Home Affordable Portable Buildings Portable UnitsOur buildings are built with high quality, brand new, NZ made materials by local contractors. Each unit is built to order so is customised to your needs. Here are our standard sizes: ECONOLINE UNITSTWIN OFFICESTUDIO SELF-CONTAINED UNITLARGE MULTI OFFICESLUNCH ROOM/SMOKO ROOMTOILET BLOCK/ABLUTION BLOCK Custom units built to order