What's your climate?

There is no need to have bedrooms on the south if you have enough land to do otherwise.

North is best.

https://www.yourhome.gov.au/passive-design

the best way to make a comfortable plan is to add furniture, doors and windows to help understand how you will live in the house...eg how would you use the space next to the kitchen and where would you place a TV or dining table or play area?...this plan is almost 400 sqm but do you need all that space and could the room size and or shapes be modified to make a simpler roof? what is the size of your block and please describe the local climate and share a rough site plan showing the location of the proposed building site with approx distance from proposed house to all fences, add the driveway from the road and include a parking area, are there any existing trees, show direction of slope of the land, location of north and any views...do you need a septic tank, water tanks, outdoor drying area or solar panels and do you plan for any extra sheds, a swimming pool and alfresco and/or more verandahs? what is the number and ages of the people who will live in the house or stay over regularly ...your plan is a good start but a home on acres should be very different from a house in the suburbs

Thankyou for your comments! We are in a hot dry summer and cool winter climate. Pretty much desert climate. Our land is completely flat so not much in the way of views and not many trees around either. South of us is a shed. We put master and ensuite at the Northern end to keep it separate from the other bedrooms.

Agree with previous comments on roof line, firstly it costs more but more importantly rural areas are prone to bushfires and having that many valleys in the roof is more area for debris to get caught in.

So north is to the right on the plan? Usually it is shown at the top, but it useful to indicate it with an arrow to be clear. I just realised, I think you have shown direction, but it is obscured by the button to minimise the image.

One of the bedrooms has no option but to have a west-facing window, which is the most undesirable.

How close to the road is the building envelope?

Being on acreage means having the space to orient the building precisely for best advantage, and your climate means the house needs to be heated in winter and cooled in summer.

Did you look at the link? This page has some very good diagrams that explain how orientation works to reduce heating and coolng costs.

https://www.yourhome.gov.au/passive-design/orientation

I don’t mind your plan. You have the land, and if you have the budget to build and maintain the home then that is workable. I would twist the whole plan so that the family is on the north side, therefore the long parts of the home would be north and south, and the garage protects home on the west, and you will get the morning sun on the east, master bedroom side. If you have cooling cross breezes on this land, where will they come from? Ensure that if you open your home to cross breezes will they travel through the home, or will they be bottlenecked and unable to circulate correctly. I have attached the orientation of the way I would face your plan, in red. Your written orientation is also highlighted in purple.

Also, if this acreage is in the middle of the country, would you require a formal entry? Country homes always have a very informal arrival point. It depends on what you are wanting to achieve, Are you going formal “estate home” or Australian country casual home?? I would also look at separating the garage from the home, still have it on the west side, but with a covered breeze way to connect to the home. Again it depends on what your overall aesthetic intent is.

some variations for you to consider

Something completely different using the house to block weather conditions on your acreage and form a courtyard

,House faces the road/North so should be set back, the driveway gives access to the garage and the Shed at the rear south, plus allows space for planting to help shield the west side of the building.

Access from the garage into what could be a games room or a longer verandah or be guest accommodation. These are all basic ideas that can be changed

Like that design a lot Siriuskey. A easier roof line, lots of separation where required. Lots of ways for cross ventilation. No formal entry. Seems a lot more suited to the climate that has been described by hnx_Aus.

HNX are you a Canadian living in Australia or in Canada?

I’m in Australia! Oklouise Thankyou so much for your design! It’s honestly amazing and you must’ve gone to so much effort! We love it! And Siriuskey Thankyou so much for your design too, wow I’m amazed at the generosity of this group! We’re just waiting on a quote back from our builder hopefully it’s not too much!

Did you look at the diagrams in the link? If you take into account how the sun works with north facing windows, and avoid anything which diminishes that advantage, you get free benefits which you cannot add later. It's the most basic thing to get right at the very beginning with lowest cost, and which you can't add later.

We built a home with the living area and kitchen running north to south with wide opening doors at both ends, like in siriuskey's design. The breezes are fantastic! Makes the home soooo comfortable in hot weather. In the winter, the north aspect means the sun pours in and warms the room beautifully.