My contractor is building my 4200 sqft built-up house for RM580K, with everything included (I only need to supply tiles, because I am importing tiles from Southern Europe). How could it be expensive? Yet, they are doing a job which I deemed above average. The payment was made based on agreed schedule on contract, the contractor never request for payment with nonsense excuses and never exceeds the percentage done.

I did some research on the material used, they are using above average grade material for the construction of my house. So, there's nothing that I can argue.