Website Redesign: Process, Costs and SEO Checklist

In short: A website redesign, often called a relaunch, rebuilds an existing website: design, structure, technology and content are renewed together. Done well, the new site generates more enquiries than the old one. Skip the SEO part and it loses visibility you already had. The most important safeguard is a permanent redirect from every old URL to the matching new one; Google recommends keeping them for at least one year.

This guide covers when a redesign pays off, the six phases, the most expensive mistakes and what to check before, during and after launch. Last reviewed: October 2026.

What is a website redesign?

In a full redesign, an existing website is rebuilt from the ground up. Usually several layers change at once: the design, the page structure, the content management system (CMS) and often the content and URLs of individual pages.

That is different from a visual refresh, which mainly updates the look, and a targeted improvement, which upgrades individual pages, copy or enquiry routes. Not every dated website needs a complete rebuild.

When a redesign pays off

A redesign makes sense when several of these apply:

• The website brings few or no enquiries, even though people visit.
• It looks poor on mobile or loads slowly.
• You cannot update content yourself and need help for every small change.
• The system is outdated, unmaintained or causes security issues.
• Your offer or audience has changed and the website still tells the old story.
• The website is barely found on Google or in AI answers.

If the foundations are sound, a targeted improvement is often faster and cheaper than a rebuild.

The process in six phases

1. Audit and goals

Record what the current website achieves: which pages get search traffic, which have links from other websites, and where enquiries come from. Google Search Console and your web analytics provide the data. Also define how you will measure success, for example qualified enquiries per month.

2. Plan structure and content

Plan the new page structure around your customers' questions and search terms. Decide for every old page whether it stays, is reworked, merged with another page or removed. Only drop pages with search traffic or links for a good reason.

3. Design and build

Only now do design and development start: mobile first, fast, accessible and with a CMS that lets you update content yourself. SEO and AI search foundations such as clean headings, metadata and structured data belong in from the start, not as an afterthought.

4. Create a redirect plan

Map every old URL to the most relevant new URL. Google recommends permanent server-side redirects (301 or 308) without long chains and advises keeping them for at least one year. Do not send everything to the home page, because individual pages lose their relevance and rankings that way.

5. Test before launch

Check the new site in a staging environment: forms and confirmations, tracking, mobile layout, loading speed and internal links. Make sure search engines cannot index the staging site, for example with a password or noindex, and that this block is removed on the live site.

6. Launch and follow-up

Put the new website live together with all redirects. Submit the new sitemap in Search Console and watch error pages, indexing and rankings over the first weeks. Fluctuations are normal: according to Google, it can take a few weeks or more for a medium-sized site's new URLs to replace the old ones in search results.

SEO checklist for your redesign

Before launch

• Export of all old URLs with search traffic, links and enquiries
• Complete old-to-new redirect plan without chains
• Titles, descriptions and headings of the new pages reviewed
• Structured data matching the visible content
• Forms, tracking and thank-you pages tested
• Staging environment blocked for search engines

On launch day

• Redirects live and spot-checked
• noindex and staging password removed from the live site
• robots.txt and sitemap checked, new sitemap submitted in Search Console
• Internal links pointing directly to the new URLs

In the first weeks

• Monitor 404 errors and redirect errors in Search Console
• Check indexing of the most important pages
• Compare rankings and enquiries with the period before the redesign
• Keep redirects in place for at least one year

Common redesign mistakes

• No redirects or blanket redirects: old URLs end on error pages or all on the home page.
• Redirect chains: an old URL hops through several steps before reaching the target.
• Indexed staging site: the test version appears on Google and competes with the real website.
• Forgotten noindex: the new site is live but blocked for search engines.
• Deleted content with search traffic: good guides or service pages disappear without an equivalent.
• Broken enquiry routes: forms or tracking stop working after launch.

From practice: our own relaunch

When we rebuilt conradiusdesign.com in summer 2026, we moved the old URLs to the new structure with permanent redirects. A check in October 2026 shows that all 68 old URLs with impressions in Search Console land on a working new page; none ends on an error page.

How much does a website redesign cost?

A redesign often costs about as much as a new website, sometimes more, because content has to be moved and redirects planned. At Con Radius, a redesign starts at EUR 3,000, and a straight migration without a new design, for example from Webflow to Payload, at EUR 2,000. The number of pages, languages and features determines the quote. For a detailed overview, read our guide How much does a website cost?.