You typically need a structural engineer when altering, extending or assessing a building. This includes removing load-bearing walls, installing steel beams, building extensions or loft conversions, constructing new buildings, or investigating cracks and movement. Structural engineers are also required for structural calculations submitted to Building Control or for planning and insurance purposes. Engaging a structural engineer early in a project can help identify potential issues, reduce construction risk and avoid costly changes later. Even for smaller domestic projects, professional structural advice ensures safety, compliance and peace of mind.