It's much easier to commit to a design decision when you can actually see it, rather than imagine it from a swatch and a floor plan. That's the whole reason 2D and 3D design work exists as a service on its own.
Every project we take on starts with 2D floor plans showing layout and furniture placement, and for full-home or facade projects we typically provide 3D visualisation as well, so you can see materials, colours and lighting rendered close to how the finished space will actually look — before any construction begins.
This step also tends to catch layout issues early, while they're still a five-minute fix on screen rather than a costly change mid-project.