The verdict in three sentences
A multilingual corporate website redesign for a mid-market company costs between 18,000 and 45,000 EUR (excl. VAT) in 2026, driven by the design system, RGAA accessibility and multiple languages. Budget 10 to 14 weeks and maintenance of 250 to 600 EUR/month. The real ROI lever is not the design but editorial governance: publishing faster, without a developer, through a validation workflow.
What drives up the corporate budget
A corporate site is not an inflated showcase: it carries multilingual content, restricted areas, accessibility compliance and content governance. Each added language increases build and QA cost. RGAA accessibility (effectively mandatory for many public and large-account buyers) often represents 8-15% of the budget but avoids legal risk.
| Line item | 2026 range (EUR excl. VAT) | Comment |
|---|---|---|
| Design system + UI | 5,000 - 12,000 | reusable, key to ROI |
| CMS build | 5,000 - 13,000 | headless recommended |
| Multilingual FR/EN/DE | 3,000 - 7,000 | ~1,500 EUR per language |
| RGAA accessibility | 2,000 - 6,000 | audit + fixes |
| Governance + training | 1,500 - 4,000 | validation workflow |
| QA + launch | 1,500 - 3,000 | multi-environment |
Proprietary CMS vs headless
The CMS choice shapes the long-term budget. WordPress remains the fastest to start and cheapest to set up; Strapi (headless) costs a bit more to build but offers security, performance and better multilingual handling.
| Criterion | WordPress | Strapi (headless) |
|---|---|---|
| Initial build cost | 5,000 - 9,000 EUR | 8,000 - 13,000 EUR |
| Monthly maintenance | 250 - 450 EUR | 300 - 600 EUR |
| Performance (CWV) | good if optimized | excellent |
| Native multilingual | plugin | native |
| Security | needs hardening | strong |
| Content publishing time | baseline | -40% |
Mini case study
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Sophie, marketing director of a mid-market industrial company in Lille (180 employees, 3 subsidiaries). Her team averages 3 hours to publish a trilingual news item on the old site, about 24 hours per month for 8 posts. She invests 34,000 EUR (excl. VAT) in a redesign with a design system and headless CMS. Publishing time drops to 1h45 per item, i.e. 14 hours per month instead of 24: a saving of 10 hours/month, about 120 hours/year. Valued at 45 EUR/loaded hour, that is 5,400 EUR/year of recovered time, on top of fewer back-and-forths with the agency.
FAQ
Why does a corporate redesign often exceed 20,000 EUR? Multilingual content, RGAA accessibility and editorial governance multiply complexity compared to a simple showcase. Each language adds build, QA and coordination.
Is RGAA mandatory for a private SME? It is legally required mainly for the public sector and large players, but targeting RGAA remains strategic: it improves SEO, widens the audience and reassures public buyers.
How much to add a fourth language later? With a well-structured headless CMS, budget 1,200 to 2,500 EUR per extra language, mostly for content integration and QA. A poorly designed CMS can double that cost.
Is a design system really worth it? Yes: it is the line item that reduces future evolution costs. Every new page or campaign reuses existing components, halving build time.
Which client-side team is needed? Plan for an internal project lead, one content owner per language and a final approver. Without clear governance, timelines stretch by several weeks.
Let's scope your project. Tell us your number of languages, preferred CMS and indicative budget, and we'll frame the corporate redesign. 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.
