I'm finishing my basement and doing a mix if DIY and hiring out plumbing. I got a quote from a trusted plumber and I was planning on getting a second quote just to be prudent but so far all the companies I've been recommended to charge a fee to give an estimate. Could I bounce the original quote off you guys and have you tell me if it's in the right ballpark? The work includes: -Installing drains and a vent for a 3/4 basement bathroom. I'm digging the trenches and patching the concrete, the plumber will tie into the drain and run PVC. -Installing a backflow valve at the drains entrance to the house, again I'm doing any digging and patching. -Replacing the cast-iron bottom 4 feet of the DWV stack with PVC and adding an above ground clean out (mine is currently in a hole) -Moving a laundry room sink, I'm digging and patching, the plumber will add the drain and move the hot/cold water line -Moving the gas line for the dryer across the room The quote was for $2300. The plumber came well recommended and I liked him when we did the estimate. Does that sound about right?

Our home is about 20 years old. We noticed water on our finished basement floor carpeting along a wall by a PVC drain line clean out. I felt above the clean out and it was wet, so I cut a hole above it at the ceiling. The line takes a 45 degree angle for about a foot and goes on top of the poured concrete foundation up through the first floor plywood. I can see black gunk on the outside of the pipe as it goes above the first floor plywood and the plywood is water stained, as well. Almost directly above the pipe on the second floor is a full bathroom. I'm thinking that there may be a leak in the second floor toilet drain that is causing this leakage. I haven't removed the toilet yet to check. Also, our power company mounted a control box on the siding outside in the same place where this pipe runs and used 2" lag screws. But I'm not sure the screws are long enough to puncture the pipe in the wall. Do you think the toilet drain is the likely cause, or the lag screws? If not, I'm interested in all other opinions. Thanks. Tim