTNERS PAPERMILL L P. Owner mailing address on file: 3299 K ST NW STE 700, WASHINGTON, DC, 20007.
What companies have offices at 3299 K ST NW # C101?
9 active business locations at this building appear in Washington, DC public records, including Atelier Verre Design and Build LLC, Carolee Williamson, Semra Tanrikulu, BERNSTEIN COMPANIES (THE), Anil Sanghera. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 3299 K ST NW # C101?
The Washington, DC roll records 1,200 sq ft of building area, a build year of 1978. It sits on a 278 sq ft lot.
What is the assessed value of 3299 K ST NW # C101?
$342,790 on the Washington, DC roll. Assessed values are taxable-roll figures, not market prices.
What is the SSL for 3299 K ST NW # C101?
SSL 11872355, site address 3299 K ST NW # C101, Washington. It is the key to look the parcel up in the Integrated Tax System public extract (Washington, DC).
More around 3299 K ST NW # C101
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 11872355.
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, “3299 K ST NW # C101, Washington, DC (SSL 11872355)”, https://buildingcensus.com/offices/dc/office-building-2915d79f (data as of September 20, 2026).