The verdict in three sentences
A construction project tracking tool turns scattered spreadsheets into real-time control of hours, purchasing and margin, project by project. In 2026, the real choice isn't SaaS *versus* custom but project volume × process specificity: under 15 active sites a SaaS is enough, beyond that custom software at EUR 45,000-100,000 pays back within one financial year. The decisive lever is on-site mobile time capture paired with budget tracking, which recovers about +8 margin points per project.
Construction SaaS or custom software: the 2026 comparison
London is well served by generalist tools, but none covers a specific operating model 100% (in-house take-offs, cascading subcontracting, public tenders). Here are 2026 ballpark figures.
| Criterion | Construction SaaS | Custom software |
|---|---|---|
| Entry cost | EUR 30-70 / user / month | EUR 45,000-100,000 one-off |
| Cost 20 users / 3 years | EUR 21,600-50,400 | EUR 45,000-100,000 + maintenance |
| Time to launch | 2-6 weeks | 3-5 months |
| Fit to your process | Low to medium | Total |
| On-site mobile capture | Depends on vendor | Custom, offline included |
| Code ownership | No | Yes |
| Roadmap | Vendor queue | Prioritised by you |
In short: SaaS wins on the short term and small firms; custom wins as soon as user count and process singularity rise.
The features that actually recover margin
Not all functions are equal. These genuinely move the bottom line, with estimated impact (2026 order of magnitude).
| Feature | What it does | Estimated impact |
|---|---|---|
| Mobile time capture | Hours logged on site, geolocated | -3 to -5 hrs/week of re-entry |
| Live budget tracking | Budget vs actual by work package | Drift alert within 48 h |
| Time-stamped site photos | Progress proof and disputes | -40% handover disputes |
| Margin per project | Consolidated hours + purchases + subcontracting | +8 pts average margin |
| Resource planning | Crew/equipment allocation | -15% lost hours |
| Work-in-progress billing | Progress invoicing | Cash collected 20 days sooner |
Mini case study
Take Frank, owner of a 22-employee structural works firm in East London, EUR 4.8M turnover and 18 active sites. Before, two site managers each spent 6 hrs/week consolidating hours in Excel. He invests EUR 62,000 in custom software with mobile time capture and margin tracking. Time saved: 12 hrs/week × EUR 45 = EUR 540/week, about EUR 25,000/year. More importantly, early drift detection recovers 8 margin points on 2 loss-making projects, roughly EUR 90,000 over the year. The project pays back in under 8 months.
FAQ
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How much does custom construction tracking software really cost in 2026?
Expect EUR 45,000-100,000 depending on scope (time capture, budget, purchasing, subcontracting, public tenders). Annual maintenance then runs 12-18% of the initial cost.
Does mobile time capture work without a signal on site?
Yes, a custom build includes an offline mode that syncs hours as soon as the connection returns. That's essential on remote sites.
Can the software connect to my accounting?
Yes. You typically link Sage, Xero or your ERP via API or export, to avoid double-entering purchases and progress billing.
How long before we're operational?
A SaaS is ready in 2-6 weeks; custom software takes 3-5 months, starting with a first module (time capture + margin) live before the rest.
Custom or SaaS if I run 8 sites?
At that volume a well-configured SaaS is usually the best cost/speed ratio. Custom becomes worthwhile beyond ~15 active sites or with highly specific processes.
Let's scope your project. Tell us your site volume, current tools and target budget (typically EUR 45,000-100,000) for on-site tracking that protects your margin. 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.
