The verdict in three sentences
A custom construction tracking software costing 85,000 EUR let a 60-employee construction firm in Berlin cut its budget overruns by 15 % and issue progress billing 30 % faster. The return on investment lands in 18 months, mainly through avoided overruns and automated time tracking. On 14M EUR revenue, even one recovered margin point comfortably funds the tool.
The context and the quantified problem
Before the project, site tracking relied on spreadsheets, texts between site managers and a late monthly consolidation. Overruns were spotted too late to act.
| Indicator (before) | 2025 value |
|---|---|
| Employees | 60 |
| Simultaneous active sites | 22 |
| Average budget overrun/site | 9.5 % |
| Progress billing lead time | 12 days |
| Hours/month of time-sheet entry | 140 h |
| Client disputes/year | 18 |
| Annual revenue | 14M EUR |
On 14M EUR revenue, an uncontrolled average overrun of 9.5 % represents a shortfall of several hundred thousand euros. That is where the real ROI reservoir hides.
The investment and the gain, line by line
The software built covers geolocated mobile time tracking, real-time budget monitoring, progress-billing generation, change-order management and a multi-site dashboard.
| Line item | 2026 amount (EUR) |
|---|---|
| Business scoping and workshops | 10,000 |
| Custom software development | 52,000 |
| Mobile time-tracking app | 14,000 |
| Rollout, training, data migration | 9,000 |
| Total investment | 85,000 |
| Annual maintenance | 12,000 |
| Gain after 18 months | 2026 value |
| Average budget overrun | 8.1 % (-15 %) |
| Progress billing lead time | 8 days (-30 %) |
| Hours/month of time-sheet entry | 25 h (-82 %) |
| Client disputes/year | 8 (-56 %) |
| Cash flow: earlier collection | +4 days on average |
| Estimated annual gain (overruns + time) | 118,000 EUR |
Cutting overruns by 15 % on sites representing 8M EUR of costs equals roughly 100,000 EUR recovered per year (2026 order of magnitude), plus 18,000 EUR of saved entry time.
Mini case study
David, operations director in Berlin, signs off the budget. Investment 85,000 EUR, maintenance 12,000 EUR/year. Estimated annual gain: 118,000 EUR. In the first full year, the net gain (118,000 - 12,000) reaches 106,000 EUR, more than the initial investment. ROI is prudently dated at 18 months to account for ramp-up and data migration. Over three years, cumulative net gain exceeds 250,000 EUR, before counting the cash-flow improvement from earlier billing.
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FAQ
How much does custom construction tracking software cost in 2026?
Between 60,000 and 120,000 EUR for a full scope with a mobile app. This firm invested 85,000 EUR for 22 simultaneous sites.
Where is the main gain?
In avoided budget overruns: caught in real time rather than month-end, they drop 15 % here, about 100,000 EUR per year.
Do teams really adopt mobile time tracking?
Yes, when the app is simple: here 82 % of entry time vanished, with workers clocking in within seconds on site.
What is the implementation timeline?
Expect 4 to 7 months depending on accounting integrations. ROI is dated at 18 months to stay conservative on ramp-up.
Can we connect accounting and payroll?
Yes, via API or export. Time tracking feeds payroll and budget monitoring feeds cost accounting.
Let's scope your project. Site tracking, mobile time tracking, progress billing or a multi-site dashboard: tell us your number of sites and indicative budget, and we'll model the avoided overruns. 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.
