Guinea pigs don’t need much space, but it helps to prepare the housing before bringing the animals home. Guinea pigs can be raised in one of these housing systems: pens or hutches.
Raising guinea pigs in a hutch system requires less space and is easier to keep warm in the winter. If you plan to make your hutch, construct it to accommodate one male and 3-4 females and all the young until weaned.
Most breeders use the pen system as housing for the guinea pigs. The pen system provides more space, needs less cleaning, and is more economical.