What Is the Difference Between In-House and Agency UX Design?

What Is the Difference Between In-House and Agency UX Design?

In-house UX designers work within one brand and build deep product knowledge over time. Agencies work across many clients and bring pattern recognition from different industries. For ecommerce, the trade-off is focus versus breadth. In-house works well for stores with continuous, complex design needs. An agency or specialist is faster to deploy and requires no recruitment overhead. The gap is who understands your specific store’s data — that takes time either way.

For stores in the €1M-€10M range, in-house becomes cost-effective once you have around 40 recurring design tasks per quarter. Below that threshold, a mid-level UX designer costs €70K-€90K all-in per year in the Netherlands (CBS salary data, 2025), a fixed commitment that most stores at this scale cannot fully use. In the QuickScan audits I run at this size, the most common finding is that a part-time specialist or agency handles the strategic work more efficiently than a full-time hire, particularly when the design backlog is periodic rather than continuous.