The verdict in three sentences
In 2026, a website migration without SEO loss in Montreal costs between 2,600 and 7,200 CAD depending on URL volume and the complexity of the target CMS. The crux is the exhaustive 301 redirect plan: done right, it keeps traffic loss under 10% over 4 weeks. Full recovery typically arrives in 6 to 12 weeks, provided a rigorous post-launch SEO QA.
What a controlled migration costs
Price depends mostly on the number of URLs to map and redirect, and on the old site's technical debt. Here are the 2026 ranges.
| URL volume | Complexity | Service | 2026 Price (CAD) |
|---|---|---|---|
| < 100 URLs | Simple marketing site | Audit + redirects + QA | 2,600 - 3,600 |
| 100 - 500 URLs | Blog + medium catalog | Mapping + 301 + 4-wk follow-up | 4,000 - 5,500 |
| 500 - 2,000 URLs | Medium e-commerce | Advanced mapping + deep QA | 5,500 - 7,200 |
| Pre-migration audit only | Crawl + redirect plan | Deliverable + roadmap | 1,000 - 2,000 |
| Post-launch SEO QA | 4-week verification | Follow-up + fixes | 1,300 - 2,600 |
An e-commerce merchant with several hundred product pages typically sits between 4,000 and 7,200 CAD depending on mapping precision.
The checklist that protects your traffic
A failed migration shows within 2 weeks: ranking drops, 404 errors, collapsing indexation. Here are the critical steps and their effect.
| Step | Action | Risk if skipped | Timing |
|---|---|---|---|
| Full pre-crawl | Map every URL | Massive 404s | D-15 |
| 301 mapping | Old URL -> new | Loss of SEO equity | D-7 |
| Preserve tags | Title, meta, Hn, canonical | Ranking drop | D-7 |
| Sitemap + robots | Regenerate and submit | Slowed crawl | D-day |
| Post-launch QA | Check 301, 404, indexation | -30 to -50% traffic | D+1 to D+28 |
| Search Console monitoring | Track errors and rankings | Undetected drift | 6 - 12 wks |
Acceptable traffic loss is under 10% the first week; beyond 20%, there's a redirect problem to fix urgently.
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Mini case study
Marc runs an outdoor-gear e-commerce site in Montreal, 640 URLs, 45,000 visits/month. He migrates from Prestashop to a headless CMS. He invests 5,200 CAD (301 mapping + 4-week QA). Week 2, traffic dips -8% (versus -35% expected without a plan). Week 9, it's back at +4% above the initial level thanks to the performance gain. On e-commerce revenue of 115,000 CAD/month, containing the loss to 8% instead of 35% preserved roughly 31,000 CAD of revenue over the transition: the controlled migration paid for itself 6 times over.
FAQ
How much does a website migration without SEO loss cost in 2026? Between 2,600 and 7,200 CAD by URL volume. A simple marketing site is 2,600-3,600 CAD; an e-commerce site with several hundred pages is 4,000-7,200 CAD.
What traffic loss is normal after a migration? A loss of under 10% over 4 weeks is normal and recovers. Beyond 20% signals a redirect problem to fix immediately.
How long to recover traffic? Full recovery typically takes 6 to 12 weeks after launch, the time Google needs to recrawl and reindex all the new URLs.
Is the 301 redirect plan really essential? Yes, it's the most critical element. Without exhaustive old-to-new URL mapping, you lose accumulated SEO equity and generate 404s that crater rankings.
Do I need post-launch SEO QA? Absolutely: budget 1,300 to 2,600 CAD to verify redirects, tags and indexation over 4 weeks. It's the insurance that protects the entire migration investment.
Let's scope your project. Send us your current CMS, URL volume and target CMS: we'll price migration and QA (2,600 to 7,200 CAD). 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.
