If your kitchen 'flowed' ( no pun intended btw ) the other way , I'd be worried , but as the door opens onto the island , and theres that slight wall , I personally don't think its a major , unless you have a lot of guests around meal time -- they'd probably feel a bit self-conscious , almost being watched coming and going to the loo .

Going through the laundry is probably better , IF you are tidy and especially if you do the laundry quite upmarket -- say a tiled floor , modern appliances , etc . My laundry is treated as a utility room , close the door and open it only when used haha , so a WC for guests would be no good for me .

Swapping the rooms will create as many problems as it solves -- the doors ( especially the external one ) , the plumbing , redecorating both rooms whether you want to or not .

I would def access the bath from opp the stairs. Either option could work.
How many bedrooms. Is there a bathroom upstairs. What do you need to accommodate downstairs in bath and laundry? Add all plumbing points to plan

Actually , that's a good point Kate -- are the 2 external doors near each other necessary , and if not , which gets used most ? I just wonder if its worth considering ( and/or is there space / height ) to move the powder room over 'under the stairs' -- then maybe turn the existing one into a pantry or butlers or study or bedroom for dwarves or whatever you want ?

Plumbing points included. Red is the current toilet, blue are water taps.

Under the stairs isn‘t very spacious, i dont think adding a toilet in there would be possible.

Both rooms are in need of a renovation, the entire house is 45 years, original and everything will be upgraded at some point. Our focus currently is downstairs before we tackle upstairs.

We have 4 bedrooms and 2 full bathrooms upstairs.

2 external doors not necessary. The one in the current laundry is existing, we built in the one off the kitchen when we redesigned the house layout.

As far as the doors , I was meaning the 2 on the 'curved' ( front ? ) wall -- one 'under' the stairs , one at the base of the stairs .

Ah sorry. The one on the left is front door, and the middle is to the garage. Kitchen and laundry lead into the backyard.

Attached for clarity is the old floorplan (ignore the red lines, those are the walls we demo’d).

Clearer now -- yes , walking in the front door and having a toilet there mightn't work haha .

I would make access to powder room through the laundry, as per your option B in your post.

I would agree with going through the laundry and as someone else suggested make the laundry really nice

Vote via laundry room. You need an “airlock” between a powder room and public area and particularly the kitchen.

I would access powder room through the laundry. Possibly halve the powder room and put a pantry on kitchen side.

Choosing option b is a good idea so toilet is not directly off the kitchen. You could make the laundry into a ‘hallway’ through to the powder room by putting everything behind cupboards - that way you don’t have to worry about keeping things tidy. I am sure you have had your fill of wall removals but if not load bearing you could move the wall to make a smaller powder/larger laundry. That said if you have other family living with you, including a vanity, power point & mirror in the powder is a great idea as it creates a mini bathroom where one person can brush their teeth do their hair etc while another is using the main bathroom.

as already suggested access through the laundry is better than directly of the kitchen and living areas and with two full bathrooms upstairs i would convert the bathroom to a powder room plus deep storage

Oklouise i love that idea, it lools great.

our issue with the house is upstairs is concrete slab, everywall downstairs is rendered brick and load bearing. So to just cut a door is a $4k exercise. Removing the wall even partially or moving the wall would be even more costly and require engineers, beams etc.

However you have given me to idea of, could I do that powder layout but not cut open the wall between laundry and powder. So it still had that “airlock” but not directly onto the kitchen. Wondering if that might be a happy medium? Utility cupboards with a powder off to the left?

I would swap laundry and powder room around. You said the house is old and both rooms need redoing. That seems like a better room arrangement to me. Not sure how many people will be living here but if you are anything like me (mother of 3 boys) I spend halif my life in either kitchen or  laundry so to have them next to each  other seems fantastic to me.

Check your staircase. At that age it will be designed to an old smaller standard. That had shorter tread depth back then. If you touch them at all you will need to comply with current standard which will make them longer. So check with your builder.

A lot of work would be required to change plumbing ie toilet on a concrete slab.

I think your thinking of an enclosed powder room, and drawn by oklouise solves your challenges, with a better budget outcome.

I did this before seeing your response

Similar to OKL making the laundry and Powder room bigger Check out Saniflo for moving toilets

Just block up from kitchen and knock doorway through laundry, this wouldn’t cost $3-$4,000.

K s Unfortunately it will be $3-4k by the time the builders cut out the new opening, add lintel support, dispose of the rubbish, built the door frame and patch the existing door. I’ve had 3 quotes are they are all consistent.

Our house is solid slab upstairs, all the walls are brick and load bearing (we consulted an engineer for our wall removal in the main living) and go right down to the foundation even though the bathroom and laundry are suspended slab. If it were timber frame it would be a very different story.

Oops no drawing this idea makes a great mudroom/laundry/WC with exterior access for any pool

best way to reduce costs is to do some of the manual labor and rubbish removal yourself

last time we removed a concrete slab to rearrange a bathroom there was about 5 ute loads of rubble for the local tip. .renovating is such fun

If cutting through brick block work, we have always left that for the professionals. Once cut, then maybe remove bricks yourself. And the floor in laundry and powder room are also concrete. Again professional tradesman are a safer, but more money, compromise.

Living on the west coast of Australia where 90% of our homes are double brick, we have used professionals for this task...always.

As said previously the toilet behind two doors would be a good option.