Businesses outgrow DIY builders in predictable ways. The design hits a ceiling, the pages load slowly, the SEO controls are shallow, and the monthly fee buys something you can never take with you. At some point the website is holding the business back and it's time to move.
The move itself is routine. The part that goes wrong is rankings, and it goes wrong for one reason: URLs change and nobody maps them.
Before you touch anything, take inventory
Export a list of every page on the current website with its exact URL. Pull analytics for the last twelve months and note which pages bring traffic and which produce enquiries. Check Search Console for the queries each page ranks for.
This inventory is the whole project. Without it you're guessing about what matters, and the pages that quietly bring in business are rarely the ones anyone would guess.
Keep URLs identical wherever you can
The safest migration changes nothing about the addresses. If a page lives at /services/roof-repair today, put it at /services/roof-repair on the new website. No redirect needed, no equity lost, nothing to break.
Builders sometimes force odd URL patterns you'll want to clean up. That's fine, but every change needs a redirect, so change only what's worth the trouble.
Map every old URL to a new one
For anything whose address does change, set up a 301 redirect from the old address to the closest equivalent page. A 301 tells search engines the page moved permanently and passes along most of its accumulated value.
Two rules. Redirect to the closest match, not to the home page — bulk redirects to the home page are treated as soft errors and pass nothing. And don't skip pages with no obvious equivalent; send them to the most relevant category page instead of letting them break.
Bring the content over properly
Copy the actual text, not a summary of it. Pages that rank are ranking for the words on them, and rewriting everything during a migration means changing two variables at once and losing the ability to tell which one caused a drop.
Keep page titles and meta descriptions unless they're genuinely bad. Keep heading structure. Re-upload images at proper sizes with their alt text intact.
Check before you flip the switch
Build the new website on a staging address that search engines can't index, then walk it: every page present, every form submitting, every redirect firing, images loading, headings and titles intact. Test the forms from a phone.
One thing to double-check before going live: staging websites are usually blocked from indexing, and that block must come off at launch. Forgetting it is the single most expensive migration mistake there is, and it can sit unnoticed for months.
Launch, then watch
Flip the DNS, then submit the new sitemap in Search Console and Bing Webmaster Tools. Watch coverage reports for a few weeks and fix crawl errors and unexpected 404s as they surface.
Expect a small dip for a week or two while everything is recrawled. That's normal. What isn't normal is a sustained drop, and that almost always traces back to a missing redirect or a stray noindex.
Don't cancel the old account immediately
Keep the builder subscription alive for a month after launch. If something turns out to be missing, having the original still running makes it a five-minute fix instead of an archaeology project.