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7 signs it is time to rebuild your website

Speed, mobile, conversions, security, content: the signals that tell you when to rebuild — and when an optimisation is enough.

FL
By [ First Last ]Software architect · Paris
PublishedNovember 4, 2026
[ Cover image — 2400×1200 ]

When should you rebuild your website? There is no fixed lifespan — some sites stay effective for six years, others are outdated in two. The right moment shows in concrete signals. If you recognise three or more below, a redesign is worth studying.

The 7 signs

  1. It is slow: poor Core Web Vitals on most pages
  2. It works badly on mobile, where most traffic now comes from
  3. Enquiries are falling while traffic holds
  4. Your team cannot update it without a provider
  5. It no longer reflects your offer
  6. The technology is no longer maintained: old CMS, abandoned plugins, unsupported PHP
  7. It is isolated from your tools: leads re-keyed into the CRM, products re-keyed from the ERP
The right time to rebuild is when your site costs you more in workarounds than it brings in leads.

Full redesign or optimisation?

One or two signals can often be fixed without rebuilding. From three signals — or as soon as the technology is unsupported — a redesign usually pays off. See redesign or new site and website redesign cost.

When to redesign a website: FAQ

How long does a website last?

Many sites are rethought every three to five years; a well-maintained site lasts longer.

Can a full redesign be avoided?

Yes, if the technology is sound — targeted optimisation is sometimes enough.

Assess your site

Our website redesign agency in Paris starts every project with an audit. Take the 2-minute audit or talk to an expert.

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