The verdict in three sentences
If the technical base is sound, a design refresh (7,000 to 14,000 EUR, 5-7 weeks) is enough; if technical debt is heavy, a full rebuild (15,000 to 28,000 EUR, 8-12 weeks) pays off better over 3 years. The trigger signals for a rebuild are clear: LCP > 4 s, unmaintained CMS, traffic drop > 30 %. The decision rests on 3-year TCO, not the initial quote.
The decision matrix
Refreshing means keeping the core and redoing the skin; rebuilding means starting over on a modern architecture. Each path has its cost, timeline and use case.
| Criterion | Refresh | Full rebuild |
|---|---|---|
| 2026 budget | 7,000 - 14,000 EUR | 15,000 - 28,000 EUR |
| Timeline | 5 - 7 weeks | 8 - 12 weeks |
| Technical base | Sound, maintained | Obsolete / blocking |
| Core Web Vitals gain | Moderate | Strong (LCP, INP) |
| SEO / URL overhaul | Partial | Complete |
| Regression risk | Low | Medium (redirects) |
| Lifespan | 2 - 3 years | 4 - 6 years |
The rebuild trigger signals
Rather than intuition, objective signals tell you a simple refresh will not cut it. If you tick 3 boxes or more, a rebuild is warranted.
| Signal | 2026 alert threshold | Consequence |
|---|---|---|
| LCP (Core Web Vitals) | > 4 s mobile | SEO penalty, bounce |
| Technical debt | Obsolete framework / plugins | Vulnerabilities, maintenance cost |
| Unmaintained CMS | No vendor updates | High security risk |
| Organic traffic drop | > 30 % over 12 months | Pipeline loss |
| Cannot add a feature | Recurring technical blocker | Business drag |
| Dated design | > 5 years unchanged | Credibility loss |
3-year TCO
The initial quote misleads: a cheaper refresh on a fragile base costs more in maintenance and will need redoing sooner. Let us compare total cost of ownership.
| 3-year line item | Refresh | Rebuild |
|---|---|---|
| Initial project | 11,000 EUR | 21,000 EUR |
| Maintenance (450 EUR/mo) | 16,200 EUR | 16,200 EUR |
| Technical-debt overruns | 5,000 - 10,000 EUR | ~0 EUR |
| Early re-redesign | likely year 3 | no |
| Estimated 3-year TCO | 32,200 - 37,200 EUR | 37,200 EUR |
On a fragile base, the refresh catches up to the rebuild on total cost while delivering worse performance: the rebuild becomes the rational choice.
Amsterdam vs Lyon: the benchmark
| Criterion | Amsterdam 2026 | Lyon 2026 |
|---|---|---|
| Design refresh | 7,000 - 14,000 EUR | 6,000 - 12,000 EUR |
| Full rebuild | 15,000 - 28,000 EUR | 12,000 - 22,000 EUR |
| Rebuild timeline | 8 - 12 weeks | 8 - 12 weeks |
Mini case study
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Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Sanne, leader of a services SME in Amsterdam (30 employees), sees a 35 % organic traffic drop and a 4.6 s mobile LCP on a WordPress site loaded with obsolete plugins. A refresh would cost 11,000 EUR, a Next.js rebuild 21,000 EUR.
She ticks 4 trigger signals (LCP, debt, traffic drop, CMS). Over 3 years, the refresh would reach ~34,000 EUR TCO (overruns + likely re-redesign) versus ~37,200 EUR for the rebuild, but with sub-2 s LCP and double the lifespan. She picks the rebuild: 3,200 EUR more for a site twice as durable and clean SEO.
FAQ
How do I know if my technical base is sound?
A technical audit (400-800 EUR) checks the framework, dependencies, security and Core Web Vitals. If everything is up to date and fast, a refresh is enough.
Does a rebuild lose my SEO?
Not if 301 redirects are handled correctly and the URL structure is preserved or improved. A botched rebuild can, conversely, crater traffic: demand an SEO migration plan.
How long does a site last today?
A refresh lasts 2-3 years before looking dated; a rebuild on modern architecture (Next.js) lasts 4-6 years. Design ages faster than technology.
What is the most critical signal?
The combination of LCP > 4 s + traffic drop > 30 %. It signals a structural problem design alone will not fix: the most reliable rebuild signal.
Can I rebuild in stages?
Yes, a phased approach (page by page or section by section) spreads budget and risk, useful for high-traffic sites that cannot switch over all at once.
Let's scope your project. Send us your current URL and metrics (traffic, Core Web Vitals): we will tell you refresh or rebuild, with a costed budget (7,000-28,000 EUR) and TCO. 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.