I would think I would want direct access to the bathroom if a door makes sense floor plan wise. Between the two I'd nix the door into the laundry room. Why do you want to access the bathroom from that room? Is there no door into a hallway for general access?
To comply with Building Regs, yes you do require a lobby area, ie two doors between a kitchen and a bathroom. But, this only applies to new construction or changes. Do you really need to have two doors between a kitchen and toilet or bathroom? Find out if it's still the case.
It's my understanding that there are exceptions to the two-door rule, allowing you to have one door. The additional requirements are that there must be one door, the bathroom must have a sink within it, and you must meet all other requirements for plumbing, including fixture spacing, ventilation and drainage. You'll need to verify with the Building Code of Australia.
While I would recommend highly having a double door to create a lobby between the kitchen and toilet to prevent odours travelling into the living/kitchen area; even with a fan in the toilet, in this instance it was permitted without a lobby; ie accessed directly off the kitchen provided there was a fan in the toilet. We really like and know it's the one for us and that, but yesterday we took out parents to view it and they noticed that the bathroom is right next to the kitchen with just one door to separate them. They said that the law states that if a bathroom is next to the kitchen there has to be two doors to separate.
The good news is, even though food next to a bathroom sounds extremely undesirable, there is a way to get the two close but still comfortable. To do so, you will need to mind certain bathroom next to kitchen regulations: planning a home. Can someone please update me on the current Regs where you have to walk through the kitchen to get to the bathroom.
Do you still need 2 doors to seperate. Do you need two doors between a kitchen and toilet? Doors & Handwashing Previously there was a "two door" rule enforced between any toilet and the kitchen but these rules have now been relaxed as long as the new bathroom includes a sink for hand washing. The door should fit well and act as an effective barrier between the kitchen and the bathroom.
If there is a shower or bath, ensure that a window can be left open or make use of a dehumidifier for supplementary moisture removal.