The verdict in three sentences
For a London B2B website, a SaaS builder suits a simple brochure site, a freelancer fits a scoped project on a tight budget, and an agency fits a strategic site that must last and evolve. The sticker price lies: what matters is the total cost of ownership over 3 years, maintenance and evolutions included. The real trade-off is about risk (dependence on one person, scalability) as much as the euros spent.
Three models, three cost logics
The 2026 ranges (order of magnitude, London market) differ mainly in what they include: design, integration, technical SEO, maintenance.
| Criterion | SaaS / builder | Freelancer | Agency |
|---|---|---|---|
| Upfront cost | 0-500 EUR | 3,000-9,000 EUR | 8,000-25,000 EUR |
| Recurring cost | 20-100 EUR/mo | 0-150 EUR/mo | 300-1,200 EUR/mo (support) |
| Delivery time | 1-3 weeks | 3-7 weeks | 6-12 weeks |
| Customisation | Low to medium | Medium to high | High |
| Technical SEO included | Basic | Variable | Advanced |
| Bus factor | Vendor | High (one person) | Low (a team) |
| Scalability | Capped by plan | Depends on availability | Contractual |
A SaaS builder looks unbeatable at purchase, but hits a ceiling the moment the site must integrate a CRM, a client portal or multilingual landing pages.
Total cost over 3 years, the only honest view
Add upfront + recurring + a likely partial rebuild at 24 months. On that basis, the gaps narrow.
| Line item (3 years) | SaaS | Freelancer | Agency |
|---|---|---|---|
| Upfront | 300 EUR | 6,000 EUR | 16,000 EUR |
| Recurring (36 months) | 2,160 EUR | 1,800 EUR | 21,600 EUR |
| Evolutions / support | 1,500 EUR | 4,000 EUR | included |
| Downtime risk | Medium | High | Low |
| 3-year TCO | ~3,960 EUR | ~11,800 EUR | ~37,600 EUR |
The agency costs 3 to 9 times more, but absorbs maintenance, evolutions and the unavailability of a single person. For a site that generates qualified leads, that premium pays back fast.
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Mini case study
Thomas, marketing director of a B2B SaaS SME in London (18 staff), wants to rebuild a site expected to generate 40 leads/month. With a freelancer: 6,000 EUR upfront, but two-month waits for each change due to availability. With an agency: 16,000 EUR + 500 EUR/month support. If the new site lifts conversion from 1.2% to 2.1% on 3,000 visitors/month, he gains 27 extra leads per month. At 300 EUR margin per closed lead (1 in 10), that's 810 EUR/month net margin, so the agency pays for itself in under 24 months despite its apparent cost.
FAQ
Is a SaaS builder enough for a real B2B site? Yes for a 5-to-8-page brochure with no integration. As soon as you need a CRM connection, multilingual content or conversion funnels, you hit the plan ceiling and costs hide add-ons at 30-80 EUR/month each.
Is a freelancer really cheaper? At purchase yes, from 3,000 to 9,000 EUR. But the bus factor is maximal: illness, overload or departure and the site is stuck. Require a source-code handover clause and documentation.
How much is agency support? Budget 300 to 1,200 EUR/month depending on scope: hosting, security, fixes, minor evolutions. That retainer is what avoids surprise quotes for every change.
What is a realistic timeline for a B2B site in 2026? 1 to 3 weeks with SaaS, 3 to 7 with a freelancer, 6 to 12 with an agency. A longer agency timeline includes scoping workshops, technical SEO and QA, the guarantees of durability.
How do I avoid paying twice? Choose by horizon: if the site must live 3 years and evolve, go agency from the start. Starting on SaaS then migrating often costs the full rebuild on top.
Let's scope your project. Tell us your scope (page count, CRM integrations, multilingual needs), your indicative budget and target timeline, and we'll tell you honestly whether SaaS, freelancer or agency is the right call. 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.
