Yarnos I agree with Natasha. Your existing architect will have (well, should have after working on your existing design) an intimate understanding of your site, soil conditions and implications of levels on your design. He/She are in the best position (given his/her understanding of your brief and constraints) to illustrate to you how a design solution such as this can work. No one on this forum is currently in a better position than your architect to explain this to you and outline the affordability of it as an option, based on your site, your brief and your budget. You can visualise this concept by letting your architect demonstrate it for you. If they are not demonstrating it, then you have the wrong architect I'm afraid. And if you are not empowering them to use their expertise and provide design solutions for you, then you either need to get another architect, or be a better client. Architects and designers - the good ones - are creative problem solvers. They are design detectives in the art of living well. They spend their entire professional and personal lives and time studying how people live, and how to create environments (and homes) for them to support them living better - more functionally, flexibly, beautifully. The talent of a good architect/designer is invaluable in elevating your lifestyle ... of taking the 30 year mortgage you're about to wage on this bet of building a home, of taking this massive investment, and turning it into a physical building that is your heaven and haven, your place of sanctuary and inspiration. They expand your vision, interpreting both what you say, and what you don't, into a result that is beyond your imagining. That's why you hire them - because you can't do what they can, and you need them to bring your dreams into life in a way that's better than you could have ever anticipated or created yourself. As a client, you have a responsibility to brief them well, trust them to do their job, be open to their ideas, and be guided by their expertise. The not so good architects and designers are simply drawers and documenters. They 'convert' your brief, your expressed wishes and shopping list into a floor plan that fits, and can be built, but that's simply it. It's a house, not a home. It functionally will do the job, but it never reaches its full potential. And so your life in it never reaches its full potential. You unwittingly compromise, never truly aware of how different, how much better, things could have been. The catch is, you've made a massive investment, and created something that will outlast you and become someone else's home too. So the impact is generational. Your responsibility as a client to these architects and designers is to understand the difference, and ideally not work with them - not unless you can show design leadership yourself. Work out which one your architect is and make a decision. Trust them to do the job properly for you (and give them the ability to do it), or walk away and find someone else. Regards Amelia Lee Undercover Architect www.undercoverarchitect.com amelia@undercoverarchitect.com

You are most welcome, I have always said that I haven't been put on this earth to "Hug" toilets, so I'am wondering who is going to clean all of these Bathrooms. Our two kids a boy and a girl had the upstairs "apartment" which they and all their friends loved. I have added a timber stair case for fun, there's plenty of space but you will need to decide what you want to do in the attic and place the stairs to open up into a tall space. I have also turned one of the ensuites into a powder room. Your Jacaranda's only drop once a year!, you used to be able to trim them by 25% each year, you would need to check with your council, we were on the lower North Shore, I think you should consider the patio side of the house and make better use of that, is the front deck something you plan on adding because of aspect, and plant some tall growing hedge ready for the apartments. Our kids Attic desk/study space over looked our pool in the rear garden. With respect to using the formal rooms for bedrooms, you will find that once you have your large family/alfresco and the kids have their upstairs space if you still feel you need it, it would make a great office. You spend most of the time there only using only using the front room in the evening for watching movies etc. I have had another play with my floor plan, I think if your wife sees this you may be in trouble, it's a Master Suite, the free standing bath in the window alcove with white timber shutters for sun and privacy control..... Iam' adding a couple of photos of our old Federation which wasn't protected, when we sold it the new owners removed all of the Fret work & posts replacing them with simple timber posts. The front rooms which we didn't use very much once we opened up the rear rooms into a family area. The room with the Bay window had a Baby grand sitting there, we sold the piano before we took the photo. Cheers

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

could suggest that you make the extension a separate building connecting via glass or other enclosed walk ways ie: one extending from the passage into the family and another between the kitchen and pantry they only have to be deep enough to stop the gutter from the original house touching the new house which could have amazing sloping roofs and high ceilings. I also notice that I haven't marked a laundry, that shouldn't be too difficult. You could consider extending the carport along the boundary which could include a laundry, WC within a pool house for the NEW Pool. Many ideas as many ways to do things cheers PS: do you want to share where the house is, must be one of the wine country areas in , guessing SA,VIC,Hunter Valley