The verdict in three sentences
Between a partial redesign (4,000-9,000 EUR) and a full rebuild (12,000-30,000 EUR), the sticker price misleads: total cost of ownership should decide. An aging WordPress inflates maintenance by +30% and caps SEO, while a clean rebuild can deliver +15 to 25% organic traffic at 9 months. The tipping point is simple: beyond 40% of code to rewrite, rebuild.
Redesign vs rebuild: the real costs
The comparison is not just the quote. Here are the items that weigh over 3 years, as a 2026 order of magnitude.
| Item | Partial redesign | Full rebuild |
|---|---|---|
| Initial project cost | 4,000 - 9,000 € | 12,000 - 30,000 € |
| Annual maintenance | +30% (technical debt) | standard |
| SEO gain at 9 months | +0 to 5% | +15 to 25% |
| Lifespan | 2 - 3 years | 5 - 7 years |
| Lock-in risk | high | low |
| Timeline | 4-6 weeks | 8-12 weeks |
A partial redesign looks 3x cheaper, but if it lasts half as long and costs 30% more maintenance, the gap narrows sharply over a 3 to 5 year horizon.
The 6-criteria decision scoring grid
Score 0 (redesign) to 2 (rebuild) per criterion. A total above 7 leans clearly toward rebuilding.
| Criterion | Redesign (0) | Neutral (1) | Rebuild (2) |
|---|---|---|---|
| Code age | < 3 years | 3-5 years | > 5 years |
| Code to rewrite | < 20% | 20-40% | > 40% |
| Current performance | good | average | poor |
| SEO objective | stable | moderate | ambitious |
| Target scalability | low | medium | high |
| Available budget | tight | medium | comfortable |
A score of 0-4 justifies a redesign, 5-7 calls for fine arbitration, and 8-12 validates a rebuild. The decisive criterion stays the share of code to rewrite: beyond 40%, redesigning costs almost as much as rebuilding, without the benefits.
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Mini case study
Sarah, CFO of a services group in Rotterdam, hesitates between refreshing her 6-year-old WordPress site (redesign at 7,000 EUR) and starting over (rebuild at 20,000 EUR). Her grid score: age 2, code to rewrite 2, performance 2, SEO 2, scalability 1, budget 1 = 10/12. She projects: the rebuild costs 13,000 EUR more, but removes +30% maintenance (about 2,000 EUR/year saved) and targets +20% organic traffic. With traffic generating 40 leads/month at 150 EUR margin each, +20% = 1,200 EUR/month of new value. The extra cost is absorbed in 11 months, and the site lasts twice as long.
FAQ
How do I estimate the share of code to rewrite? A technical audit (1-2 days, 800-1,600 EUR) measures debt: obsolete dependencies, frozen custom theme, unmaintained plugins. It is the essential prerequisite to any decision.
Does a partial redesign hurt SEO? Rarely if URLs and structure are preserved. However, it caps gains: real traffic jumps come from a clean technical base.
Is a rebuild always more profitable long term? No. For a recent, performant, low-evolution site, a redesign stays the rational choice. Rebuilding wins when technical debt and SEO ambition are high.
How long does each option take? Allow 4-6 weeks for a partial redesign, 8-12 weeks for a full rebuild, content delivered on time.
Can I rebuild in phases? Yes, a progressive approach (page by page or section by section) smooths budget and risk, at the cost of a slightly longer overall timeline.
Let's scope your project. Tell us your site's age, SEO goals and budget: we run the scoring and decide with you. 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.