2445 M STREET OWNER, LLC
2 office properties in Washington, DC recorded to 2 owner entities mailing to 510 MADISON AVE FL 18, NEW YORK, NY. likely one owner
At a glance
2445 M STREET OWNER, LLC is recorded as the owner of 2 office properties (2 parcels) in Washington, DC, totalling 600.1K sq ft of building area with $178.7M of assessed value. The holdings sit in 2 owner entities that share one tax-bill mailing address in NEW YORK, NY — and a name root, which is how a single sponsor usually holds property.
County assessment roll
Properties
| Building | Submarket | Sq ft | Assessed | Last sold | Tenants |
|---|---|---|---|---|---|
| 2445 M ST NW | Washington | 397.1K | $104.6M | $101,000,000 · Mar 2026 | 7 |
| 660 NORTH CAPITOL ST NW | Washington | 203K | $74.1M | $81,659,698 · Jul 2026 | 7 |
Names on the deeds
Owner entities at this address
- 2445 M STREET OWNER, LLC
- 660 N CAPITOL OWNER, LLC
How this group was built. These entities share both a mailing address and a name root, which is how a single sponsor usually holds property — one entity per building.The county records an owner and a mailing address for every parcel; this page collects the office parcels whose owners mail to the same address, and counts buildings rather than parcels using the county's own condo-to-building link. Lease terms, rents and the identity of a manager acting for the owner are not public records and are not shown.
Where are 2445 M STREET OWNER, LLC's office buildings?
All 2 properties are in Washington.
The largest is 2445 M ST NW in Washington at 397.1K sq ft.
Recorded build years run from 1986 to 2015.
How large is this portfolio within Washington's office market?
Its 600.1K sq ft is 0.28% of the 212.1M sq ft of office building area on the Washington, DC roll.
Its $178.7M of assessed value is 0.23% of the metro's office total.
It holds 2 of the metro's 1,761 office buildings.
2 of its parcels carry a recorded sale price; the most recent was 660 NORTH CAPITOL ST NW in Jul 2026 for $81,659,698.
Frequently asked questions
How many office buildings does 2445 M STREET OWNER, LLC own in Washington?
2 office properties (2 parcels) on the Washington, DC roll, counted by building rather than by condo parcel.
What is 2445 M STREET OWNER, LLC's largest office building?
2445 M ST NW, Washington — 397.1K sq ft, assessed at $104.6M.
What are 2445 M STREET OWNER, LLC's office properties worth?
Their combined assessed value on the current Washington, DC roll is $178,678,780. Assessed values are taxable-roll figures, not market prices.
Are these properties owned by one company?
These entities share both a mailing address and a name root, which is how a single sponsor usually holds property — one entity per building. 2 owner entities share the mailing address. It is evidence of common ownership, not proof of it.
When did one of 2445 M STREET OWNER, LLC's Washington office properties last change hands?
The most recent recorded transfer among these parcels is 660 NORTH CAPITOL ST NW, Jul 2026, for $81,659,698.
Related
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.
Dataset updated . Derived from public data sources.
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, “2445 M STREET OWNER, LLC — Washington office property holdings”, https://buildingcensus.com/offices/dc/owners/2445-m-street-owner-llc-7da89f (data as of September 20, 2026).