Electrical points on a plan are easy to misjudge. You think, “one plug here, one there,” without really feeling the space. Marking future plug points with tape on actual walls forces you to interact with them at life size.
You can stand where the bed will go and ask, “Is this switch in reach when I’m half asleep?” You can imagine a sofa and check if there’s somewhere to plug in a lamp and phone charger without cables stretching across the room. In the kitchen, you see if appliances would actually fit where you expect.
Sometimes you’ll realise a point is too low, too high, or in a spot that will be blocked by furniture. It’s much cheaper to shift tape than to move wiring in a finished wall.
This simple exercise turns abstract planning into something your body and eyes can both understand. The end result: fewer extension boards, fewer ugly cables, and a home that actually matches the way you live.