Planning guide / 02
Fits on the floor.
Works in the room?
Start with the outside footprint. Then reserve room to use the piece. Finally, check the things a simple floor plan cannot establish.
Compare actual rectangles
A 160 × 210 cm bed frame centered in a 304.8 cm wide room leaves (304.8 − 160) ÷ 2 = 72.4 cm on each side. That is a wall-gap calculation, not proof that both sides have a usable route from the door.
Reserve the space you need
A wardrobe door or drawer extends beyond the cabinet footprint. A chair moves away from a desk. In the planner, set a reserved area on the relevant local side of the object. Use a value measured from your furniture and intended use. Zero means no area has been reserved, not that the object is accessible.
Read a conflict literally
Footprint overlap means two rectangles share area. A use-space warning means another piece enters a zone you reserved. A door warning uses a conservative square reserve; it is not a precise hinge simulation. Shared use areas can overlap, so they may need to be used at different times.
Compare the cost of a change
Copy A to B and try a new position. If you need a smaller desk, change its dimensions explicitly. The comparison will list that change. Moving the same non-overlapping furniture does not increase the room’s total unoccupied floor area.
Finish with real-world checks
Continuous routes, furniture delivery, window operation, ceiling height, accessibility and building regulations are not checked. Verify these separately before buying or moving furniture.
Take your measurements into the planner
Enter centimeters, measured inside the room and outside the bed frame. This only prepares a project; it does not check doors or access routes.