1146 19TH ST NW
Office (large) · Washington · 20036
At a glance
1146 19TH ST NW in Washington, DC is listed on the Washington, DC property roll as “Office (large)”, SSL 01170023. The roll records 61,506 sq ft of building area, a 1986 build year and an assessed value of $6,808,290. 2 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.
Public record — 2 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| HADASSAH, THE WOMEN'S ZIONIST ORGANIZATION OF AMERICA, INC. | — | Sep 2025 | DC business licence | folio match · high |
| 1146 19TH LLC | — | Apr 2025 | DC business licence | folio match · high |
Washington, DC assessment roll
Parcel record
| Field | Value |
|---|---|
| SSL | 01170023 |
| Site address | 1146 19TH ST NW |
| Land use (DOR) | 052 — Office (large) |
| Building area (actual) | 61,506 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | 7,043 sq ft |
| Year built | 1986 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $6,808,290 |
Recorded owner (assessment roll)
1146 19TH LLC
ROCKROSE DEVELOPMENT CORP
Owner mailing address: 15 E 26TH ST FL 7, NEW YORK, NY, 10010
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.
8 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
- 1146 19TH ST NW
- City
- Washington
- ZIP
- 20036
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 1146 19TH ST NW compare with other Washington office buildings?
At 61,506 sq ft, 1146 19TH ST NW is about half 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 $111 per square foot of building area, against $370 across all office floor area on the roll.
Does the owner of 1146 19TH ST NW hold other Washington office property?
1146 19TH 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.
8 Washington office properties (8 parcels, 2M sq ft) are recorded to 8 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 1146 19TH ST NW recently?
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 01170023 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 1146 19TH ST NW?
The recorded owner on the Washington, DC assessment roll (current) is 1146 19TH LLC, ROCKROSE DEVELOPMENT CORP. Owner mailing address on file: 15 E 26TH ST FL 7, NEW YORK, NY, 10010.
What companies have offices at 1146 19TH ST NW?
2 active business locations at this building appear in Washington, DC public records, including HADASSAH, THE WOMEN'S ZIONIST ORGANIZATION OF AMERICA, INC., 1146 19TH LLC. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 1146 19TH ST NW?
The Washington, DC roll records 61,506 sq ft of building area, a build year of 1986. It sits on a 7,043 sq ft lot.
What is the assessed value of 1146 19TH ST NW?
$6,808,290 on the Washington, DC roll. Assessed values are taxable-roll figures, not market prices.
What is the SSL for 1146 19TH ST NW?
SSL 01170023, site address 1146 19TH ST NW, Washington. It is the key to look the parcel up in the Integrated Tax System public extract (Washington, DC).
More around 1146 19TH 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 01170023.
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, “1146 19TH ST NW, Washington, DC (SSL 01170023)”, https://buildingcensus.com/offices/dc/office-building-66763149 (data as of September 20, 2026).