Can an engineer redesign a foundation after construction has already started?

Yes, though it’s genuinely disruptive and adds cost — if an unexpected ground condition is found once excavation begins, your engineer can revise the design in response, but this typically pauses work until the new design and any required re-certification is finalised.

This is exactly the kind of scenario a genuine contingency budget helps absorb, since it’s a real (if uncommon) possibility on any project.

Related Questions, Guides & Calculators