The verdict in three sentences
Switching platforms without an SEO plan risks losing overnight the 'used car + city' traffic that feeds your leads. A controlled migration at 5,000-11,000 EUR over 6-9 weeks rests on an exhaustive 301 redirect plan, a content freeze and post-launch monitoring. The 2026 goal: traffic loss under 5% and full recovery in 8-12 weeks.
The steps of a loss-free migration
A successful migration is won before launch. URL mapping and the redirect plan represent 40% of the work.
| Step | Goal | Risk if neglected |
|---|---|---|
| Crawl & URL inventory | Map every indexed page | Orphan pages, lost equity |
| 301 redirect plan | Map old to new | Massive 404 errors |
| Content freeze | Lock titles, text, linking | Uncontrolled variables |
| Pre-launch QA | Verify redirects, tags | Ranking drop |
| Switch & submission | Sitemap, Search Console | Slow re-indexing |
| 8-12 week monitoring | Detect and fix losses | Lasting losses |
2026 budget and milestones
Cost depends on the number of URLs and redirect complexity (vehicle pages, filters, old categories). Here are the 2026 ranges.
| Service | 2026 range (EUR) | Detail |
|---|---|---|
| Audit & URL inventory | 1,000 - 2,500 | Full crawl, prioritization |
| 301 redirect plan | 1,500 - 3,500 | Exhaustive mapping, testing |
| Pre-launch SEO QA | 1,000 - 2,000 | Tags, speed, mobile |
| Post-migration monitoring | 1,500 - 3,000 | 8-12 weeks of tracking |
| Emergency fixes | included | Recovery of detected losses |
Mini case study
Marc, director of a multi-brand dealership in New York, migrates a 3,200-URL site (used-car pages included) to a new platform. He invests 8,500 EUR over 7 weeks. Thanks to the 301 redirect plan and pre-launch QA, peak traffic loss is 4% in the second week, then traffic returns to its initial level within 9 weeks. Without a plan, a typical 30% drop would have lost about 900 qualified visits per month; with a generously margined average vehicle sale, avoiding just 2 lost sales per month more than covers the investment.
FAQ
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Can you migrate with zero traffic loss?
A slight transient loss is normal. The realistic goal is to stay under 5% at peak and recover within 8-12 weeks thanks to 301 redirects and monitoring.
Why freeze content during migration?
Because changing platform AND content at once makes it impossible to isolate the cause of a drop. Freeze first, optimize later.
Are 301 redirects enough?
They are the backbone, but you also need to handle tags, speed, mobile and resubmit sitemaps to Search Console.
How long does a migration take?
Between 6 and 9 weeks for a site of several thousand URLs, post-launch monitoring included.
What if traffic doesn't come back?
The 8-12 week monitoring detects orphan URLs and missing redirects; we fix them continuously until recovery.
Let's scope your project. Site of 500 to 10,000 URLs to migrate, indicative budget 5,000-11,000 EUR over 6-9 weeks, target loss under 5%: send us your current URL. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
