The verdict in three sentences
A new website for a private clinic group in Amsterdam costs roughly 25,000 to 70,000 EUR in 2026 and takes 12 to 22 weeks, with the specialist directory, bilingual content and health data rules driving most of the effort. A testable specification, with counts of specialists, forms, locations and a named accessibility level, narrows agency quotes dramatically. Decide early whether the site collects health data itself or hands patients to an existing booking or patient portal, because that single choice changes the security, hosting and legal budget.
Specification template, section by section
A useful spec runs 15 to 25 pages. Here is the structure, with typical values for an Amsterdam group.
| Section | What to fill in | Measurable example |
|---|---|---|
| Context | Locations, specialties, patient mix | 4 clinics, 18 specialties, 35 % international patients |
| Goals | 12 month outcomes | 40 % of intake requests started online |
| Languages | Scope per language | Dutch for all pages, English for 80 % including all specialist profiles |
| Specialist directory | Fields, filters, update owner | Name, specialty, location, languages, BIG number, booking link |
| Booking | Integrate or hand off | Deep link to existing patient portal, no local storage |
| Forms | List and recipients | 6 to 10: contact, referral, second opinion, careers, press, complaint |
| Content governance | Who writes, who signs off | Medical director approves every treatment page |
| CMS roles | Permissions | 4 roles: group, clinic, communications, read only clinician |
Regulatory requirements written as acceptance criteria
Healthcare sites are judged on compliance as much as design. Each line below should come with a test the agency must pass at handover.
| Requirement | Testable wording | Budget impact (2026 estimate) |
|---|---|---|
| BIG register | Every clinician profile shows a BIG number checked against the public register before publishing | 1,000 to 3,000 EUR for workflow and checks |
| GDPR health data | Special category data only via the patient portal, explicit consent recorded if any form asks for symptoms | 2,000 to 6,000 EUR |
| Hosting | EU hosting, NEN 7510 or ISO 27001 certified provider if health data is stored | 200 to 700 EUR per month |
| Accessibility | WCAG 2.1 AA, audit on 15 key templates, public accessibility statement | 3,500 to 9,000 EUR |
| Security | CSP headers, MFA on CMS, daily backups, annual penetration test | 2,000 to 5,000 EUR |
| Performance | LCP under 2.5 seconds on mobile | Included if specified upfront |
The structuring decision is booking. Linking to the patient portal your specialists already use avoids storing health data on the website and typically saves 10,000 to 18,000 EUR in build and certified hosting. A custom module only makes sense for unusual journeys, such as day surgery with online pre admission.
Running the agency tender
Invite three to five agencies, allow three weeks, and require answers in your template's order: method, phased plan, named team, healthcare references, and price per lot (platform, directory, accessibility, maintenance). Score with weights: 35 % understanding of need, 25 % three year total cost, 20 % regulatory experience, 20 % schedule.
Mini case study
Illustrative example: Sanne, communications lead at a four clinic group in Amsterdam, first received quotes from 22,000 to 85,000 EUR because agencies were guessing the scope. After writing the spec (120 specialists, 8 forms, portal hand off, WCAG 2.1 AA, Dutch and English), five answers landed between 34,000 and 48,000 EUR. Choosing the portal link over a custom booking module saved 14,000 EUR of build and about 4,800 EUR a year in certified hosting, roughly 28,400 EUR over three years.
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FAQ
What does a clinic group website cost in Amsterdam in 2026?
Budget 25,000 to 70,000 EUR for four locations and 60 to 200 specialists. The directory, bilingual content and booking choice explain most of the spread.
Do we need to show BIG registration numbers?
Showing the BIG number on each profile is a strong trust signal, and checking it against the public register before publishing protects the group. Building that check into the editorial workflow costs around 1,000 to 3,000 EUR.
Does the website itself have to meet NEN 7510?
Only if it stores or processes health data. If forms hand patients to a certified portal, standard EU hosting with GDPR safeguards is usually enough.
How long will the project take?
Plan 12 to 22 weeks, including 3 to 5 weeks of medical sign off on treatment pages. Add three weeks for the tender itself.
How many agencies should we invite?
Three to five, scored on a 100 point weighted grid. Beyond five, evaluation time often exceeds ten working days with little gain.
Let's scope your project. Send us your draft spec, even partial, with your number of locations and specialists, and we will return a lot by lot estimate, a 12 to 22 week plan and the compliance choices to settle. 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.
