Do I need a plumber or a bullder?

[Pinkcadillac]

We moved recently to a new place and the outlet pipes for washbasin, washing machine and sink run into an own drain. I would like them connected to the main pipe Inst

Plumber

Sorry posted too soon! I’d like them connected to the main pipe. Should I call a plumber? Or a builder? I’ not sure what kind of job this is. Any input will be appreciated!

Thanks!

Plumber

I would research both plumbers and builders and only contact those who have good/excellent reviews.