The verdict in three sentences
For a construction group, the site must serve three goals at once: showcase projects (site portfolio), attract candidates (careers hub) and reassure public buyers (contract references). In 2026, a redesign costs 12,000 to 30,000 EUR depending on whether you unify subsidiaries into a multi-site architecture or keep separate sites. The multi-site architecture costs more upfront but halves maintenance and strengthens the group's brand consistency.
Unified multi-site vs separate sites: the comparison
| Criterion | Separate sites | Multi-site architecture |
|---|---|---|
| Price 2026 (excl. VAT) | 12,000 - 18,000 EUR | 22,000 - 30,000 EUR |
| Timeline | 10-12 weeks | 12-16 weeks |
| Brand consistency | Weak | Strong (shared design system) |
| Annual maintenance | 3,000 - 6,000 EUR | 1,800 - 4,800 EUR |
| Content management | Fragmented | Centralised (one back office) |
| Recruitment | Per subsidiary | Unified group portal |
| Best if | Very autonomous subsidiaries | Group seeking unity |
Separate sites make sense when each subsidiary has a strong, distinct brand. The unified multi-site wins for a group that wants to speak with one voice to public buyers and centralise recruitment.
Key modules and costs
| Module | Role | Indicative cost 2026 |
|---|---|---|
| Site portfolio | Proof of expertise | 3,000 - 6,000 EUR |
| Careers hub + ATS | Attract talent | 2,500 - 5,500 EUR |
| Public contract references | Tender credibility | 1,500 - 3,000 EUR |
| Multi-subsidiary design system | Brand consistency | 4,000 - 8,000 EUR |
| Multilingual EN/FR | Export markets | 2,000 - 4,000 EUR |
In construction, the site portfolio and careers hub weigh the most: the first wins contracts, the second cuts a recruitment cost often above 5,000 EUR per qualified role left unfilled through paid channels.
Mini case study
Sofiane, director of a 3-subsidiary, 180-employee construction group in Toronto, wants to unify his image and recruit 15 site managers per year. He picks a multi-site architecture at 26,000 EUR, maintenance 3,600 EUR/year. Recruiting via agencies and job boards costs him about 4,500 EUR per role — 67,500 EUR/year for 15 roles. If the unified careers portal captures just 6 direct hires, the saving reaches 6 x 4,500 = 27,000 EUR in year one, paying back the site. Brand consistency and the project portfolio add shortlist points on public tenders.
FAQ
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Multi-site or separate sites for a construction group?
The unified multi-site suits you if you want a consistent brand and lower maintenance (1,800-4,800 EUR/year instead of 3,000-6,000 EUR). Separate sites preserve the autonomy of strongly branded subsidiaries.
How does the site help recruitment?
A careers hub with ATS centralises subsidiary vacancies and smooths applications. It cuts cost per hire, often above 4,500 EUR via job boards and agencies.
Should we present public contract references?
Yes, it's a credibility criterion. A dedicated module (1,500-3,000 EUR) displays your public projects and reassures buyers about your ability to deliver a contract.
How long for a multi-site redesign?
Expect 12 to 16 weeks in 2026. The longest phase is defining the shared design system and migrating content from the various subsidiaries.
What annual maintenance budget should we plan?
From 1,800 to 4,800 EUR/year for a multi-site architecture, including security, backups and evolutions. That's well below the sum of separate sites maintained one by one.
Let's scope your project. Tell us your number of subsidiaries, your recruitment and contract-reference needs, and we'll frame the right architecture. 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.
