Its a nightmare, no visibility of completion date(as date given continuously for 5 times have not been met by builder), compromises on quality by builder. Builder not at all concerned, this time too they said its a probable date and they are optimistic, but asked do they have any plan in case dates fail this time too, they told us to be optimistic and not to be pessimistic.
Finally it boil down to floating labour and money not paid to them by customer(everyone has given 90-95% to them already a year back). Finally you decide, better go for other builder.