When a website really needs a redesign — and when it does not
'The site looks dated' is a poor reason to redesign. A good reason is a measurable problem that cannot be fixed in place.
Genuine reasons
The site does not work on phones: layout breaks, elements overlap, forms are unusable. If mobile was never planned, patches rarely fix it.
The technology is so dated that every change needs a developer and costs money — a site where adding a page requires code constantly throttles marketing.
The business changed: different services, audience or positioning, so the old structure now works against you.
Load speed cannot be optimised because of the architecture, for example a heavy builder carrying a dozen plugins.
When it is not needed
Boredom is not a business problem. If the site produces leads, the risk of losing working conversion outweighs the gain.
Few leads on a technically sound site is usually a traffic and content question, not a decoration one, and a full redesign may change nothing but the budget.
Fixes short of a rebuild
Rewrite the hero, publish prices, shorten forms, change button copy, add reviews and case studies. These take days and often move the numbers.
Optimise speed by compressing images, removing unused scripts and configuring caching — cheaper than a redesign and it helps rankings too.
Migrating without losing traffic
List every current URL and its traffic before starting. Any address that changes needs a 301 redirect, or accumulated rankings reset.
Keep the text of pages that earn organic traffic; replacing an informative page with a pretty three-line one reliably drops positions. Before launch verify robots.txt, sitemap, titles, structured data and hreflang, then watch Search Console daily for two weeks.