Not necessarily. High-quality custom cabinets use different materials for different reasons. A plywood box with a well-finished MDF painted door is a very strong combination that can outperform a solid wood cabinet of lower construction quality. The build method and finishing matter as much as the material.

Solid wood is valuable in the right places, especially when you want visible grain, warmth, and a natural look. But that doesn’t mean every part of a cabinet should automatically be solid wood.

In many cases, high-quality custom cabinets perform better when different materials are used for different purposes. For example, a plywood cabinet box paired with a painted MDF door can be a very strong and durable combination.

Solid wood also moves more with seasonal humidity changes, which can be a drawback in some applications. So while it has clear advantages, it isn’t automatically the best choice for every part of the cabinet.

What matters more is how well the cabinet is designed and built as a whole.