Hello, I would like to ask anyone with experience if getting CCC(CF) means DBKL has approved my final renovation?

I have already obtained the CCC for 2 months but somehow a guy(claims to be from DBKL, with an ID card) holding my house plan came to my house and said he needs to inspect my house, including the interior.

I denied him entry and asked him to contact my architect. Anyone experienced this? Is he legitimate?