Either model can produce good work. The practical difference is usually capacity, communication structure, specialist coverage and continuity.

A redesign can preserve useful structure; a rebuild is often cleaner when the platform, code or content model is the main constraint.

A one-time project separates the build from optional care, while a subscription usually combines access, platform and service costs.

A builder can be useful for speed and self-service; a custom website can offer more control over structure, implementation and handover.