Professional Engineering Firms

A professional engineering firm is a company whose engineering work is performed and signed off by licensed Professional Engineers (P.E.s). In most states the firm itself must also hold a Certificate of Authorization (COA) to offer engineering services, and a designated P.E. in responsible charge oversees stamped deliverables.

Licensed PE services are engineering services delivered under the responsible charge of a Professional Engineer licensed in the project's state. Deliverables — drawings, calculations, reports — carry the P.E.'s seal and signature, making the engineer legally accountable for the work to the state board and AHJ.

A civil engineering firm designs the built environment outside of buildings — sites, roads, utilities, stormwater, grading, and land development — and coordinates with municipalities, utilities, and surveyors. Most civil deliverables that touch public infrastructure or permitting require a P.E. stamp.

A structural engineering firm designs the load-carrying systems of buildings and structures — foundations, framing, lateral systems — to resist gravity, wind, seismic, and other loads. Structural drawings submitted for building permits are almost always P.E.-stamped.

A mechanical engineering firm designs HVAC, plumbing, process piping, and equipment systems for buildings and industrial facilities. For commercial and institutional projects, mechanical CDs typically require a P.E. seal.

An electrical engineering firm designs power distribution, lighting, low-voltage, and grounding systems, and produces short-circuit and arc-flash studies. Most permitted electrical designs above residential scale require P.E.-stamped drawings.

An environmental engineering firm handles permitting, environmental impact studies, water and air quality, remediation, and regulatory compliance — often producing sealed reports submitted to state and federal agencies.

An engineer earns a P.E. license by graduating from an ABET-accredited program, passing the Fundamentals of Engineering (FE) exam, completing 4+ years of qualifying experience under a licensed P.E., and passing the Principles and Practice of Engineering (PE) exam. The license is granted by a state board and must be renewed with continuing education. Firms typically also need a state Certificate of Authorization to practice.

Stamped (P.E.-sealed) drawings are typically required for any engineering work submitted to a building department, utility, transportation authority, or other Authority Having Jurisdiction — including structural, civil, mechanical, electrical, fire protection, and many environmental and telecom submittals. Confirm specific requirements with the AHJ before design starts.

Confirm (1) an active Certificate of Authorization in the project's state, (2) a P.E. engineer of record on staff with directly relevant discipline and project-type experience, (3) reference projects of similar scope and complexity, and (4) E&O insurance limits appropriate to your project's risk. Verify the firm and the named P.E. on the state board's license lookup.