The verdict in three sentences
For an engineering consultancy bidding on public and private contracts, the website first serves to reassure a client or lead architect in under two minutes, between reading the bid and making the shortlist. A realistic 2026 budget is 6,000 to 14,000 EUR excl. VAT, a decisive share of which goes to structuring 20 to 40 project case studies filterable by building type, value and scope. Plan 6 to 8 weeks, provided photos, client references and credentials are gathered before kick-off.
What really weighs in a bid shortlist
The managing partner of a 35-engineer building services and structural consultancy usually sees the same problem: case studies sit in bid PDFs, scattered and never up to date. Yet a public buyer hesitating between three consortia checks websites to confirm experience on comparable projects. The site should therefore follow the logic of a technical proposal.
| Content | What it proves | Recommended format | Impact on shortlisting |
|---|---|---|---|
| Project case studies | Experience on comparable projects | Construction value, client, scope (design, supervision, advisory), year, photo | Very high |
| Professional qualifications (OPQIBI in France, Chamber of Engineers in Germany) | Recognised technical competence | List of qualifications with validity dates | High |
| Quality certifications (Qualibat, ISO 9001) | Capacity and quality assurance | Logo, number, downloadable certificate | High |
| Team and resources | Ability to meet deadlines | Headcount per discipline, BIM software, lead engineer CVs | High |
| Expertise pages (MEP, structure, energy performance) | Scope of services | One page per discipline with 3 linked projects | Medium to high |
| Careers | Team stability | Openings, staff stories, career paths | Medium |
| Site news | Recent activity | 1 to 2 posts per month | Low to medium |
The filter by building type (housing, offices, healthcare, education, industry) and by construction value is the most useful feature: it lets an architect find your last five schools above 3 million euros in one click.
2026 budget: three website levels
| Item | Essential | Standard | Complete |
|---|---|---|---|
| Sitemap and key page copywriting | 1,000 EUR | 1,800 EUR | 2,500 EUR |
| Custom design | 1,500 EUR | 2,500 EUR | 3,500 EUR |
| Development and CMS | 2,000 EUR | 3,000 EUR | 4,000 EUR |
| Filterable case study module | 800 EUR (20 entries) | 1,500 EUR (30 entries) | 2,200 EUR (40 entries + map) |
| Careers pages and online application | 400 EUR | 700 EUR | 1,000 EUR |
| Local and technical SEO | 300 EUR | 500 EUR | 800 EUR |
| Total excl. VAT | 6,000 EUR | 10,000 EUR | 14,000 EUR |
Recurring maintenance and hosting cost 60 to 180 EUR excl. VAT per month. A photo shoot of 4 to 6 completed buildings adds 800 to 1,500 EUR and often makes the difference against site photos taken on a phone.
Recruitment, the website's second job
In 2026 an experienced building services engineer commands roughly 45,000 to 55,000 EUR gross a year in southwest France and somewhat more in Berlin (order of magnitude), and hiring through a recruiter costs 15 to 20% of that salary. A careers page showing projects, BIM tools and career progression reduces reliance on recruiters. Add a short application form and job postings structured for Google for Jobs.
Mini case study
Philippe, managing partner of a 35-engineer building services and structural consultancy in Toulouse, picks the standard level at 10,000 EUR excl. VAT, plus 1,200 EUR of photography. He answers 60 tenders a year with an 18% success rate, about 11 contracts. If better-presented case studies add 2 points to the success rate, he wins one more contract a year. With average fees of 45,000 EUR and a 20% margin, the gain is 9,000 EUR a year. If he also avoids one recruiter-led hire (about 8,500 EUR), the website pays for itself in under a year. The same arithmetic applies to a Berlin firm of similar size.
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
FAQ
Can we publish the construction value of our projects?
Generally yes, since awarded public contracts are published. For private clients, ask for consent or show a range, such as 2 to 5 million euros.
How many case studies do we need at launch?
Twenty well-documented entries are enough to start, prioritising the building types you target. Then add 1 to 2 entries a month, about 30 minutes of CMS input each.
Should qualification certificates be downloadable?
It is recommended: a buyer checking a qualification saves time. Update the PDFs at each renewal, typically every 4 years with an annual review for OPQIBI.
Can the website generate case study sheets for our bids?
Yes, a PDF export per entry or per selection costs 800 to 1,500 EUR excl. VAT as an option and avoids maintaining two separate reference databases.
Is six to eight weeks realistic?
Yes if content is ready. In practice, collecting photos and project data often adds 2 to 3 weeks.
Let's scope your project. Send us your project list and credentials: we price B2B websites between 6,000 and 14,000 EUR excl. VAT, delivered in 6 to 8 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.
