Development

When to Build a Custom Web App vs Buy Software

7 min read 2026-01-30 Marcus Webb

As a company that builds custom software, we still tell prospective clients not to build about a third of the time. Here's the framework that decides which side of that line a project falls on.

Is this process actually your differentiator?

If the workflow you're trying to build software for is genuinely how you compete - logistics, scheduling logic, proprietary processes - custom software usually pays for itself. If it's a commodity process like basic invoicing, it rarely does.

What off-the-shelf options actually cost

Buying software isn't free - subscription costs compound over years, and the workarounds required to fit a generic tool to your process carry a real, if hidden, cost in staff time.

  • Total 3-year subscription cost, not just monthly price
  • Cost of workarounds needed to fit your actual workflow
  • Switching cost if the vendor changes pricing or shuts down

The hybrid option most teams miss

Buying a core platform and building targeted integrations or automation around it often captures most of the benefit of custom software at a fraction of the cost of a full build.

MW
Marcus Webb

Head of Engineering at OWL IT Solutions

Frequently Asked Questions

Quantify the current cost of the workaround - hours spent, errors made, opportunities missed - and compare it against a realistic build and maintenance estimate over 3 years.

Scope creep from trying to replicate every feature of an off-the-shelf tool instead of focusing on the specific workflow that justified building in the first place.

Discussion

Comments

JK
Jamie King2 days ago

Really useful breakdown - the point about is this process actually your differentiator? matches exactly what we ran into last quarter.

MW
Marcus Webb1 day ago

Glad it was useful, Jamie - happy to go deeper on that if you want to book a call.

Ready to put this into practice?

Book a free consultation and we'll help you apply it to your project.

Get Free Consultation