Welcome to Corish Engineering Online. I am the proprietor, William P. Corish, P.E.

Corish Engineering provides mechanical engineering services. Our work is concentrated in two areas; industrial-grade piping systems and small, specialized building mechanical systems (i.e., HVAC, plumbing and fire protection).  We offer piping inspection, engineering and construction surveillance services to the petroleum, chemical, power, and pulp and paper industries, and to the federal government. Our building systems clients range from multinational corporations to private homeowners.

I am currently licensed to practice engineering in the following jurisdictions:

• The State of Maine
• The State of Maryland
• The Commonwealth of Virginia
• The State of West Virginia

If you have a project outside of these jurisdictions, it is still possible that Corish Engineering can serve you. Many states offer temporary licensure while an application for permanent licensure is processed.