# Washington D.C. — US boiler and pressure vessel inspection requirements by state

For Washington D.C., state is Washington D.C; governing body is Department of Buildings; statute citation is District of Columbia Code, Division 1, Title 2, Chapter 1, and DCMR Title 17, Chapter 4 and Title 12, Chapter 10E; power boiler inspection interval is annual internal inspections; low-pressure boiler inspection interval is annual external inspections (cast-iron boilers), recorded from its source on 2026-08-05.

- **State:** Washington D.C.
- **Governing body:** Department of Buildings _(verified: appears in the quote below)_
- **Statute citation:** District of Columbia Code, Division 1, Title 2, Chapter 1, and DCMR Title 17, Chapter 4 and Title 12, Chapter 10E _(verified: appears in the quote below)_
- **Power boiler inspection interval:** annual internal inspections _(verified: appears in the quote below)_
- **Low-pressure boiler inspection interval:** annual external inspections (cast-iron boilers)
- **Accepted inspector types:** Department inspectors conduct all first inspections regardless of insurance status. For subsequent inspections, commissioned insurance company inspectors _(verified: appears in the quote below)_

## What the source says

> Governing body: The Department of Buildings administers inspections under District of Columbia Code, Division 1, Title 2, Chapter 1, and DCMR Title 17, Chapter 4 and Title 12, Chapter 10E. Authorized inspector types: Department inspectors conduct all first inspections regardless of insurance status. For subsequent inspections, Washington, D.C., accepts commissioned insurance company inspectors. Inspection frequency: High-pressure steam boilers require annual internal inspections. Low-pressure cast-iron boilers require annual external inspections.

## Source

- https://www.chardonlabs.com/resources/commercial-boiler-inspection-regulations-by-state/

Last verified: 2026-08-05. Review by: 2027-08-05.
Part of [US boiler and pressure vessel inspection requirements by state](https://referencesource.org/boiler-inspection-requirements-by-state/).