The short answer: redesign when the bones are good — sound structure, real content, clean code — and only the look has dated. Rebuild when the problems are structural: a template or page-builder origin, pages that stay slow no matter what you optimise, content that was never written for your business, invisibility on Google that no tweak has fixed. Dated looks are a paint problem. Everything else on that list is a construction problem, and paint does not fix construction.
What each one actually is
A redesign keeps your site’s foundations — structure, content, platform — and renews the design layer over them. It is the right call more rarely than the industry admits, because it assumes the foundations were professionally built in the first place. A rebuild starts from research and a blank page: what should this site say, to whom, in what order — then new content, new design, new hand-built pages, with the old site’s URLs and rankings migrated across carefully rather than abandoned.
Restyling a template is repainting a house with a cracked foundation. It photographs well.
The decision test
Ask three questions. Where did the site come from? If it began life as a purchased theme or a page-builder, a rebuild is almost always the honest recommendation — the defects you cannot see (bloated code, empty search internals, unresearched content) are the ones a redesign preserves. Is it doing its job? A site that looks dated but ranks and converts needs far less than one that looks fine and produces silence. And has optimisation already failed? If someone competent tuned it and it is still slow or invisible, you have your answer — the ceiling is the construction.
The part everyone underestimates: migration
Whichever you choose, the dangerous step is the move. Every existing URL must be mapped to its new home with proper redirects, the pages that earn rankings identified and preserved, and the switchover tested — or years of accumulated Google standing can vanish in a weekend. This is where cheap projects quietly destroy value, and it is why “who handles the migration, and how” is a better vendor question than “what does it cost.”
On cost: because research and content dominate the work either way, a proper rebuild rarely costs much more than a deep redesign done honestly — and it is the only option that removes the defects rather than repainting them. We are a senior-led studio working remotely with businesses worldwide; send us your site and we will tell you which one it needs, before any money changes hands.
Send us your current site. A senior developer will look and reply within one working day: redesign, rebuild, or neither.