What kind of spider is this?

I’ve seen this same spider a few times in my home. Should I leave it alone or catch and release? My biggest concern is it potentially biting my kids (Mainly my cat, but I also have a dog and human child.) It was hard to get a close up picture, from leg to leg it’s a bit bigger than a quarter (25¢). It’s dark brown and has a few black lines. Are they harmful if they do bite? I’m not allowed to kill it my son will lose it on me.