1800 G ST NW
Office (large) · Washington · 20006
The building's own benchmarking filing
Energy performance
From the building's own filing under the City of Miami'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.
Federal lease inventory — actual rent paid
Leases on public record
| Lease | Rentable sq ft | Annual rent | $/sq ft | Term | Options left |
|---|---|---|---|---|---|
| LDC00588 | 217,000 | $9,202,187 | $42.41 | Jan 2023 → Jan 2043 | 2 · 10yr |
| LDC00811 | — | $50,160 | — | May 2026 → May 2036 | — |
| LDC12540 | 300,044 | $15,609,961 | $52.03 | May 2012 → Apr 2027 | — |
| LDC00535 | — | $250,736 | — | Jun 2021 → Aug 2026 | — |
From the General Services Administration's monthly lease inventory: the rent the federal government actually pays, the square feet behind it, the dates, and the renewal options remaining. A fully serviced lease includes services and utilities, so it is not comparable to a net rent. This is one tenant, not the market. Federal space is often fitted for a specific agency and leased on government terms, so treat it as a real, checkable data point rather than an asking rent for the building.
Public record — 1 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| COLONIAL PARKING INC. | 100 | Jan 2025 | dc_dlcp | folio match · high |
Washington, DC assessment roll
Parcel record
| Field | Value |
|---|---|
| SSL | 01420825 |
| Site address | 1800 G ST NW |
| Land use (DOR) | 052 — Office (large) |
| Building area (actual) | 813,848 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | 54,457 sq ft |
| Year built | 1965 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $172,390,400 |
Recorded owner (assessment roll)
NORTHWESTERN DEVELOPMENT CO
Owner mailing address: 1150 CONNECTICUT AVE NW SUITE 801, WASHINGTON, DC, 20036
5 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 G ST NW
- City
- Washington
- ZIP
- 20006
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
Frequently asked questions
Who owns 1800 G ST NW?
The recorded owner on the Washington, DC assessment roll (current) is NORTHWESTERN DEVELOPMENT CO. Owner mailing address on file: 1150 CONNECTICUT AVE NW SUITE 801, WASHINGTON, DC, 20036.
What companies have offices at 1800 G ST NW?
1 active business locations at this building appear in Washington, DC public records, including COLONIAL PARKING INC.. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 1800 G ST NW?
The county assessment roll records 813,848 sq ft of building area, built in 1965, on a 54,457 sq ft lot, with a current assessed value of $172,390,400.
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Miami-Dade County Property Appraiser — assessment roll — Parcel identity, site address, recorded owner, use code, areas, year built and assessed values, via the county's public GIS services (MD_LandInformation, PaGis layer).
- Miami-Dade County Local Business Tax roll — Business-tax receipts: business name, premises address (incl. suite/floor), account status and start date, via the county's public GIS services.
- Florida Division of Corporations (Sunbiz) — corporate data file — Registered entities: document number, status, filing date, registered agent and principal address, from the state's public quarterly data file.
- U.S. General Services Administration — lease inventory — Active federal leases published monthly: annual rent actually paid, rentable square feet, effective and expiration dates, termination right, renewal options remaining and the lessor's name.
- Miami BE305 building-energy benchmarking disclosures — What the building reported about its own performance: energy intensity, an ENERGY STAR score, reported emissions and water use, under the City of Miami's benchmarking ordinance.
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 01420825.