Assuming that is definitely your toilet waste pipe and they will have to cut the slab to relocate it, I wouldn't stress too much as it does happen quite a bit unfortunately. We had a similar toilet pipe issue in a build 10 years ago, and I basically took photos of the slab cut and the builder at the time then went and got a proper engineering report done.
So my suggestion would be to press your builder for an engineering report, and also take your own photos and records if any slab cuts are to be made. Also make sure the termite guards etc are properly reset when the new piping is installed.
Also keep in mind many of your drainage pipes (eg. from basins and sinks) are designed to be within your wall cavity. We have several pipes currently sitting right under our wall bottom plates....but the toilet ones are all out in the open.
Good luck with the build, I'm sure this will end up being just another minor issue that we all experience during these house building projects.[/quote]
Thanks, that’s good advice 😊 will give our site supervisor a call tomorrow and see what the plan is...because at the moment, they’ve just built the frame around it!! 🤷🏻♀️ It’s definitely the toilet one though.
Hadn’t considered the termite guard, so thank you!