@topper - if/ when you have your house, consider the water supply too. If you're connected to the mains/ city supply, no problem. But if you have your own pump & it runs on electricity, then if no power = no water (unless you have a genset). It may be useful to have an artesian well ("poso") dug. When my apartment building didn't have power/ water for a week after the 2014 Glenda typhoon, my neighbours & I got water from another neighbour's well. (community spirit - the neighbour opened her gates & well for us who rent apartments.) This was in my work-town, where all the houses/ apartment buildings have their own water pumps ran by electricity. In my hometown, my parents' house is connected to the municipal water supply, and we rarely run out of water.