Website redesign: when to do it, and how to protect your SEO

A redesign is the riskiest moment in a website's life. You replace something that works, however poorly, with something new. And there is a very common way to lose everything overnight without anyone noticing for weeks.

The real signs you need a redesign

‘It looks old’ is not one. A dated website that generates calls is worth more than a modern one that generates none. These are the reasons that actually justify the expense.

• It is unreadable or unusable on a phone. This is by far the strongest reason, since most visits come from mobile.
• You cannot change anything without calling someone. A website nobody dares touch becomes frozen, and a frozen website deteriorates.
• The technology is no longer maintained. An abandoned CMS or obsolete version becomes a security vulnerability that will never be fixed.
• It is slow and nothing helps. If the images have been optimised and it is still slow, the problem is structural.
• Your offer has changed. The website describes work you no longer do, or leaves out what now earns your income.

The step almost everyone gets wrong

The redirect plan. It is what separates a successful redesign from a silent disaster, and it is usually discovered too late.

Here is what happens without it. Your old /our-services/plumbing page took three years to rank. The new website calls it /services/plumbing-repairs. The old address returns an error. Google removes it from the index, the new one starts from scratch and every link from another website now leads nowhere.

Traffic does not collapse on the first day, which makes diagnosis difficult. It fades over six to ten weeks, by which point everyone has forgotten the redesign.

How to do it properly

• First, export from Search Console the list of pages receiving impressions or clicks. This is the value you have built, and the only list that matters.
• For each address on the list, decide its destination on the new website. One address, one destination, never a lazy redirect to the homepage.
• Set up these mappings as permanent 301 redirects. A 302 does not pass authority in the same way, making it a quiet, expensive mistake.
• On launch day, test around thirty old addresses manually. Each should arrive on the right page without going through a chain of three redirects.
• Resubmit the sitemap in Search Console and monitor the indexing report for six weeks.

What to keep from the old website

A redesign is not a clean slate. Three things deserve to be carried over unchanged.

The addresses of pages that work. If /our-services/plumbing ranks well, keep that address on the new website. Even the best redirect is less effective than needing no redirect at all.

The copy that ranks. A well-ranked page earns its place because it answers something. Rewriting it completely in the name of modernity is a reliable way to lose what worked.

The domain name. Changing the domain and website at the same time doubles the risk and makes diagnosis impossible. If both are necessary, do them two months apart.

How long it takes

For the same scope, a redesign takes longer than a new build because it adds two tasks: taking stock of the existing website and preparing redirects. Allow four to eight weeks for a business website and three to six months for ecommerce.

After launch, expect two to six weeks of fluctuation as rankings move, sometimes downwards. That is normal: Google is reassessing. What is not normal is failing to recover after two months.

The alternative people forget to offer

Many redesigns should never have happened. Before rebuilding everything, assess what a refresh could achieve: improving copy on the five most-visited pages, optimising images, fixing mobile display and adding missing service pages.

It often costs ten times less, takes two weeks and puts no search visibility at risk. If it is not enough, a redesign remains possible, and at least you will know exactly what you expect from it.