The verdict in three sentences
If your website is less than 4 years old, runs on a still-maintained CMS and passes Core Web Vitals, a cosmetic redesign of EUR 4,000 to 10,000 is enough. If you have accumulated technical debt, an LCP above 4 s, abandoned plugins and rising maintenance costs, a full rebuild (EUR 12,000 to 30,000) pays off better over 24 months. The rule: don't pay twice to repair a foundation that will have to be replaced anyway.
Cosmetic redesign or rebuild: the real comparison
The two options differ in both price and timeline. Here are the 2026 orders of magnitude observed in the Toronto market for a 15-to-30-page B2B website.
| Criterion | Cosmetic redesign | Full rebuild |
|---|---|---|
| Indicative budget | EUR 4,000 - 10,000 | EUR 12,000 - 30,000 |
| Timeline | 3 - 6 weeks | 8 - 14 weeks |
| CMS kept | Yes | No (often migration) |
| Performance gain | Low to medium | High (LCP cut by 2-3x) |
| SEO risk | Low | Medium (301 plan required) |
| Estimated lifespan | 2 - 3 years | 5 - 7 years |
| Maintenance cost/year | EUR 1,200 - 2,400 | EUR 800 - 1,800 |
A cosmetic redesign reworks the design, brand and a few templates without touching the architecture. A rebuild rethinks the sitemap, technical foundation and performance: it's the only path when technical debt blocks any evolution.
The costed decision grid
Score each criterion. From 6 points out of 10, a rebuild becomes the rational option.
| Warning signal | Weight | What to check |
|---|---|---|
| Site older than 4 years | 2 pts | Date of last redesign |
| LCP above 4 s (mobile) | 2 pts | PageSpeed Insights, field data |
| Unmaintained CMS or theme | 2 pts | Vendor's last update |
| More than 15 plugins/extensions | 1 pt | Attack surface, conflicts |
| Not responsive or mobile bugs | 1 pt | 60% of traffic is mobile |
| Maintenance above EUR 2,000/year | 1 pt | Last 12 months of invoices |
| Cannot edit without an agency | 1 pt | Editorial autonomy |
Below 6 points, a targeted redesign protects your budget. Above it, every euro invested in the old foundation is lost in the medium term.
Mini case study
Thomas, marketing director of an industrial SME in Toronto, is unsure about a WordPress site from 2018. Grid score: 8-year-old site (2), LCP at 5.1 s (2), abandoned premium theme (2), 22 plugins (1), maintenance EUR 2,700/year (1) = 8 points. The rebuild at EUR 18,000 pays off against a cosmetic redesign of EUR 7,000 that would need redoing in 2 years. Over 5 years, the rebuild costs 18,000 + 5 x 1,300 = EUR 24,500; the redesign followed by an inevitable rebuild costs 7,000 + 18,000 + maintenance = more than EUR 35,000. The choice is clear.
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FAQ
How much does a B2B website redesign cost in 2026?
Expect EUR 4,000 to 10,000 for a cosmetic redesign and EUR 12,000 to 30,000 for a full rebuild. The price depends on the number of pages, integrations and expected level of animation.
Does a redesign hurt SEO?
A cosmetic redesign keeps the URLs and carries almost no risk. A rebuild requires a 301 redirect plan and a prior audit to avoid a 20-40% traffic loss.
How long does a full rebuild take?
Between 8 and 14 weeks for a 15-to-30-page B2B website, depending on content maturity and the speed of internal approvals.
Do I need to change CMS during a redesign?
Not always. You keep the CMS if it's still maintained and fast; you migrate to headless or Next.js when performance and security demand it.
How do I know if my site has too much technical debt?
If you can no longer update without breaking pages, if Core Web Vitals are in the red and if maintenance exceeds EUR 2,000/year, the debt is probably critical.
Let's scope your project. Send us your current URL and your main goal (SEO, conversion, brand): we'll compute the decision score and an indicative budget. 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.
