KL? PJ?

I'm staying in KL, house address also KL, but i got the assessment (Cukai Taksiran atau Cukai Pintu) issued by MBPJ - Majlis Bandaraya Petaling Jaya?

Two of my friends staying in Sungai Buloh, same housing area, but one of them got from Gombak, and another one from Selayang..

strange huh..