Instead of breaching someone's copyright, I would start from scratch and design an economical clean and simple design. What you have will fit into suburbia nicely!

Write up a design brief. Dot point number one should have the budget.

Go through Houzz and Pinterest and start a board of images.

Contact a couple local designers and discuss the project.

You can tinker with floor plans as much as you desire but the brief is first.

This will dictate what decisions you can make.

Is this too be a new build, a renovation/alts & adds, etc.?

Don't just think about the list of rooms inside. Think about how the design relates to your site. Where is the morning sun? Are there any views? Is there any overlooking from neighbours? Where will be the best place to sit in winter? Is the alfresco area a good space to dine outside in summer? The best homes are designed to respond to their environment. The worst homes are those designed with as much thought as a shopping list of rooms, without any regard to what is around them. Preparing a brief, carefully considering your budget and your future household needs, and engaging a design professional will mean that you have more flexibility to choose the best builder, and not fall into the legalities of copyright infringement.

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Best of luck,

Dr Retro

of Dr Retro House Calls

Love that Range hood Dr R, I have the same that I saved from our kitchen Reno to use for our BBQ

we can't use a commercial plan unless your builder owns the plan and agrees to the changes but my first suggestion would be to keep the roof much simpler but we need to know the direction of north, the dimensions of all the rooms, the length and width of the block to make any other suggestions

seems generally functional, but where r your site boundaries. How will it fit on block, what outlooks will each window have, where is the private open space, aka back yard, what slope is there. will you need a step from garage into house? i Assume all the dashed lines across openings are sliding doors. If not they should all have doors for sound control, privacy and for wiw moisture barrier from en-suite. I’d like more storage in main bathroom and towel rails for 3 bedrooms. Outside door for laundry. And broom closet

Copyright infringement issues aside, have said it before, will say it again - design from the inside out starting with furniture placement, room use and flow.... doors, wall and windows positioned last. Comes down to budget balanced against your needs. Room sizes and proportion should be defined by their function. The most important investment in your home is in its design, the best outcomes will typically be achieved by engaging in a design professional. Best of luck PD :)

www.pauldistefanodesign.com

how about making sliding door between kitchen and pantry? a sliding door is better, I think

subject to site conditions my suggestions include some ideas to make the roof shape simpler, the ensuite and wiw less cramped, the media (night) room can be a multi purpose space and the kids (daytime) retreat has closer connection to outdoors and both can be opened to the family room...the laundry is bigger and has easy outdoor access to the toilet and the walk in storage has been converted to more generous built in storage space... the total floor area includes the garage, alfresco and portico but windows need to be designed to suit views in and out