9 SEO Mistakes to Avoid During a Website Redesign

Overview

A website redesign feels like a fresh start. New look, clearer messaging, a platform that finally reflects where the business is today. For many service businesses, it is also the moment they unknowingly dismantle years of search how easy you are to find.

Rankings that took two or three years to build can disappear within weeks of a redesign going live. Enquiries drop. The phone gets quieter. And the connection between the redesign and the decline often takes months to spot.

The good news is that most of the damage is preventable. These nine mistakes account for the majority of SEO setbacks service businesses experience during redesigns.

1. Not auditing existing search positions before starting

Before touching the site, you need to know what is currently working. Which pages are search position? For which search terms? How much organic traffic are they receiving?

Without this baseline, you cannot protect what you have. A page that looks like a simple "About Us" page might be quietly driving a meaningful share of your organic leads. If it disappears in the redesign or its URL changes without a redirect, that traffic disappears with it.

Audit your existing organic results before any work begins. This shapes every decision that follows.

2. Changing URLs without implementing redirects

This is the most common and most damaging mistake. When a page moves to a new URL — even if the content is identical — Google treats it as a new page with no history. Any search position trust built up over time starts from zero.

The fix is straightforward: every old URL that changes needs a 301 redirect pointing to the new equivalent. This tells Google (and any user who clicks an old link) that the page has moved permanently, and transfers the historical value to the new address.

Failing to redirect even a handful of high-performing pages can have a significant impact on how easy you are to find.

3. Removing content that was doing SEO work

Design-led redesigns often strip out content in pursuit of visual simplicity. Blocks of text get replaced with short headlines and large images. Service descriptions get condensed to a single sentence.

The problem is that Google cannot read images. The written content on your pages is what communicates fit for specific searches. Remove too much of it, and pages that previously show uped well no longer have enough signal to maintain their position.

Clean design and sufficient content are not mutually exclusive — but achieving both requires deliberate planning.

4. Launching without checking indexability

A development website is typically kept hidden from search engines while it is being built. This is correct practice — you do not want Google indexing an unfinished site.

The mistake is forgetting to reverse this setting at launch. A single checkbox left in the wrong position can block Google from crawling the entire site. This has happened to businesses that then spend weeks wondering why their how easy you are to find has collapsed.

Before launch, confirm that the site is not blocking search engine robots. After launch, check Google Search Console to verify that pages are being indexed as expected.

5. Consolidating pages without considering SEO impact

Redesigns often bring a rationalisation of site structure. Multiple pages get merged into one. A page that covered three separate services becomes a single combined page.

Sometimes this is the right decision. Often it is not. If the individual pages were each search position for their own distinct search terms, merging them into one page means you are now trying to show up a single page for multiple distinct searches — which is significantly harder.

Before consolidating pages, check whether any of them have individual search position value. If they do, keep them separate.

6. Ignoring title tags and meta descriptions during the build

A redesign is an opportunity to revisit and improve the page titles and descriptions across the site. The title tags and meta descriptions that appear in search results influence both search positions and click-through rates.

What often happens instead is that the new site launches with default or auto-generated titles, duplicated page titles and descriptions across pages, or placeholders that were never updated. These issues are easy to overlook during a build focused on design and functionality.

Build a page titles and descriptions review into the launch checklist, not as an afterthought.

7. Switching platforms without migrating structured data

If the redesign involves moving to a new CMS or website platform, any structured data (search code markup) that existed on the old site needs to be rebuilt on the new one.

Schema markup — particularly LocalBusiness, Service, and FAQ search code — helps Google understand what your pages are about and can enhance how your listings appear in search results. Losing it during a platform migration is a common oversight that quietly reduces how easy you are to find.

8. Not setting up tracking before launch

It is easy to assume you will sort out analytics after launch. The consequence is a gap in your data during the critical period immediately after the site goes live — which is precisely when you most need to monitor what is happening.

Google Analytics and Google Search Console should both be configured and verified before the new site launches. If anything goes wrong in the first weeks, you need the data to diagnose it quickly.

9. Treating launch day as the finish line

A redesign does not end when the site goes live. The weeks following launch are when SEO issues surface: broken redirects, missing pages, crawl errors, drops in search positions.

Plan for a post-launch monitoring period of at least four to six weeks. Check Search Console for crawl errors regularly. Monitor your key search positions. Compare organic traffic against the previous period.

The businesses that protect their SEO through a redesign are the ones that treat launch as the beginning of a review phase, not the end of a project.

The Bigger Picture

Website redesigns create risk for SEO because they change the things Google has learned about your site. The more you change at once, the harder it is for Google to reorientate — and the greater the potential for unintended loss.

This does not mean redesigns should be avoided. It means they should be planned carefully, with SEO considerations built into the process from the start rather than bolted on at the end.