A new website is not a fresh start in Google’s eyes. It is a change to something Google already understands, and every change carries a risk it reads the new version as worse than the old one.

Handled well, a launch lifts your rankings. Handled carelessly, it can erase years of earned authority in a fortnight. The difference is almost entirely in the details covered here. Part one covered the pre-launch checks; this is what happens after.

Why do rankings sometimes drop after a new site launches?

Because Google has to re-evaluate a site it thought it knew. If your URLs changed without redirects, the ranking those pages held has nowhere to transfer to. If content was trimmed in the redesign, the keywords that content ranked for can simply vanish. If the new site is slower, or structured so Google struggles to read it, that shows up in position.

A short dip while Google recrawls is normal and recovers. A sustained drop is a signal something broke, and the earlier you catch it, the cheaper it is to fix.

Redirects are the thing that matters most

If you take one idea from this: a 301 redirect passes ranking from an old URL to a new one. Without it, the old page 404s and its authority evaporates.

Map every old URL to its closest new equivalent. Not the homepage for everything, which is a lazy shortcut Google treats as a soft 404. Redirect a page about a service to the new page about that service. Where there is no equivalent, send it to the most relevant category, not the front door.

Then test them. A redirect chain, old URL to a second URL to a third, leaks authority at every hop and slows the page. One redirect, straight to the destination.

Did you keep the content that was ranking?

Redesigns love to cut words. Cleaner, more whitespace, less text. The problem is that the text you cut may be exactly what a page ranked for.

Before launch, know which pages bring in search traffic and what they rank for. Then make sure the new versions still cover that ground, reworded and better, but not gone. Losing a top-ranking page’s substance in the name of a cleaner design is the quiet way redesigns lose traffic, and the owner usually blames the launch itself rather than the missing 600 words.

Have you told Google about the new site?

You do not have to wait to be found. Speed the recrawl:

Submit the new sitemap in Google Search Console. If you migrated to a new domain, use the Change of Address tool as well, since it tells Google the move is deliberate.

Keep both properties in Search Console if the domain changed, so you can watch the old one shed impressions as the new one gains them. That handover is exactly what you want to see, and its absence is an early warning.

Re-check your structured data. Schema often does not survive a rebuild: the new page builder emits it differently, or not at all. Validate that your key pages still carry the markup that made them eligible for rich results, because a launch is precisely when it silently disappears.

What about AI search and local?

The same foundations that protect your Google rankings protect your visibility in AI answers: clear structure, valid schema, and business details that agree everywhere. A migration is a common moment for those details to drift: an address written two ways, an old phone number left in a footer. Inconsistent details make an AI tool less confident to name you, so AI visibility and local search both depend on getting this tidy at launch.

How long until it settles?

Expect a few weeks of movement while Google recrawls and re-evaluates. Watch Search Console rather than refreshing your rankings hourly. If impressions recover and climb, the launch worked. If they keep falling past three or four weeks, something is wrong, most often redirects, lost content or a technical block, and it is fixable if you catch it.

A launch should be a step up. Done properly, a faster, clearer, better-structured site earns more than the one it replaced. That is the whole point of building a new one, and it is what our SEO and development work is built to protect.

Missed part one? The pre-launch checklist is here.

Frequently asked questions

Planning a launch or a migration? Book a free strategy session and we will make sure it is a step up, not a step back.