Custom System or UI Kit?

A decision framework to evaluate whether to build a full system, use an existing UI kit, or find a middle ground.

When to use it

Before beginning any major system initiative — especially when alignment is unclear, resources are tight, or you’re unsure if a system is worth the investment.

Steps

1. Define 2–3 core problems you aim to solve with a system or kit.
2. Audit existing tools, frameworks, or kits already in use.
3. Map capabilities (what’s needed) vs resources (what’s available).
4. Plot your needs on a Custom ↔ Kit spectrum:
   • Go custom if your product has unique interaction patterns, branding needs, or technical constraints that require flexibility.
   • Use a kit if speed, consistency, and alignment matter more than fine-tuned control, especially in early-stage or internal tools.
   • Blend if you want a solid foundation (like a kit) but need some tailored extensions.
5. Make the call: build, borrow, or blend — and document why.

Outcome

• Clarity on direction before heavy investment
• Avoids overbuilding or unnecessary custom work
• Aligns your system efforts with your team’s actual needs and capacity