The verdict in three sentences
For an SME that files 60 bids a year, every submission rejected over an expired compliance document means weeks of lost estimating work and sometimes a contract worth several hundred thousand euros. A custom tender management app, budgeted between 18,000 and 42,000 EUR (about 20,000 to 46,000 USD), centralises monitoring, documents and deadlines to target 98% compliant bids. The project ships in 3 to 4 months and often pays for itself with a single additional contract won.
Why bids get lost: diagnosis of a construction SME
In construction and public works, public procurement in Europe and North America requires a heavy qualification file: tax and social security clearance certificates, insurance certificates, professional qualifications, company registration, financial statements and references. Certificates have short validity periods and submission deadlines often fall in the same week. On spreadsheets and shared folders, mistakes are inevitable.
| Indicator (2026 order of magnitude) | Manual process | With a dedicated app |
|---|---|---|
| Tenders identified per month | 8 to 12 (manual portal reading) | 20 to 30 (filtered monitoring by region and sector) |
| Time to assemble a bid | 3 to 5 person-days | 1 to 2 person-days |
| Bids rejected for missing or expired document | 10 to 15% | Under 2% |
| Compliant bid rate | 85 to 90% | 98% target |
| Missed deadlines per year | 3 to 6 | 0 to 1 |
| Owner visibility on the pipeline | Weekly meeting | Real-time dashboard |
Out of 60 bids, going from 12% to 2% administrative rejections means 6 more bids actually evaluated by contracting authorities each year.
The features that matter and their cost
A good app does not replace your estimator: it removes the repetitive tasks around them. Here is a module breakdown with realistic ranges for custom development in 2026.
| Module | Scope | Indicative budget excl. VAT |
|---|---|---|
| Tender monitoring | Import and filtering of notices from TED, SAM.gov or national portals, alerts by region, sector and value | 3,000 to 6,500 EUR |
| Compliance document library | Versioned storage, expiry dates, alerts 30 and 7 days before | 2,500 to 5,500 EUR |
| Bid assembly | Checklists by contract type, automatic table of contents generation | 3,500 to 8,500 EUR |
| Estimating and bills of quantities | Unit price library, BoQ import, history | 4,000 to 10,500 EUR |
| Tracking and dashboard | Pipeline, win rate, rejection reasons, active bid bonds | 2,000 to 5,000 EUR |
| Roles, hosting and security | Permissions, audit log, backups, EU or US hosting | 3,000 to 6,000 EUR |
| Total project | Full version | 18,000 to 42,000 EUR |
A version 1 limited to the first three modules usually stays under 18,000 EUR and can be live in 8 to 10 weeks. Bid bonds and performance bonds can also be tracked to avoid forgotten releases, which tie up cash.
Custom build or off-the-shelf software?
Off-the-shelf bid management tools cost 150 to 600 EUR per user per month and are often built for large contractors or for a single country's portal. Adapting them to your document checklists and estimating spreadsheets can cost almost as much as a dedicated build, with a recurring subscription on top. A custom app belongs to the SME and integrates with its existing tools (accounting, estimating spreadsheets).
Mini case study
Mark, managing director of a 45-employee construction firm in Lyon, submits 60 tenders a year with a 15% win rate and an average margin of 28,000 EUR per contract won. He invests 28,000 EUR in an app.
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
- Administrative rejections: from 7 bids to 1 a year, so 6 more bids evaluated.
- At a 15% win rate, that is about 0.9 extra contract per year, or 25,200 EUR in margin.
- Time saved: 60 bids × 2 person-days saved = 120 person-days, about 12,500 EUR of payroll cost.
- Estimated annual gain: 37,700 EUR, for a return on investment in under 10 months.
FAQ
How long does it take to build the app?
Count 3 to 4 months for the full version, and 8 to 10 weeks for a first version focused on monitoring and compliance documents.
Can the data be hosted in our country?
Yes. The app can be deployed with a local hosting provider or on the SME's own server, which usually adds 10 to 15% to the setup budget.
Does the tool handle bills of quantities pricing?
Yes, through a reusable unit price library. SMEs often see a 30 to 50% reduction in estimating time from the second year.
What maintenance budget should we plan?
As a 2026 order of magnitude, 15 to 20% of the initial budget per year, so 3,000 to 8,000 EUR, for hosting, fixes and changes to notice formats.
Do teams need training?
Half a day to a full day is enough for bid coordinators. An internal owner is recommended to update the document library every week.
Let's scope your project. Send us your annual tender volume and current tools: we will define the scope, an indicative budget between 18,000 and 42,000 EUR and a delivery timeline. 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.
