A sofa that looks perfect in a showroom photo can still block a hallway or swamp a typical New Zealand lounge. Size is a handful of measurements most shoppers skip - width, seat depth, and the path you still need to walk.

The dimensions that actually matter

Overall width is the obvious one - wall-to-wall, minus a walking path. Seat depth decides comfort: 55-65 cm for upright sitting, 70-85 cm for deep lounging. Seat height is usually 42-50 cm (easier to stand from if it is not too low). Standard arms sit around 60-65 cm from the floor, which is what a side table needs to line up with.

NZ living room sizes and what fits

New Zealand homes vary widely, but a typical standalone house lounge runs about 4 × 5 m, while townhouse and apartment lounges are often tighter - 3.5 × 4 m or less. In a smaller space, a three-seater that clears 210 cm usually leaves a comfortable walkway and room for a coffee table in front. In an open-plan kitchen-living area you may have more wall length, but still need to respect the traffic flow between rooms.

How many seats do you actually need? A 180–190 cm two-seater comfortably seats two adults; a 200–230 cm three-seater seats three but is really two adults plus a curler-upper. If you regularly host five people, a corner sofa or a second chair is a more honest solution than squeezing a huge sofa into a too-small room.

The 2/3 rule for sofa vs room width

A popular rule of thumb: the sofa should occupy no more than two thirds of the wall it sits against, leaving visual breathing room either side. So in a room where the sofa wall is 3.6 m wide, aim for a sofa no wider than about 240 cm. This is a guideline, not a law - a sofa that runs a little wider in a very long room can still look intentional - but if you find yourself needing to push the sofa hard against both side walls, it is probably too big.