1133 15TH ST NW
Office (large) · Washington · 20005
At a glance
1133 15TH ST NW in Washington, DC is listed on the Washington, DC property roll as “Office (large)”, SSL 02140103. The roll records 286,200 sq ft of building area, a 1969 build year and an assessed value of $51,251,910. It last sold for $100,500,000 in Oct 2017. 6 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 |
|---|---|---|---|---|
| Oct 2017 | $100,500,000 | 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 — 6 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| DC WITNESS | — | Apr 2026 | DC business licence | folio match · high |
| SOCIETY FOR CONSERVATION BIOLOGY | — | Dec 2025 | DC business licence | folio match · high |
| Amida Technology Solutions, Inc. | — | Oct 2025 | DC business licence | folio match · high |
| INSIGHT INTERFACES, LLC | — | Jul 2025 | DC business licence | folio match · high |
| WASHINGTON LITERACY CENTER (THE) | 300 | Feb 2025 | DC business licence | folio match · high |
| CHAMBER OF DIGITAL COMMERCE | — | Jan 2025 | DC business licence | folio match · high |
Washington, DC assessment roll
Parcel record
| Field | Value |
|---|---|
| SSL | 02140103 |
| Site address | 1133 15TH ST NW |
| Land use (DOR) | 052 — Office (large) |
| Building area (actual) | 286,200 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | 20,997 sq ft |
| Year built | 1969 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $51,251,910 |
Recorded owner (assessment roll)
DWF V 1133 15TH LLC
Owner mailing address: PO BOX 130667, CARLSBAD, CA, 92013
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
- 1133 15TH ST NW
- City
- Washington
- ZIP
- 20005
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 1133 15TH ST NW compare with other Washington office buildings?
At 286,200 sq ft, 1133 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 $179 per square foot of building area, against $370 across all office floor area on the roll.
The last recorded sale priced it at $351 per square foot.
Does the owner of 1133 15TH ST NW hold other Washington office property?
5 Washington office properties (5 parcels, 980.4K sq ft) are recorded to 4 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 1133 15TH ST NW recently?
1 recorded transfer is on file for this parcel, the latest dated Oct 2017.
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 02140103 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 1133 15TH ST NW?
The recorded owner on the Washington, DC assessment roll (current) is DWF V 1133 15TH LLC. Owner mailing address on file: PO BOX 130667, CARLSBAD, CA, 92013.
What companies have offices at 1133 15TH ST NW?
6 active business locations at this building appear in Washington, DC public records, including DC WITNESS, SOCIETY FOR CONSERVATION BIOLOGY, Amida Technology Solutions, Inc., INSIGHT INTERFACES, LLC, WASHINGTON LITERACY CENTER (THE). Public records under-count tenants that don't hold a local receipt or register the address.
How big is 1133 15TH ST NW?
The Washington, DC roll records 286,200 sq ft of building area, a build year of 1969. It sits on a 20,997 sq ft lot.
What is the assessed value of 1133 15TH ST NW?
$51,251,910 on the Washington, DC roll. Assessed values are taxable-roll figures, not market prices.
When did 1133 15TH ST NW last sell?
The last recorded transfer was in Oct 2017 for $100,500,000 ($351 per square foot).
What is the SSL for 1133 15TH ST NW?
SSL 02140103, site address 1133 15TH ST NW, Washington. It is the key to look the parcel up in the Integrated Tax System public extract (Washington, DC).
More around 1133 15TH ST NW
- Washington, DC office buildings· 1,761 buildings
- 1620 L STREET DC OWNER LLC· 5 properties
- DC WITNESS· tenant on record
- SOCIETY FOR CONSERVATION BIOLOGY· tenant on record
- Amida Technology Solutions, Inc.· tenant on record
- INSIGHT INTERFACES, LLC· tenant on record
- Federal office leases in DC
- Office census — all metros
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 02140103.
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, “1133 15TH ST NW, Washington, DC (SSL 02140103)”, https://buildingcensus.com/offices/dc/office-building-eba742f6 (data as of September 20, 2026).