The verdict in three sentences
For a service SME in Toronto whose website dates from 2019, a visual redesign costs 5,000 to 10,000 EUR and a full rebuild 12,000 to 25,000 EUR (about 5,400 to 27,000 USD). If the CMS has not been updated for more than 2 years or plugins are abandoned, technical debt makes the redesign more expensive over time than the rebuild. Either way, preserving URLs or redirecting them properly keeps about 80% of SEO traffic.
Redesign or rebuild: what each option covers
A redesign keeps the technical base (CMS, hosting, content database) and changes the interface, journeys and copy. A rebuild starts from a fresh base: new CMS or framework, new data structure, migration of useful content.
| Criterion | Visual redesign | Full rebuild |
|---|---|---|
| 2026 budget (service SME) | 5,000 to 10,000 EUR | 12,000 to 25,000 EUR |
| Timeline | 6 to 8 weeks | 10 to 14 weeks |
| Technical base | Kept | New |
| Performance (Core Web Vitals) | Limited gain, 10 to 30% | Strong gain, often 2 to 3 times faster |
| SEO risk | Low | Medium, controlled with a redirect plan |
| Expected lifespan | 2 to 3 years | 5 to 6 years |
| Annualized cost | 2,500 to 3,300 EUR per year | 2,400 to 4,200 EUR per year |
Annualized cost is the number that matters: a cheap redesign on a fragile base gets redone twice as often.
Technical debt signals that call for a rebuild
Several objective signals tip the decision. Beyond three red flags, a rebuild is almost always more profitable.
| Signal | 2026 alert threshold | Consequence |
|---|---|---|
| CMS version | No major update for more than 2 years | Unpatched security holes |
| PHP version | Below 8.1 | Hosts charging for extended support or cutting service |
| Abandoned plugins | More than 3 unmaintained plugins | Conflicts at every update |
| Hard-coded theme edits | Custom code in the parent theme | Every update overwrites changes |
| Mobile load time | Over 4 seconds | Loss of 20 to 40% of mobile visitors |
| Accessibility score | Below 70/100 | Exposure under Ontario AODA requirements |
| Maintenance cost | Over 1,500 EUR per year in fixes | The site costs more than it earns |
Protecting SEO: the URL rule
The main fear for owners is losing Google traffic. Botched migrations drop organic traffic by 30 to 60% for 3 to 6 months. A well-run migration limits the dip to 10 to 20%, and traffic returns within 8 to 12 weeks.
The essential steps:
- Full URL inventory with traffic and backlinks, from Search Console.
- Keep the URLs that drive traffic whenever the new structure allows it.
- Page-to-page 301 redirects for all others, never a mass redirect to the homepage.
- Carry over title tags, H1s and content that already rank.
- Daily monitoring of 404 errors and rankings for 30 days after launch.
With this protocol, keeping about 80% of SEO traffic in the first month is a realistic target, and exceeding it by month three thanks to performance gains.
Mini case study
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Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Daniel, owner of a 12-person HR consulting firm in Toronto, runs a 2019 WordPress site: PHP 7.4, 5 abandoned plugins, 5.2 seconds mobile load time. The site draws 2,400 visits a month but now produces only 4 contact requests, versus 11 in 2021. An average engagement brings him 6,500 EUR in margin.
Two quotes: redesign at 8,000 EUR or rebuild at 18,000 EUR. With 5 of 7 red flags, the redesign would force another project within 2 to 3 years. He chooses the rebuild with a redirect plan. Six months later, the site converts 9 requests a month. At a 20% close rate, he wins 1 more engagement per month, or 6,500 EUR in monthly margin: the investment pays back in under 3 months.
FAQ
Can we keep WordPress in a rebuild?
Yes, a rebuild can start from a fresh WordPress install with a clean theme and maintained plugins. Another CMS or a framework mainly makes sense beyond 50 pages or with business features.
How much traffic is lost during a migration?
With a complete redirect plan, the dip stays at 10 to 20% for 8 to 12 weeks. Without one, it can reach 30 to 60% and last six months.
Is a redesign enough if only the design is the problem?
Yes, if the base is up to date, fast (under 2.5 seconds) and free of abandoned plugins. In that case, 5,000 to 10,000 EUR delivers a solid result.
Who should write the new content?
Content remains the first conversion driver. Plan 1,500 to 4,000 EUR for professional copywriting of 10 to 20 pages, or 3 to 5 days of internal work.
What timeline should we plan?
Allow 6 to 8 weeks for a redesign and 10 to 14 weeks for a rebuild, approvals included. Avoid launching in late December, when teams and monitoring are thin.
Let's scope your project. Audit of your current site, redesign or rebuild decision, redirect plan: we price your project between 5,000 and 25,000 EUR with a 6 to 14 week plan. 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.
