How to go to Las Pinas City Hall

Last month and days ago, I needed to go to get my PTR for a pre-employment requirement and I went to Las Pinas City Hall as I had before. From Sucat Paranaque I took a jeepney with a signage to Kabihasnan Palengke, drop off at the gas station after the school at Kabihasnan. From there you will take a jeepney bound to Las Pinas. I forgot what signage that was but just to be sure I asked the driver if he is going to drop by Las Pinas City Hall.