Why a website can cost so much1,500 for a freelancer, 6,000 in a branchor25 000€ for a corporate project?
In 2026, the price of a website will depend on10 key factors. Understanding these elements will help you :
- assess whether a quote is coherent,
- avoid pitfalls,
- define a realistic budget,
- make an informed choice between WordPress, Webflow, Astro or custom.
Here's a clear, practical guide to what really makes a price change.
1. Number of pages
The more pages a site contains, the longer it takes to design, integrate and optimize.
Examples:
- 5 pages → 1 500€ - 3 000€
- 15 pages → 3 500€ - 7 000€
- 30 pages → 8 000€ - 15 000€
Each additional page can represent+€100 to +€500depending on its complexity (detailed service, optimized landing page, local SEO page...).
2. Design level (template vs. custom)
This is one of the most decisive factors.
Template
- fast
- economic
- limited → ideal for small budgets
Design sur-mesure
- unique experience
- high conversion level
- strong consistency with branding → +30 to +80% on the final price
Design often represents40% of total budget a professional website.
3. Functional complexity
The more advanced features a site offers, the higher the bill.
Features that add cost :
- reservation system → €1,000 to €3,000
- customer space / B2B portal → +€2,000 to +€8,000
- advanced forms → +€300 to €1,200
- product configurator → +€2,000 to +€10,000
- automations (emails, workflows) → +€500 to +€4,000
- AI chatbot → +€1,000 + monthly subscription
This brings us closer to a mini software application, not a simple site.
4. Integrated SEO (from basic to advanced)
Basic SEO (included in 90% of projects)
- structure correcte
- title tags
- performance acceptable
Advanced SEO
- keyword study
- logical architecture
- optimized writing
- thematic clustering
- Core Web Vitals optimization
Additional cost :+€1,000 to +€6,000
A site designed to rank costs more... but earns more.
5. Multilingualism
Adding a language doesn't double the price - but it does multiplies from +20% to +40%.
Why?
- more pages,
- duplications,
- Specific URLs,
- Multilingual SEO,
- design consistency,
- structural work.
Example:
- FR site: €4,000
- Site FR + EN + NL : 6 000€ - 11 000€
6. External integrations (CRM, ERP, accounting)
Each technical connection costs between1,000 and €4,000 according to :
- aPI quality,
- the level of documentation,
- the desired synchronization,
- number of calls (stock, customers, orders, etc.).
Common examples:
- CRM (HubSpot, Pipedrive)
- ERP (Odoo, SAP)
- accounting (Exact, WinBooks)
- e-mailing (Brevo, Klaviyo)
7. Performance (Core Web Vitals)
In 2026, performance is no longer optional: it influences SEO, conversions and credibility.
Butget a 90+ site on Lighthouse request :
- asset optimization,
- clean architecture,
- javaScript reduction,
- optimized images,
- hosting performant.
This is one of the reasons why Numinam usesAstrowhich generates ultra-fast websites.
Additional effort: +15% to +40% of budget.
8. The choice of technology
| Technology | Benefits | Cost |
|---|---|---|
| WordPress | economical, flexible | € |
| Webflow | premium design, low maintenance | €€ |
| Shopify | ideal e-commerce | €€ |
| Astro (Numinam) | ultra fast, top SEO, secure | €€€€€ |
| Sur-mesure headless | scalable, unlimited | €€€€ |
The more modern & efficient the technology → the higher the quality → the higher the initial cost. But the long-term costdiminue (reduced maintenance, fewer bugs, better performance).
9. Type of service provider (freelance, agency, expert studio)
Freelance
- economic
- limited skills
- disponibilité variable
Typical price: €1,000 - €4,000
Generalist agency
- good structure
- services multiples
- sometimes slow
- not always a tech expert
Typical price: €3,000 - €12,000
Studio expert (Numinam)
- performance
- modern stack (Astro, AI)
- ROI-driven
- premium quality
Typical price: €4,000 - €20,000
10. Maintenance, support and evolution
A website isnot a one-off cost. Recurring costs also influence the starting price.
Maintenance 2026 :
- WordPress: €100 - €500/month
- Webflow: €20 - €80/month
- Astro (Numinam): 0€ - 150€/month (very low, no server vulnerabilities)
- Upgrades: €500 - €5,000/year depending on ambitions
→ For more details: Recurring website costs (/cout-maintenance-site-web)
Examples of budgets by type of company in Belgium
Freelance
1 500€ - 3 000€: Simple site + basic SEO
SMEs (10 to 50 employees)
3 000€ - 8 000€: Professional website + SEO + customized design
Established SME / B2B
8 000€ - 20 000€: Advanced SEO + performance + integrations
Large companies
20 000€ - 50 000€+: Complex architecture + multilingual + customized
Mistakes to avoid
- choose solely on the basis of price,
- underestimate SEO,
- forget evolution costs,
- neglect performance,
- choose WordPress out of habit, not strategy.
Working with Numinam: what does it change?
Numinam develops websites:
- ultra-fast (Astro),
- optimized for SEO right from the design stage,
- designed for conversion,
- secure (no server faults),
- scalables,
- withIntegrated AI when it brings real value.
Typical budget :3 000€ - 15 000€
→ Request a free audit : contact@numinam.com
