Here is the rest of the floorplan oklouise. The built-in in Bed 2 is 600mm and in Bed 3 is 550mm, and this space is in addition to the measurements on the plan. Walls could be moved about, but we need to be able to live-in during renovations. Also the slightly wider section of hallway adjacent to Bed 3 acts as the main entrance so it really needs to remain at its current width to be practical. The 'study' is more of a study-nook in an extension of the hallway leading to a detached garage and workshop, so that is why there is a external door. Thanks for any ideas you can offer.

the other thought i had was to swop the bedroom with the wiw and ens so that the entry to the bedroom is from the hallway and the ens and wiw are facing the rear..some variation of this idea would allow a north aspect for the bedroom and bigger wiw and ens and the "bump" from the hallway adds a little more space for the entry and adds to the interest for the long hallway but is not essential

My daughter ran her business from her bedroom until they could afford a 3 bedroom house, their 2 bedder with two boys and no where else to fit an office was a very difficult time which thankfully they all survived. Having your office in your bedroom should be avoided at all cost, as you never leave the office behind as my daughter found out. Your bedroom is where you go to relax , I certainly wouldn't give up my sanctuary for anyone, even my kids. You are there full time so it makes sense. Your house already has enough rooms, except for making a small change to allow for another bedroom albeit small next to the bathroom as per my suggestion, Both of these rooms have space for the boys to have a desk (they don't need a lot of storage being part time) The desk in the living area can be built in to hide an office. This is a low cost solution and won't damage resale value. If down the track you can afford the new deck, try to work out to fit a room underneath as a hang out (media) area for the boys. not sure about WA but rooms like these in some states can have ceiling height at 2100, depends on what name!! you give them. My son is in a similar situation to you, except he now lives in a Studio Apartment in Sydney, so when he has his two kids 50 50 they make do in that space and seem to manage very well.

This is the downstairs plans (colourful agent ones), I am onsite at work at the moment and don't have access to the formal plans. There is an area added onto the back room, opposite the kitchen heading out towards the backyard. Works have already begun. This area (6.2x3.8) (not shown in these plans) is designed be an indoor/outdoor entertainment room, by the pool. Please feel free to provide feedback relating to the master/office space.  I do not require a full time office at home, only in the event of a level 4 lockdown plus some after hours work being done from home.  We already have an office/warehouse- separate from home.