I'm hoping someone can help me figure out the following. I paid my home builder to plumb a 3/4 bath in the basement. As we got close to closing they finally cleaned up the basement and gave us a tour. I could see where the toilet drain protruded through the floor and a vertical pipe with a right angle pipe on it for the vanity. What I don't see is a drain for the shower. When I asked the builder they stated the drain was under the concrete. Long story short, I closed on the house and now that I'm planning to finish the basement I'm starting to doubt they plumbed it correctly. In your experience(s) is it an acceptable practice to NOT have a drain protruding for the shower? I can post photos if needed. Thank you for any information you can provide!

[All 4 Drains [Drain In Floor

  • So, there's no apparent drain for the shower? (Yes, a photo would help.) Mar 7, 2016 at 12:22
  • Daniel, yes, I just didn't have them yesterday. Sorry for the delay. I do stand corrected as there is a second raised drain and a drain in the floor with a cover. I'm attempting to figure out how to attach the photos so bear with me. Thanks everyone for your input!
    – Justin
    Mar 8, 2016 at 1:59

2 Answers 2


A roughed-in stand up shower drain should be a 2" pipe sticking up out of the concrete with a pipe cap on it about 17" or so away from the wall or proposed future wall.

Ask the builder where they put it exactly. If they can't show you then they owe you some money to fix it.

Good luck!


Your suspicions are correct & legally all pipe ends need to be exposed & visibly capped. This can be done by the pipe protruding from the floor or by leaving a 6" wide hole in the floor around the pipe.

I'd get a plumber with a camera to inspect that plumbing & more, before you break-up any floor. The camera operator can confirm what's what & may be able to pinpoint it's location under the floor. If not then it's off to the inspector to get the guy who did it back out to do it again & right this time.

  • Thank you Iggy for weighing in. I've posted a couple photos and I think I found a drain that's flush with the floor. If you have a moment please check them out and let me know if the design makes sense. Thanks again!
    – Justin
    Mar 8, 2016 at 2:17
  • Well, it looks very promising. I'd expect a 1.5" or 2" plain pipe end under that cap. It has to have a trap under there, so hopefully that's in place as well. The other 2 should not have traps under them. You can tell a trap, for the most part by pouring a pitcher of colored water down the pipe. No trap equals the water rushes away & doesn't bob up & down as it drains to then just sit there when done draining.
    – Iggy
    Mar 8, 2016 at 3:08

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.