The verdict in three sentences
A website for a water and sanitation engineering consultancy in Nairobi costs, as a 2026 order of magnitude, between USD 5,000 and 15,000 with local agencies, for an 8 to 12 week project. What wins tenders from utilities and development banks is not animation but quantified project sheets (flow, population served, funder, contract value) and downloadable expert CVs in the expected format. A multilingual site with genuine translations (English, French for francophone tenders, Swahili where relevant) is worth more than a machine-translated one.
What evaluators actually look for
A procurement officer at a water utility, the World Bank, the AfDB or a bilateral agency opens your site to check three things: comparable references, available experts and credible financial capacity. Your site must answer those checks in under two minutes.
| Site block | Expected content | Why it matters |
|---|---|---|
| Project sheets | Flow (m³/day), population served, network length, funder, value, year | Proof of comparable references |
| Reference filters | By type (water supply, sanitation, treatment plant, irrigation), country, funder | Find a similar project in 10 seconds |
| Expert CVs | PDF in funder format, years of experience, languages | Saves evaluator time |
| Quality and registrations | ISO 9001, Engineers Board registration, certificates | Administrative compliance |
| Key figures | Headcount, revenue, countries of operation | Perceived financial capacity |
| French version | Full translation for francophone tenders | Access to West and Central African bids |
| Publications | Studies, technical papers, conferences | Technical credibility |
The project sheet format is decisive. An effective sheet fits on one screen: a title, a map or photo, a table of 6 to 8 technical data points and two sentences on the assignment (feasibility, detailed design, tender documents, works supervision). Evaluators compare figures, not prose.
Budget in USD: what consultancies pay in Nairobi in 2026
The amounts below are 2026 orders of magnitude from Nairobi agencies, excluding technical writing by your engineers.
| Level | Scope | Indicative range | Timeline |
|---|---|---|---|
| Simple brochure site | 8 to 10 pages, one language, 10 references | USD 5,000 to 7,000 | 6 to 8 weeks |
| Project repository | Filterable base of 40 to 80 sheets, PDF CVs | USD 8,000 to 11,000 | 8 to 10 weeks |
| Full multilingual | EN/FR plus a third language, multilingual CMS, SEO | USD 11,000 to 15,000 | 10 to 12 weeks |
| Professional translation | 15,000 to 25,000 words | USD 1,500 to 3,000 | 2 to 3 weeks |
| Annual maintenance | Updates, backups, security | USD 800 to 1,800 per year | Ongoing |
At Kolonell, this kind of site falls under the Premium offer, 2,000,000 to 3,500,000 FCFA (3,050 to 5,340 EUR, roughly USD 3,300 to 5,800), with a filterable project repository and multilingual management included. Maintenance starts at 35,000 FCFA per month, and monthly SEO is available from 100,000 FCFA per month (SEO Essentiel). Technical translation is best handled by a translator specialised in hydraulics.
Mistakes that cost points in evaluation
References without figures. "Sanitation study in Machakos" says nothing. "Sanitation master plan, 120,000 inhabitants, 85 km of network, AfDB funded" matches the evaluation grid.
Outdated CVs. A CV dated 2022 on the site of a firm bidding in 2026 casts doubt on the expert's availability. A simple back office lets the executive assistant replace them without a vendor.
Translation treated as optional. Francophone tenders in West and Central Africa value French documentation. A poorly translated version, with inconsistent units, hurts more than no version at all.
Mini case study
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Wanjiru, managing partner of a 35-person engineering firm in Nairobi (illustrative scenario), answers about 24 tenders a year, utilities and funders combined, with a 17% success rate, so 4 contracts. The average study contract is worth USD 120,000.
She invests USD 12,000 in a multilingual site with 60 project sheets and 18 expert CVs. If presentation quality wins just one extra contract every two years, the average annual gain is USD 60,000 of revenue, 5 times the site cost every year. On time, the team saves about 3 hours per bid compiling references: 24 x 3 = 72 engineer hours per year freed up.
FAQ
How much does a website for an engineering consultancy in Nairobi cost in 2026?
As a 2026 order of magnitude, budget USD 5,000 to 15,000 depending on project sheets and languages. At Kolonell, the Premium offer runs from 2,000,000 to 3,500,000 FCFA, roughly USD 3,300 to 5,800.
How many references should we publish?
Between 30 and 80 sheets is enough for most firms. 40 complete sheets with figures and funder beat 150 lines without data.
Do we really need a French version?
If you bid in francophone Africa, yes: professional translation usually costs USD 1,500 to 3,000. For a firm focused only on East African clients, English alone can do at launch.
Can we publish expert CVs safely?
Yes, with each expert's written consent and no sensitive personal data (home address, ID number). A funder-format PDF CV updated every 6 months is the norm.
What timeline should we plan?
Count 8 to 12 weeks, of which 3 to 4 weeks go to your teams collecting project data. That step is the most common cause of delayed launches.
Let's scope your project. Tell us how many references you want to publish, the languages and your tender calendar: we will price a site deliverable in 8 to 12 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.
