First impressions, great layout, good size rooms.
My only thought is that the home will be dark in winter in your living areas. The winter northerly sun will not enter the home, maybe just in the dining room window.
But depends where you are building, Darwin is different to Melbourne.

You need to maximize the advantage of having North to the rear with more windows on that side and don't waste your ensuite on that side

Is there any reason why you can not angle the home, so the rear is facing directly north. You have a lot of square metres to work with?

You've done this before , haven't you !

A few minor areas that might need questioning

-- The master bedroom WIR seems quite deep , nothing wrong there , but it makes a pretty tight dog-leg on the entry .

-- The master en suite is pretty big , again nothing overly wrong there , BUT the bath is really close to the door , but also the door means you can probably only have the bed against 1 wall .

-- Do you need a wall and door on an en-suite toilet ?

-- I'd probably ask the same about the other toilet/powder room -- 1 ( lockable ) door would give a way better feeling of space and luxury .

-- Is 1 WC/powder room enough for 3 bedrooms , guests and possibly you and your partner ? As soon as you start disappearing to 'your' toilet , children may start following that ?

-- The family room is very large

-- The entry is small -- it looks like you want to impress , the entry will be more 'workmen -like' in comparison to most of the rest of the place .

-- Do you need a theatre ? Will you have a screen and projector ? I love my technology , but I have it all in my lounge -- TV and music and surround sound etc . Apart from attacking the TV with something heavy ( which could happen in a theatre room anyway ) it is pretty much child-proof . Not lecturing , just questionning ) . Just me , I'd probably go smaller on tyhe theatre and maybe play room , maybe even family room , add an extra little bit to each bedroom , and maybe the laundry too -- you've got a slightly funny little hall there to the garage .

Your house , it looks great , and I have different preferences , so just ignore them haha .

@dreamer Thanks for the reply. Natural light was a big factor when we were designing the house. Taking into account that the summer sun is very westerly, and the winter sun is not too far off it. The raked ceiling in the family room will continue right through to the outdoor area to a gable end. Plus a highlight window about the sliding door. Hopefully this plus the living room windows will be enough.

Picture of highlight window and raked ceiling attached.

As for putting the house on an angle, my OCD doesnt agree with that, and it would look odd next to the houses either side of it.

@C P The ensuite was originally on the other side, but it made the master 4mX6m, which was huge!, and a waste of space. We are in desert country, so the westerly sun will be more then enough i believe :)

@User Thanks for the detailed reply mate! It's my 2nd build yep :)

a few answers

- Yep, i'm not sold on the dog leg into the master! but moving the ensuite to the other side makes such a huge Master bedroom, and i dont really want to lose much WIR space.

- great point about the powder/wc, i think only 1 lockable door on the entry would be better.

-Im not sure where a 3rd toilet could really go. I'm happy with 2.

-I like large family rooms. Open plan is all the rage!

- Although 'theatre' is written, that room will most likely become a "formal lounge" type area.

-I agree that the theatre is quite a large room, but its pretty hard to make it smaller in any direction and then makes walls line up?

-I'll revisit the entry and garage hallways for width :P

Cheers!

Family room will be dark with the outdoor living area in front of it.

I personally don't like play room with no window. I like lots of light in a house.

Agree with the others about better use of the north facing back of house.

Good idea about the high gable window. What about another window in the dining area.

You have a play room , a family room , a theatre/formal lounge , and a study . Fair enough .

One toilet in the en-suite , off the master bedroom , that you probably only want 2 people to use , and its the opposite corner to the kitchen/study/laundry , where at least 1 of you may spend a reasonable amount of time .

And 1 toilet for everyone else , including guests .

Maybe its just me , but I'd rejig things , maybe change the laundry and study a bit , and add a 3rd WC and slim basin somewhere in that area . Certainly not essential , but it would probably be better received and utilised than some of the 4 other 'family' areas at times . . . . . . . .

before making any other suggestion can i ask that you enlarge your plan, make some scale sized furniture and see how the rooms function with furniture placed to suit and please describe your local climate

I can see you like the symmetry of the dining room balancing with the other side of the house but it is quite big for just dining but not big enough to add a sitting area. What ages are intended for the playroom?

To be honest it feels as though you've drawn a shape on paper and then tried to squeeze as many rooms in it as you can. The flow didn't feel right and the rear Northerly aspect feels completely wasted. The block seems to have masses of potential. There are some areas are too small and others which are too large. I think you can do a whole lot better.
Sorry if this sounds harsh but I just feel otherwise you're simply tinkering around the edges.

Bigreader, I think the size of the dining room is wonderful. Why would you want a sitting area in that room when there is the large family room next to it.
However, I would take the playroom out, use the front lounge room, unless you want formal gatherings. And I would add a third toilet nearer the laundry, study area, agree with pottsy.
Maybe bring the fridge into the kitchen proper. Saves carrying milk/vegetables and meat product a distance.
Install a beverage fridge in the island for ease of access from outside. Unless you are having a full outdoor kitchen set up.
I understand the cover for the western sun. And the north windows. I can also understand the OCD component of the house being straight on the block.

Could you swap positions of en-suite and wir in master to reduce dogleg.
In study add a glass door to hall for sound control. Also consider making a full width window so you can see out whilst sitting at desk and or window above pc ht on north wall.

I would replace the playroom with an alcove in family room for television unit or display unit. A storage cupboard then, If you have small children, then a hallway from master to minor bedrooms, with hinged door. Put wardrobe for bed 4, on the other wall, then enlarge the bathroom, two vanities, larger shower. You have potential for six people to inhabit minor bedrooms, but have a small bathroom compared to other proportions in the home.

brilliant OKLouise

this smaller version of the plan saves about 25 sqm equal to the size of the dining room or the value of the kitchen and bathroom fixtures and fittings and although my vintage CAD program can't add the extra small gable over the theatre it could be useful to consider a similar gable over the family room with electric opening windows for extra light and ventilation and assuming that there would be a ventilating skylight for the bathroom, we've found that economical Solar skylights are useful in rooms that don't need external ventilation like the entry, hallways, pwdr rooms, mudroom and vanity and, depending on the ages of children, there could be a door between the wiw and bed 4 to create a nursery..it's a great floorplan and will make a gorgeous family home

Some amazing replies here. I'm going to take the time to go through them this afternoon :)
Thank you all soo much.

@oklouise I really admire the effort you've gone too.
I really like a few things you've suggested here. One of the bigger ones Is potentially deleting the playroom to implement what you've drawn above.
again. Thank you very much :)

The play room is there, in front of the children’s bedrooms. It is in a good position for as they age, it will be come their study room