How long does software development take? Planning realistic project timelines
From an MVP in 6–10 weeks to a company-wide solution: realistic timelines for custom software.
Software Project Duration
The short answer
MVP: 6–10 weeks. Production-ready business application: 3–6 months. Company-wide solution with integrations: 6–12 months – agile, with usable interim versions every 2–4 weeks.
The short answer: a software MVP for validation takes 6–10 weeks, a production-ready business application for the mid-market 3–6 months, and company-wide solutions with several integrations 6–12 months. Agile delivery produces usable interim versions every 2–4 weeks – you never wait until the end for the first result.
Custom software development – made in Germany from Leer, East Frisia – is more predictable than its reputation suggests: with a proper discovery phase, a prioritised backlog and fixed review slots, timelines become reliable. For budgets, see the software development cost calculator; for total costs over the usage period, the TCO comparison calculator helps.
The phases of a software project on the timeline
| Phase | Duration | Scope |
|---|---|---|
| Discovery & requirements | 1–4 weeks | Workshop, process mapping, prioritised backlog and architecture decision. The most important phase against later surprises. |
| Design & architecture | 2–4 weeks | Data model, interface design, UI concept and technical foundation. |
| Iterative development | 6–24 weeks | Delivery in sprints with reviews every 2 weeks. The scope of this phase drives total duration. |
| Testing & acceptance | 2–6 weeks | Integration tests, user acceptance testing, load tests where needed, and bug fixing. |
| Deployment & rollout | 1–4 weeks | Go-live, data takeover, training and supported launch with short reaction paths. |
What really drives software project duration
These levers decide over weeks to months:
- Scope clarity: a prioritised must/could backlog prevents the most common delay – creeping scope expansion.
- Interfaces: every integration (ERP, CRM, legacy systems) adds coordination and testing with external parties.
- Feedback speed: weekly reviews with decision-makers keep momentum high.
- Existing systems: greenfield is faster than integrating into grown landscapes with undocumented legacy systems.
- Team continuity: a settled team delivers more consistently than rotating staff – even at the same headcount.
Plan timeline and budget together
In a free initial consultation we clarify scope, milestones and realistic dates for your project – made in Germany, from Leer in East Frisia.
FAQ
FAQ: Software Project Duration
How long does a typical custom software project take?
For the mid-market: 3–6 months to a production-ready business application. An MVP for validation is possible in 6–10 weeks; company-wide solutions with several integrations need 6–12 months.
Why do software projects often run longer than planned?
The three main reasons: creeping scope expansion without prioritisation, underestimated interfaces to existing systems, and slow internal decision-making. All three are avoidable through project structure – not through more developers.
When can I see first results?
With agile delivery, after 2–4 weeks: every sprint produces a testable interim version. You see early whether the direction is right and can adjust priorities without endangering the timeline.
Does a bigger team shorten the project?
Only to a point. Up to about 3–5 developers, speed scales well; beyond that, communication overhead grows disproportionately. Clear scope, fast decisions and experienced developers are more effective.
How do I plan the go-live date realistically?
Calculate backwards from the target date and add a 15–20% buffer for testing, acceptance and rollout. Critical: block key-user holidays and freeze periods (e.g. year-end closing) in the calendar early.