The verdict in three sentences
A good brief doesn't describe a solution, it describes a measurable problem and quantified goals. Without one, you get quotes from 4,000 to 25,000 EUR that are impossible to compare, because each vendor imagines a different project. With one, offers converge and you choose on value, not on the cheapest misunderstanding.
The 8 essential sections
A B2B website brief fits in 6 to 12 pages. Here's the structure that makes 2026 quotes comparable.
| Section | Expected content | Impact on the quote |
|---|---|---|
| Context & goals | Who, market, quantified goals (leads/month) | Frames ambition |
| Targets & personas | 2-3 decision-maker profiles | Drives UX and tone |
| Sitemap | Page list, hierarchy | Sizes the volume |
| Features | Forms, multilingual, blog, client portal | Most variable line item |
| Design & identity | Existing brand or to be created | +1,500 to 6,000 EUR if created |
| SEO & content | Keywords, who writes | +2,000 to 8,000 EUR if writing included |
| Tech & hosting | Preferred CMS, GDPR, performance | Frames maintenance |
| Budget & timeline | Range and target date | Filters vendors |
Tip: give a budget range. The myth of "if I hide my budget I'll get a better price" mostly produces off-target quotes and mutual wasted time.
Budget ranges and selection criteria
Calibrate your ambition before consulting. 2026 orders of magnitude for a B2B website.
| Ambition | Typical scope | Budget (EUR) |
|---|---|---|
| Essential site | 5-7 pages, form, responsive | 4,000 - 8,000 |
| Advanced site | + blog, SEO, multilingual, analytics | 8,000 - 15,000 |
| Premium site | + animations, client portal, integrations | 15,000 - 25,000 |
To rank agencies, weight: sector references (25%), methodology and timeline (20%), quality of proposed design (20%), price (20%), maintenance and support (15%). Price alone should never weigh more than 25%.
Mini case study
Sophie, director of a 22-person HR consultancy in Manchester, receives three quotes: 6,500, 12,000 and 21,000 EUR. Panic: how to compare? She rewrites her need as a brief (8 sections, 9 pages, half a day's work).
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Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Result: the 6,500 EUR quote excluded copywriting (billed 4,000 EUR extra) and multilingual; the 21,000 EUR quote included a client portal she doesn't need. Once scopes are aligned, the real gap drops to 9,500 vs 11,000 EUR. Negotiation time saved: about 3 weeks, and a 4,000 EUR surprise avoided.
FAQ
Do I need a brief for a small site?
Yes, even a short one. Two structured pages are enough for a 5,000 EUR site and prevent the misunderstandings that cost thousands of euros in rework.
Should I state my budget in the brief?
Yes, as a range (e.g. 8,000-12,000 EUR). It immediately filters out off-target vendors and lets the others propose the best scope for your envelope.
Who writes the site content?
Decide this explicitly. Professional copywriting runs 2,000 to 8,000 EUR depending on volume; forgetting it in the brief is the leading cause of quote spread.
How many vendors should I consult?
Three to four is enough. Beyond that, evaluation time outweighs the gain, and you dilute the quality of exchanges with each candidate.
Let's scope your project. Send us your brief (or your raw notes): we'll structure it and return a clear-scope quote. 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.
