The verdict in three sentences
For an engineering consultancy of 20 to 30 engineers in Rotterdam, a realistic budget for a credible website is EUR 8,000 to 16,000 excl. VAT in 2026. The value does not come from the design but from documented project references and proof of certification that clients check before inviting you to bid. A well-structured site generates, as a 2026 order of magnitude, 4 to 6 private tender invitations per year, which pays back the investment with the first contract won.
What your buyers look for before calling you
A private developer, a contractor or a public buyer does not read your home page. They look for three things: projects comparable to theirs, proof that you are qualified (ISO 9001, VCA, sector certifications) and an identified technical contact. An effective engineering website is a filterable reference database more than a brochure.
| Content | What the buyer checks | Impact on the invitation |
|---|---|---|
| 25 project reference pages | Structure type, budget, scope (design, detailing, survey) | High: proof of capacity |
| Certification page (ISO 9001, VCA, sector schemes) | Numbers, validity dates, PDFs | Eliminatory in public tenders |
| Team and technical organisation | Names, degrees, years of experience | Reassures on continuity |
| Downloadable PDF brochures | Printable format for the committee | Eases internal decision |
| Software stack (Robot, Tekla, Revit) | BIM compatibility | Frequent technical criterion |
| Qualified enquiry form | Project type, phase, deadline | Filters useless requests |
References are the core of the site. Each page should state the client (or client type if confidential), the construction value, the scope, one or two photos and a technical figure (span, floor area, basement levels). With 25 pages filterable by sector (housing, offices, industrial, infrastructure), a buyer finds a comparable project in 30 seconds.
2026 price grid in Rotterdam
The figures below are 2026 orders of magnitude observed for Dutch web agencies and remote agencies of equivalent level.
| Package | Scope | Price excl. VAT | Timeline |
|---|---|---|---|
| Essential | 8 pages, 10 references, simple form | EUR 8,000 | 5 weeks |
| Standard | 15 pages, 25 filterable references, certifications, brochures | EUR 11,500 | 7 weeks |
| Advanced | Standard + bilingual NL/EN + press area | EUR 14,000 | 8 weeks |
| Complete | Advanced + interactive project map + careers | EUR 16,000 | 9 weeks |
| Annual maintenance | Updates, security, backups | EUR 1,200 to 2,400 | Ongoing |
| Reference copywriting | 25 pages by a technical writer | EUR 2,500 to 3,750 | 3 weeks |
The most underestimated item is writing the references: count EUR 100 to 150 per page if the agency interviews your project leads. Doing it in-house actually costs more, because an engineer billed at EUR 60 per hour spends 3 hours per page.
Typical 7-week schedule
| Week | Step | Deliverable |
|---|---|---|
| 1 | Scoping workshop with management | Sitemap and list of 25 references |
| 2 | Key page mock-ups | Home, reference page, certifications |
| 3 | Collection of site photos and data | Validated reference table |
| 4 and 5 | Development and integration | Site on staging |
| 6 | Writing and technical proofreading | Content validated by project leads |
| 7 | Testing, local SEO, go-live | Site live, Google Search Console |
The critical path is almost always collecting photos and construction values. Appoint an internal owner in week one.
Mini case study
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Thomas, managing director of a structural engineering consultancy in Rotterdam (25 engineers, EUR 3.2 million turnover), picks the Standard package at EUR 11,500 plus EUR 3,000 of copywriting, i.e. EUR 14,500 excl. VAT. Within 12 months the site generates 5 qualified private invitations. He wins 2, for combined fees of EUR 68,000 with a 15 % net margin, i.e. EUR 10,200 of margin. The site pays back in 17 months on these contracts alone, not counting public tenders where a link to the references replaces heavy PDF appendices.
FAQ
How much does an engineering consultancy website cost in Rotterdam in 2026?
Between EUR 8,000 and 16,000 excl. VAT depending on the number of references, languages and features. The most requested package, with 25 references and certification pages, sits around EUR 11,500.
Should references show construction values?
Yes when the client agrees, at least as a range (for example EUR 2 to 5 million). Buyers filter by project size first, and a reference without a value loses about half of its evidential weight.
Does the site help with public tenders?
It does not replace the bid file, but it serves as verifiable proof. Certifications with validity dates avoid clarification requests, which often delay evaluation by 10 to 15 days.
How long until go-live?
Count 7 weeks for the Standard package, provided photos and data for the 25 projects arrive before week 4. Late collection adds 2 to 3 weeks on average.
What budget after launch?
EUR 1,200 to 2,400 excl. VAT per year for maintenance, plus 5 to 8 new references per year, about EUR 800 of copywriting.
Let's scope your project. Send us your reference list and certifications: we price an engineering website between EUR 8,000 and 16,000, delivered in 7 weeks. 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.
