How long does a Laravel version upgrade take?

A single version upgrade (Laravel 11 to 12, Laravel 10 to 11) on a healthy codebase typically takes 1 to 3 weeks. A two version jump (Laravel 9 to 11, Laravel 10 to 12) takes 3 to 6 weeks because intermediate breaking changes accumulate. A larger jump (Laravel 8 to 11 or 12, Laravel 7 to 11) takes 6 to 12 weeks and is essentially a migration project. Older applications (Laravel 5.x, 6.x) sometimes benefit from a strangler fig migration rather than a direct upgrade. We share a concrete timeline after the upgrade audit.