Plan a home office layout for desk, chair and storage.
A home office is limited by two things: the wall run the furniture needs and the depth the chair needs behind the desk. The chair zone is the one people forget — a task chair needs about 3 ft behind the desk edge to push back and stand, so a 5 ft desk claims 5 by 5.5 ft of floor, not 5 by 2.5. Add roughly 3 ft of wall for each filing cabinet or bookcase and you have the total run, which is what decides whether everything lines up on one wall or has to turn a corner into an L. Once the run exceeds what two walls can take, wall-mounted shelving is the only way to recover the floor, because storage depth is what eats a small room.
Home Office Layout
Workzone = desk width x (desk depth + 3 ft chair zone); storage = units x 4.5 sq ft; wall run = desk width + units x 3 ft; free area = room area - workzone - storage
About 50 sq ft is workable for a desk, chair and one cabinet; 80-100 sq ft is comfortable and allows a second work surface or a visitor chair.
Perpendicular to the window is best — facing it puts glare and a bright background behind your screen, and facing away puts reflections on it.