The verdict in three sentences
A successful B2B migration is won before go-live, in the audit and the 301 redirect plan, not on launch day. Budget 4,500-9,000 USD for the full migration plus a pre-migration SEO audit, over an 8-to-12-week timeline. Without a redirect plan, the documented risk is a -40% organic traffic drop that takes 6 to 12 months to recover.
What you actually pay: the work-package breakdown
A migration is never a single line item. It is a sum of packages, each protecting your rankings. Here are 2026 ballpark figures for the Lagos market.
| Package | Scope | 2026 USD range | Timeline |
|---|---|---|---|
| Pre-migration SEO audit | Full crawl, URL mapping, top pages | 800 - 1,800 | 1-2 wks |
| Architecture & design | New stack, mockups, UX | 1,200 - 2,400 | 2-3 wks |
| Development & content migration | Pages, media, metadata | 2,000 - 4,000 | 3-4 wks |
| 301 redirect plan | Old/new mapping, 404 tests | 600 - 1,300 | 1 wk |
| 90-day post-launch monitoring | Ranking tracking, fixes | 500 - 1,000 | 3 months |
| Hosting + CDN | Monthly infrastructure | 60 - 150 / month | ongoing |
The most underestimated package is the 301 redirect plan: every indexed legacy URL must point to its equivalent, or Google loses the accumulated signal.
The cost of inaction: quantifying the risk
Migrating without method often costs more than the migration itself. Here is the impact of a botched cutover for a lead-generating B2B site.
| Scenario | Organic traffic at 90d | Leads/month lost | Est. indirect cost |
|---|---|---|---|
| Migration with full 301 plan | -5 to 0% | 0-2 | Negligible |
| Migration without 301 plan | -40% | 8-15 | 4,000+ USD |
| Migration without prior audit | -55% | 12-20 | 7,000+ USD |
| Poorly planned DNS cutover | 24-72h downtime | 404 spike | reputation + SEO |
Recovery KPIs to track: 404 rate (< 0.5%), positions of the top 20 keywords, weekly organic traffic vs baseline, and load time (LCP).
Mini case study
Mr. Okafor, managing director of an industrial-equipment SME in Lagos, runs a 120-page site generating 14 qualified leads per month via search. Chosen quote: audit 1,500 USD + migration 6,000 USD + 90-day monitoring 900 USD = 8,400 USD. Without a 301 plan, a 40% traffic loss would have cost about 6 leads/month; at an average margin of 600 USD per signed contract (10% conversion), that is 3,600 USD of lost margin every month. The audit investment pays for itself in under three weeks of protected traffic.
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FAQ
How long before my traffic recovers after migration?
With a full 301 redirect plan, traffic stays stable from week one (-5 to 0% fluctuation). Without one, recovery takes 6 to 12 months.
Should I keep my old URLs?
Ideally yes: keeping the URL structure removes all risk. If change is unavoidable, every old URL needs a 301 redirect to its closest equivalent.
Is a CDN essential in Lagos?
Yes for a B2B site serving regional clients: a CDN cuts latency and improves LCP, a ranking factor. Budget 60 to 150 USD/month depending on traffic.
Can we migrate with zero downtime?
Yes, with a DNS cutover scheduled outside business hours and a double-run period. A 24-72h downtime creates an SEO-damaging 404 spike.
Is the pre-migration SEO audit really necessary?
It is the package that divides the drop risk by ten. It maps your high-traffic pages and guarantees none disappear without a redirect.
Let's scope your project. Tell us your page count, current stack and deadline: we will price the migration, the 301 plan and the 90-day monitoring. 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.
