1100 G ST NW
Office (large) · Washington · 20005
At a glance
1100 G ST NW in Washington, DC is listed on the Washington, DC property roll as “Office (large)”, SSL 03200815. The roll records 144,356 sq ft of building area, a 1968 build year and an assessed value of $18,800,000. It last sold for $54,000,000 in May 2018. 7 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 |
|---|---|---|---|---|
| May 2018 | $54,000,000 | 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 — 7 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| N/A | — | Oct 2026 | DC business licence | folio match · high |
| Meltwater News US Inc. | — | Mar 2026 | DC business licence | folio match · high |
| 1100 G Holdings LLC | — | May 2025 | DC business licence | folio match · high |
| COMAGINE HEALTH | 910 | May 2025 | DC business licence | folio match · high |
| NP Consulting | — | Jan 2025 | DC business licence | folio match · high |
| WASHINGTON ENGLISH CENTER | — | Oct 2024 | DC business licence | folio match · high |
| Sirona Strategies LLC | — | Jul 2024 | DC business licence | folio match · high |
Washington, DC assessment roll
Parcel record
| Field | Value |
|---|---|
| SSL | 03200815 |
| Site address | 1100 G ST NW |
| Land use (DOR) | 052 — Office (large) |
| Building area (actual) | 144,356 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | 10,727 sq ft |
| Year built | 1968 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $18,800,000 |
Recorded owner (assessment roll)
1100G HOLDINGS LLC
MC REAL ESTATE PARTNERS
Owner mailing address: 9 E 38TH ST FL 11, NEW YORK, NY, 10016
The owner is on site.A business-tax receipt at this address is held in the owner's own name, so the public record shows an owner-occupier rather than a landlord letting the space.
2 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
- 1100 G ST NW
- City
- Washington
- ZIP
- 20005
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 1100 G ST NW compare with other Washington office buildings?
At 144,356 sq ft, 1100 G ST NW is about 20% 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 $130 per square foot of building area, against $370 across all office floor area on the roll.
The last recorded sale priced it at $374 per square foot.
Does the owner of 1100 G ST NW hold other Washington office property?
1100G HOLDINGS LLC also holds a business-tax receipt at this address, so the public record shows an owner-occupier rather than a landlord letting the space.
2 Washington office properties (2 parcels, 235.7K sq ft) are recorded to 2 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 1100 G ST NW recently?
1 recorded transfer is on file for this parcel, the latest dated May 2018.
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 03200815 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 1100 G ST NW?
The recorded owner on the Washington, DC assessment roll (current) is 1100G HOLDINGS LLC, MC REAL ESTATE PARTNERS. Owner mailing address on file: 9 E 38TH ST FL 11, NEW YORK, NY, 10016.
What companies have offices at 1100 G ST NW?
7 active business locations at this building appear in Washington, DC public records, including N/A, Meltwater News US Inc., 1100 G Holdings LLC, COMAGINE HEALTH, NP Consulting. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 1100 G ST NW?
The Washington, DC roll records 144,356 sq ft of building area, a build year of 1968. It sits on a 10,727 sq ft lot.
What is the assessed value of 1100 G ST NW?
$18,800,000 on the Washington, DC roll. Assessed values are taxable-roll figures, not market prices.
When did 1100 G ST NW last sell?
The last recorded transfer was in May 2018 for $54,000,000 ($374 per square foot).
What is the SSL for 1100 G ST NW?
SSL 03200815, site address 1100 G ST NW, Washington. It is the key to look the parcel up in the Integrated Tax System public extract (Washington, DC).
More around 1100 G 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 03200815.
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, “1100 G ST NW, Washington, DC (SSL 03200815)”, https://buildingcensus.com/offices/dc/office-building-a753e500 (data as of September 20, 2026).