Plumbing – What do I need to do to split a washing machine hookup to allow adding a dishwasher

dishwasherplumbingwashing-machine

In my new (1836— just moved in) house I have a washing machine in a, um, short hallway? cupboard? leading from a kitchen to a bathroom. Above it is a shelf. The plan is to move the washing machine up onto this shelf and put a dishwasher below.

Here's what it looks like now:
washing machine under shelf

The washing machine is presumably a cold-water hookup + waste. I've read that dishwashers take a hot-water hookup. Are we already into call-a-plumber territory?

The shelf I want to move the washing machine up onto looks to be well-supported, but how can I tell whether it will hold a full, spinning washing machine?

Best Answer

In the US, a general contractor would do it, sub-contracting all the plumbing work to a licensed plumber. If you can do all the work that doesn't involve plumbing, you can call around and get estimates, and choose a plumber you like.

From the photo, it looks like you will need to make the support stronger, keeping in mind that the washer is full of water and its center of mass shifts rapidly during operation. You will also need to robustly attach the washer to the support so it doesn't vibrate off and fall to the floor.