1156 15TH ST NW
Office (large) · Washington · 20005
At a glance
1156 15TH ST NW in Washington, DC is listed on the Washington, DC property roll as “Office (large)”, SSL 01970079. The roll records 260,598 sq ft of building area, a 1968 build year and an assessed value of $36,674,180. 8 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 — 8 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| COLORECTAL CANCER ALLIANCE, INC | — | Sep 2026 | DC business licence | folio match · high |
| Excelencia in Education | — | Feb 2026 | DC business licence | folio match · high |
| Revolutionary War Trust, Civil War Trust | 900 | Feb 2026 | DC business licence | folio match · high |
| REPORTERS COMMITTEE FOR FREEDOM OF THE PRESS | 1020 | Sep 2025 | DC business licence | folio match · high |
| Auction.com, Inc. | — | Apr 2025 | DC business licence | folio match · high |
| INSTITUTE FOR WAR & PEACE REPORTING (US) | Suite 500 | Apr 2025 | DC business licence | folio match · high |
| Pyxis Partners | — | Mar 2025 | DC business licence | folio match · high |
| FEMHEALTH USA, INC. | — | Nov 2024 | DC business licence | folio match · high |
Washington, DC assessment roll
Parcel record
| Field | Value |
|---|---|
| SSL | 01970079 |
| Site address | 1156 15TH ST NW |
| Land use (DOR) | 052 — Office (large) |
| Building area (actual) | 260,598 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | 16,712 sq ft |
| Year built | 1968 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $36,674,180 |
Recorded owner (assessment roll)
1156 FIFTEENTH LLC
Owner mailing address: 1620 I ST NW, WASHINGTON, DC, 20006
Location
- Address
- 1156 15TH ST NW
- City
- Washington
- ZIP
- 20005
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 1156 15TH ST NW compare with other Washington office buildings?
At 260,598 sq ft, 1156 15TH ST NW is about twice 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 $141 per square foot of building area, against $370 across all office floor area on the roll.
What has happened at 1156 15TH 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 01970079 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 1156 15TH ST NW?
The recorded owner on the Washington, DC assessment roll (current) is 1156 FIFTEENTH LLC. Owner mailing address on file: 1620 I ST NW, WASHINGTON, DC, 20006.
What companies have offices at 1156 15TH ST NW?
8 active business locations at this building appear in Washington, DC public records, including COLORECTAL CANCER ALLIANCE, INC, Excelencia in Education, Revolutionary War Trust, Civil War Trust, REPORTERS COMMITTEE FOR FREEDOM OF THE PRESS, Auction.com, Inc.. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 1156 15TH ST NW?
The Washington, DC roll records 260,598 sq ft of building area, a build year of 1968. It sits on a 16,712 sq ft lot.
What is the assessed value of 1156 15TH ST NW?
$36,674,180 on the Washington, DC roll. Assessed values are taxable-roll figures, not market prices.
What is the SSL for 1156 15TH ST NW?
SSL 01970079, site address 1156 15TH ST NW, Washington. It is the key to look the parcel up in the Integrated Tax System public extract (Washington, DC).
More around 1156 15TH 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 01970079.
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, “1156 15TH ST NW, Washington, DC (SSL 01970079)”, https://buildingcensus.com/offices/dc/office-building-1bef5781 (data as of September 20, 2026).