Reading a plan, testing it, and the mistakes that are cheap to fix on paper.
A floor plan is a contract about how you will live, drawn at a scale most people cannot read fluently. Rooms that look generous on paper are cramped once furniture arrives, circulation eats more area than anyone expects, and a door swing in the wrong place can make a whole room awkward for decades.
These guides cover reading and testing a plan before it is built — proportion, circulation, storage, and the questions worth asking while the drawing is still the cheapest thing to change.