[West Ender]

You need a shed or chicken coup for them to roost in at night so that may be your "permanent structure". You should also bear in mind that hens like to scratch in the soil and can transform a hen-pen into a mudbath with consumate ease. Add in the cost of feed and the fact that they all go "off lay" from time to time and it might prove an expensive way of getting fresh eggs. Still, I like hens and it could prove a nice hobby for you. Good luck.