The back walls look like got water seepage problem. 3Phase will cost 10k minimum, plumbing min 5k. The porch if can do columnless will be comfortable. I think, will need 200k just for the wet works and basic struture. Another 50k for kitchen furniture, etc. If u need funding, just check out affin bank has a 36 months balance trnasfer at below 4% p.a. (eff interest). EON bank also quite cheap. Anyway, I used the credit cards to pay for aircons and kitchen, and whoever else willing to take my card...