1220 12TH ST SE
Office (large) · Washington · 20003
At a glance
1220 12TH ST SE in Washington, DC is listed on the Washington, DC property roll as “Office (large)”, SSL 10250812. The roll records 145,117 sq ft of building area, a 2002 build year and an assessed value of $33,987,570. 10 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 3 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 — 10 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| UNIVERSAL HOME HEALTHCARE INC | — | Sep 2026 | DC business licence | folio match · high |
| CW & SONS INFRASTRUCTURE INC. | G-60 | May 2026 | DC business licence | folio match · high |
| CORENIC CONSTRUCTION GROUP LLC | — | Nov 2025 | DC business licence | folio match · high |
| Document Systems, Inc. | Suite 200 | Jun 2025 | DC business licence | folio match · high |
| CEDAR DELI | 50 | May 2025 | DC business licence | folio match · high |
| SPECTRUM MANAGEMENT, LLC. | 280 | Apr 2025 | DC business licence | folio match · high |
| CARDINAL ENGINEERING | 140 | Mar 2025 | DC business licence | folio match · high |
| Atlas Intelligence | 280 | Dec 2024 | DC business licence | folio match · high |
| Verida, | — | Sep 2024 | DC business licence | folio match · high |
| COLLEGE SUCCESS FOUNDATION - DISTRICT OF COLUMBIA | — | May 2023 | DC business licence | folio match · high |
Washington, DC assessment roll
Parcel record
| Field | Value |
|---|---|
| SSL | 10250812 |
| Site address | 1220 12TH ST SE |
| Land use (DOR) | 052 — Office (large) |
| Building area (actual) | 145,117 sq ft |
| Floors / units / buildings | — / — / — |
| Lot size | 97,384 sq ft |
| Year built | 2002 |
| Zoning (primary) | — |
| Land value | — |
| Building value | — |
| Total assessed value | $33,987,570 |
Recorded owner (assessment roll)
WASHINGTON GAS LIGHT CO
Owner mailing address: 101 CONSTITUTION AVE NW, WASHINGTON, DC, 20080
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
- 1220 12TH ST SE
- City
- Washington
- ZIP
- 20003
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 1220 12TH ST SE compare with other Washington office buildings?
At 145,117 sq ft, 1220 12TH ST SE 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 $234 per square foot of building area, against $370 across all office floor area on the roll.
Does the owner of 1220 12TH ST SE hold other Washington office property?
2 Washington office properties (2 parcels, 352.5K sq ft) are recorded to an owner 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 1220 12TH ST SE recently?
The building files energy-benchmarking disclosures — 3 report years are matched to this parcel.
What does “Office (large)” mean for this parcel?
The Washington, DC roll classifies SSL 10250812 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 1220 12TH ST SE?
The recorded owner on the Washington, DC assessment roll (current) is WASHINGTON GAS LIGHT CO. Owner mailing address on file: 101 CONSTITUTION AVE NW, WASHINGTON, DC, 20080.
What companies have offices at 1220 12TH ST SE?
10 active business locations at this building appear in Washington, DC public records, including UNIVERSAL HOME HEALTHCARE INC, CW & SONS INFRASTRUCTURE INC., CORENIC CONSTRUCTION GROUP LLC, Document Systems, Inc., CEDAR DELI. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 1220 12TH ST SE?
The Washington, DC roll records 145,117 sq ft of building area, a build year of 2002. It sits on a 97,384 sq ft lot.
What is the assessed value of 1220 12TH ST SE?
$33,987,570 on the Washington, DC roll. Assessed values are taxable-roll figures, not market prices.
What is the SSL for 1220 12TH ST SE?
SSL 10250812, site address 1220 12TH ST SE, Washington. It is the key to look the parcel up in the Integrated Tax System public extract (Washington, DC).
More around 1220 12TH ST SE
- Washington, DC office buildings· 1,761 buildings
- WASHINGTON GAS LIGHT CO· 2 properties
- UNIVERSAL HOME HEALTHCARE INC· tenant on record
- CW & SONS INFRASTRUCTURE INC.· suite G-60
- CORENIC CONSTRUCTION GROUP LLC· tenant on record
- Document Systems, Inc.· suite Suite 200
- 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 10250812.
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, “1220 12TH ST SE, Washington, DC (SSL 10250812)”, https://buildingcensus.com/offices/dc/office-building-eaadebb1 (data as of September 20, 2026).