Is it common for people to purchase a renovated landed property without the CCC?

Seller has refused to get the CCC (which to us is very fishy) and instead is willing to offer a discount off the price.

Agent has indicated to me that sometimes this happens as they only procure DBKL approval for renovation.

Is this very common?

Thank you .. that's what I thought too!!! But now another agent has told me the same thing for a separate property ..