Typical structures in the villages are bungalows built by people you know. Sounds like the crisis in the link you shared is from corrupt approvals and poor construction of commercial properties sold to people. People build houses they will live in in the villages and for me this is a big enough incentive to build it properly. You will have no one to blame when your own roof falls on your head. The builders are also known and it would be a business ending move to build a rubbish house for your neighbour. Word would get out pretty quick. One thing people do in the village is talk as they have plenty time. I think all these other factors make up for the lack of regulation.