Thanks for suggestions so far. Unfortunately, adding a second toilet is not just possible unless I forego one of the bedrooms, which I am not prepared to do. Also, as with many terraces, the access to the courtyard at the back is through the house, and I wouldn't want a portaloo carried, or serviced via the sitting room. I have looked at all the possible options, and discussed this with several builders and bathroom designers, and other than shutting up shop here for 3/4 weeks, there is just no answer . . unless I don't disturb the waterproofing and keep everything in the same place and be happy with updating the loo, vanity etc. I am happy with the wall tiles, so it is just the floor that I would like to change. Thus the thought of tiling over what is already there . . .

try to include space for a chair and/or some coat hooks and hangers on the back of hinged doors and a small bin can fit inside or under a wall hung vanity ...our bathrooms include a chair, waste basket, small free standing shelves and a towel rack in timber and rattan and i think complement all the chrome and tiles

Hi AndrewJason, I love cavity sliders. they are there when you want them but not visible when you need the space open. Having said that they cost more, take a bit of wreckage to set up and in you WA case you will be wrecking brick walls to put them in which might be a stretch of mess too far. BUT you will need to weigh up if they are worth it in the end. I do not think the build will be too bulky in the kitchen/dining because it will be superbly practical on both sides and it maybe just a matter of what you are used to. Not sure about "Average Joe...…" we are all good at somethings, mine is plans, function, practicality, solar. Yours might be brain surgery, empathy for unwell folks, kinda or you make the best seafood lasagne in the world... we are all needed to make for a great world: and it really is that!!! Good luck with your splendid home: I think it is beautiful. And PS if you do make the best seafood anything I better have your address....!!!!!!! MK

The term used is universal housing design. that might help you find some resources. https://universaldesignaustralia.net.au/category/housing-design-guidelines/ A lot of agencies release pdfs and guides with info like what standard measurements etc for halls and kitchen benches etc. I wouldn't install anything specific like because it will be easier to source those as required. but the things like space and layout certainly need to be done now! Access in an out. When I used a wheelchair we really struggled to find houses to rent I could access. the best we could do was a house with 4 steps in and out, and my husband had to carry me up the stairs. generally speaking wider passageways and traffic zones. You need space around furniture placement for mobility aids and wheelchairs. A shower that is open and is continuous with the bathroom floor. non-slip tiling. A bench or sitting area in the bathroom for changing and showering. As someone with mobility issues sometimes things that don't seem an issue are, like when your mobility is affected even slight level changes are an issue. my most frustrating level change is just the 5cm rise on the kitchen tiling and around the fireplace hearth. It's hard to explain but the small level changes are harder than stairs! So a flat floor that stays flat with no lips or trimming or metal capping on the carpets is important. Overall, keeping things low maintenance because any illness or mobility challenge brings fatigue and things can get too hard if the house is fussy. simple no fuss surfaces and hard-wearing materials. I really like cork floors as they are easy to clean and if you fall its not as painful. Good connection to outdoors and a nice view. The worst thing is it becomes harder to get out and about and sometimes you aren't well enough to, so for those days staring at a blank wall is the worst, an interesting view with good bright light and fresh air helps a lot. . don't use taps and door handles that twist and turn on, use sliders and knobs and handles that you push down with your whole hand to open. Good easy access to the home for emergency services. A wide front door that could allow ambulance access. One home I visited with universal design positioned bedroom and bathroom on opposite sides of a wide tiled entrance area that also had the laundry in a cupboard. It meant for good access to the bathroom and easy laundry use, and good emergency access to bed and bathroom in case of a fall. they also had a help button in the bathroom. but I would suggest phone access across the house or a handy (Dry) mobile phone nook works just as well. a bathroom close to the bedroom, but not so close that a partner is kept up at night. Think about the overall traffic flow, if you have to move too far and cross back and forth a lot it's going to be really exhausting. Disability modifications actually kinda suck and aren't always useful. The wheelie walker i was supposed to use as I learned to walk again actually was so heavy it would exhaust me, I find grasping dado rails and chairs and doors is often easier, so an oversized timber dado rail that could be grabbed hold of would be useful, and making sure its not far to sit down and rest. a chair in the bathroom, a chair in the bedroom, a chair near the front door for sitting and sorting shoes etc. they can be pretty corner chairs and not disability chairs iykwim. often just good efficient design and layout are key. Flexibility so that things can be adapted to suit specific requirements.