How to add a second toilet?

[chatz]

We’d really love to add a second toilet to the house, but we don’t know if it’s feasible or what kind of budget we’d be looking at. It’s a 1 story brick veneer 1970’s house on stumps. The sewer line to the house runs down the left hand side of the property along the bathroom wall (as you can see in the encumbrance plan in red, we are Lot 3). The plumbing to the back toilet is quite old with an above ground pipe on the outside of the house and stink vent above. We’d love to keep both the shower and bath if possible, so thought maybe put the toilet where the vanity currently is and get a very slim vanity for the remaining wall. But how easy would it be to plumb in a toilet there, even if the existing plumbing in the house is pretty old? We considered a full bathroom reno but were quoted $40k without materials so ideally an extra toilet would be a simpler option.

Thanks!

Here are some images of the pipes outside the current bathroom wall plus what the toilet plumbing looks like for the current back toilet.

[MitchellMc]

Welcome to the Bunnings Workshop community @chatz. It's terrific to have you join us, and many thanks for your question about installing a toilet.

Adding a second toilet to your home sounds entirely feasible, especially since your house is on stumps. This setup makes it relatively straightforward to access and modify the plumbing underneath, which is a significant advantage compared to homes with a concrete slab. The sewer line running along the left-hand side of the property should allow for a connection with minimal disruption. Placing the new toilet where the vanity is currently located seems like a practical option, especially if you're open to installing a slim vanity to optimise space.

However, there are a few key factors to consider. First, the proximity of the proposed toilet location to the existing sewer line will influence the complexity and cost of the project. Second, the age and condition of your current plumbing may need to be assessed to ensure it can handle the additional load. Finally, any new toilet installation must comply with plumbing and building regulations, including proper ventilation, similar to the stink vent used for your back toilet. While this will be a budget-friendly option compared to a full bathroom renovation, it's a good idea to get quotes from licensed professionals to better understand the potential costs and scope of the work.

Please let me know if you have any questions.

Mitchell