Even with an engineer there, its difficult to foresee all possible problems that might arise. Though I guess it will be a lot more realistic than with just sale

Even with an engineer there, its difficult to foresee all possible problems that might arise. Though I guess it will be a lot more realistic than with just sales people. (Saying that I just bought an new build apartment and speaking with the architects, we are far from the only industry to be late - we were comparing how similar projects end up in that respect).