The verdict in three sentences
A construction company answering 80 to 200 tenders a year spends between 160,000 and 1,600,000 EUR of internal time on bids, often without knowing which ones were winnable. A custom app (25,000 to 50,000 EUR excl. VAT) with go/no-go qualification, a library of project references and CVs and a reverse schedule targets 30% less time per bid. A tender alert service (1,500 to 5,000 EUR a year) plus Excel finds opportunities, but helps neither to choose nor to produce the technical proposal.
Alerts + Excel or custom app: the 2026 comparison
Most contractors with 50 to 300 staff, in Marseille as in London or Dubai, combine a tender alert platform (public procurement portals, buyer profiles) with a shared spreadsheet. The technical proposal is rebuilt from earlier files, and CVs and certificates are hunted down every time.
| Criterion | Alerts + Excel | Generic bid software | Custom app |
|---|---|---|---|
| Upfront cost | 0 EUR | 3,000 to 10,000 EUR | 25,000 to 50,000 EUR |
| Annual cost | 1,500 to 5,000 EUR of alerts | 6,000 to 20,000 EUR in licenses | 4,000 to 8,000 EUR maintenance |
| Go/no-go qualification | Gut feeling, meeting | Standard grid | Weighted grid on your criteria and history |
| References and CV library | Network folders | Partial | Indexed by trade, value, client |
| Bid reverse schedule | Manual | Yes | Yes, with alerts per contributor |
| Win rate tracking | Rarely kept | Basic | By segment, client, trade and price |
| Fit with construction trades | None | Limited | Complete (structural, MEP, civil works...) |
Generic bid response tools are often designed for services or IT. Construction specifics (lots, priced bills of quantities, variants, mandatory site visits) are poorly covered.
Modules of a construction tender app
| Module | Function | Indicative 2026 budget |
|---|---|---|
| Tender import and record | Pull from alerts, lots, key dates, documents | 3,000 to 6,000 EUR |
| Go/no-go qualification | Weighted score: margin, workload, competition, history | 4,000 to 7,000 EUR |
| Content library | Project references, CVs, certificates, standard paragraphs | 6,000 to 12,000 EUR |
| Technical proposal builder | Template assembly, AI drafting assistance | 5,000 to 10,000 EUR |
| Reverse schedule and tasks | Milestones, contributors, alerts before deadline | 3,000 to 6,000 EUR |
| Win rate analytics | Rates by segment, price gap analysis | 4,000 to 9,000 EUR |
Typical plan: 3 weeks of scoping with estimating and sales, 8 to 10 weeks of development, 2 weeks of migrating existing references. A pilot on 5 to 10 live bids validates the gains before rollout.
What a tender response costs
| Bid type | Internal time | Estimated 2026 cost |
|---|---|---|
| Small contract, simplified procedure | 2 to 4 days | 2,000 to 3,500 EUR |
| Mid-size contract, one or two lots | 5 to 8 days | 4,000 to 6,000 EUR |
| Large multi-lot contract | 10 to 15 days | 7,000 to 12,000 EUR |
| Design and build | 20 days and more | 15,000 EUR and more |
| Average observed win rate | 15 to 25% |
Mini case study
Karen, sales director of a 180-staff structural contractor in Marseille, answers 150 tenders a year at an average cost of 4,500 EUR, or 675,000 EUR of internal time. Her win rate is 18%. With the go/no-go grid, she drops 20 low-probability bids (90,000 EUR saved). On the remaining 130, the library and reverse schedule cut time by 30%, freeing 175,500 EUR. The app costs 40,000 EUR plus 6,000 EUR a year of maintenance: it pays back in under 3 months, and the time freed goes into stronger technical proposals for priority bids. A contractor in London or Dubai with similar volumes would see the same ratios in GBP or AED.
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FAQ
Can the app connect to our tender alert platform?
Yes, most platforms offer an export or an API. Automatic import costs 2,000 to 4,000 EUR depending on the provider.
Can AI write the technical proposal?
It assembles templates and suggests paragraphs from your library, saving 30 to 50% of drafting time. Review by the bid manager remains essential to match the specification.
How long until we are live?
Allow 3 to 4 months, including 2 weeks to migrate 100 to 300 project references. The go/no-go module can be used from week six.
How is the go/no-go score calculated?
It combines 6 to 10 weighted criteria: expected margin, estimating workload, site distance, client relationship, known competition. Weights are tuned after 30 to 50 bids using your history.
Does the data stay in the company?
Yes, the app is hosted in the region you choose and the code belongs to you. References and CVs are only visible to authorized profiles, with an access log.
Let's scope your project. Share your tender volume, trades and bid organization: we price an app between 25,000 and 50,000 EUR, delivered in 3 to 4 months. 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.
