The verdict in three sentences
For a trade association with 2,400 member companies, the value of the website sits in the member area: restricted publications, directory, subscriptions and regulatory updates. Observed budgets run from roughly GBP 35,000 to 130,000 in London and EUR 40,000 to 150,000 in Brussels over 5 to 8 months, and the gap comes almost entirely from integration with the membership CRM and migration of 1,800 documents. A brief that separates the public core, the member area and integrations lets you compare bids on equal terms.
What the scope really includes
A national association publishes a lot: economic briefings, legal circulars, sector agreements, technical guides, committee minutes. The current site holds about 600 pages and 1,800 PDF documents, part of them restricted to members in good standing. On top of that sit a public member directory, a calendar of regional events and workspaces for some twenty committees. In Brussels, add the EU affairs layer: consultation responses, position papers and often a bilingual FR and EN or trilingual FR, NL and EN site.
| Module | Volume or rule | Access | Complexity |
|---|---|---|---|
| Corporate pages | 600 pages, 150 to rewrite | Public | Medium |
| Document library | 1,800 documents, metadata, full-text search | Public or members | High |
| Member directory | 2,400 listings, filters by trade and region | Public, data approved by member | Medium |
| Subscriptions | Renewal notice, online payment, certificate | Logged-in member | High |
| Committee workspaces | 20 groups, documents and calendar | Committee members | Medium |
| Events and registration | 60 to 80 events a year | Public and members | Low to medium |
| Newsletter and policy updates | 2 to 4 sends a month | Segmented by trade | Low |
What moves the budget by a factor of three is access control. If rights are read in real time from the membership CRM (subscription status, role in the company, committee), integration becomes the largest line of the project.
Observed budgets and cost lines
The figures below are 2026 orders of magnitude from tenders run by trade bodies in London and Brussels.
| Line item | Core version | Integrated version | Note |
|---|---|---|---|
| Discovery, UX and design | GBP 7,000 to 13,000 / EUR 8,000 to 15,000 | GBP 13,000 to 26,000 / EUR 15,000 to 30,000 | Workshops with staff and members |
| CMS and public core build | GBP 10,000 to 22,000 / EUR 12,000 to 25,000 | GBP 22,000 to 39,000 / EUR 25,000 to 45,000 | Editorial approval workflow |
| Member area and permissions | GBP 7,000 to 13,000 / EUR 8,000 to 15,000 | GBP 17,000 to 35,000 / EUR 20,000 to 40,000 | Membership CRM connection |
| Content and document migration | GBP 3,500 to 7,000 / EUR 4,000 to 8,000 | GBP 7,000 to 13,000 / EUR 8,000 to 15,000 | Triage, metadata, redirects |
| Accessibility, WCAG 2.2 AA | GBP 2,500 to 4,500 / EUR 3,000 to 5,000 | GBP 4,500 to 9,000 / EUR 5,000 to 10,000 | Strongly advised |
| QA, training, launch | GBP 4,500 to 6,000 / EUR 5,000 to 7,000 | GBP 6,000 to 9,000 / EUR 7,000 to 10,000 | Contributor training |
| Indicative total | GBP 35,000 to 65,000 / EUR 40,000 to 75,000 | GBP 70,000 to 130,000 / EUR 80,000 to 150,000 | Excluding annual support |
Support and hosting usually add 10 to 18% of the initial cost every year. WCAG compliance is not mandatory for every association, but a body that represents an industry and engages with government should build it in from the start: fixing it afterwards typically costs twice as much.
Kolonell handles this type of project within its institutional websites practice. Pricing is on request only, after a scoping workshop that sets modules, integrations and schedule.
A 5 to 8 month schedule and tender pitfalls
A credible plan allows 4 to 6 weeks of discovery, 6 to 8 weeks of design, 10 to 14 weeks of build and 4 to 6 weeks of migration, QA and training. Board approvals often add 2 to 4 weeks, so put them in the plan from the tender stage.
Three pitfalls keep coming up. The first is asking for a fixed price without supplying document volumes or a CRM export, so bidders price different assumptions. The second is forgetting URL redirects, which can cut organic traffic by 30 to 50% after launch. The third is underestimating internal time: a project lead on the association side at 30 to 40% of their time throughout is a minimum.
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Mini case study
James, chief executive of a construction trade association in London, still handles subscriptions by bank transfer and email. His team processes 2,400 renewals a year, at an average of 25 minutes each for chasers, reconciliation and certificates, or 1,000 hours a year. At GBP 35 an hour loaded, that is GBP 35,000 a year. With online payment and automatic certificates, he targets a 60% time saving, or GBP 21,000 a year. On a GBP 95,000 integrated project, this module alone covers more than a fifth of the investment over five years, before counting the retention value of restricted publications.
FAQ
Do we need a formal tender?
Not always for a private association, but a written brief sent to 3 to 5 agencies improves comparability. Supply page counts, document volumes and a CRM export.
Is WCAG compliance mandatory for a trade association?
It applies by law only to some bodies, but it is strongly advised. An initial audit costs roughly GBP 2,500 to 4,500 or EUR 3,000 to 5,000.
How long does migrating 1,800 documents take?
Allow 4 to 8 weeks with prior triage. In most associations, 30 to 40% of documents are obsolete and can be archived.
Can we keep our current membership CRM?
Yes, if it offers an API or regular exports. Syncing subscription status then becomes the main technical line.
How long from contract to launch?
Between 5 and 8 months for this scope, board approvals included. A two-stage launch, public core first then member area, is an option.
Let's scope your project. Share your sitemap, document volume and membership system, and we will scope modules, integrations and a 5 to 8 month schedule. 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.
