Structural Engineer
A licensed professional engineer who analyzes and designs structural systems to ensure buildings safely carry their intended loads.
A structural engineer (SE) is a licensed engineer who specializes in analyzing forces—gravity, wind, seismic, snow—and designing structural systems that safely carry those loads. For residential renovations, an SE is typically engaged when load-bearing walls are removed, large openings are created, additions are built, foundations need repair, or decks are designed to carry significant loads.
The SE produces stamped drawings specifying beam sizes, post sizes, footing dimensions, and connection details. These drawings are submitted with the permit application and used by the contractor to execute the structural work. The building inspector relies on the engineer's stamp as assurance that the design is sound.
Hiring an SE typically costs $500–$2,500 for residential scopes, depending on complexity. This cost is almost always worthwhile because an undersized beam or footing can cause catastrophic damage costing tens of thousands of dollars to repair. Some jurisdictions require an SE stamp for any permitted structural work.
Real-World Example
Before removing the kitchen wall, the homeowner hired a structural engineer for $900 to specify the LVL beam and post sizes needed to safely span the 14-foot opening.