I think your layout is generally good. With a one bedroom it's nice for guests to have access to the ensuite without having to walk through the bedroom. One thing I do notice though is that there is a lot of hallway/storage/circulation space in the center of the building (in the two bedroom portion) that might be better used as living space. You could pretty easily make the ensuite in the one bedroom larger for example. The wash house space seems unnecessarily large to me as well. You could push the wall dividing kitchen from wash house almost all the way back to where the toilet door is in this plan (you'd then have the toilet door open into the wash room to the right from this viewpoint rather than straight ahead). This would leave much more kitchen to porch access, which would be nice.

Thanks Susan. I would love to get feedback here from the Houzz community on butterfly roof construction. I know that flashing the valley will be critical to say the least. Whoever does the roof has to have 1. Skill 3. Architectural specs to follow 2. Guaranteed work. How do they hold up in a climate such as yours which is sub-tropical? It's a big project so you will need to be confident in the outcome. [https://www.houzz.com/discussions/can-you-please-tell-me-how-the-water-drains-from-the-valley-of-this-butterfly-roof-dsvw-vd~423763?n=2[(https://www.houzz.com/discussions/can-you-please-tell-me-how-the-water-drains-from-the-valley-of-this-butterfly-roof-dsvw-vd~423763?n=2) And here is a box gutter diagram to check out. I would research the heck out of construction techniques so as to be as informed as possible so that you are able to have a better dialog with the roofer when the time comes http://www.builderbill-diy-help.com/box-gutter.html

I would consider a small retaining wall perhaps 2-3 planks high this will provide support to the bank but also allow the pathway to remain clear and formal. The ferns seem to be doing well but could do with a tidy up. I would also prune the tree so it allows a bit more light into the section to help prevent dampness, you also want to take it away from the house, without destroying it's natural shape. As ferns seem to naturally want to grow there, you could continue that theme. Perhaps some other shade / cooler temperature type plants with some flowers could be a good addition. I am not sure which plants can tolerate the cold Dunedin winters, so you best contact is your local garden centre. You want plants that are lush all year round. Also have a look at other plants growing in the neighbourhood as that will give you a good idea of what does and doesn't do well in your climate. Good Luck.

I have no idea what the relevant building rules are for your area , but I like your 'jailbar' idea , timber ( I'm guessing you'd need to get good solid timber -- no knots that may crack when someone runs into it playing indoor rugby haha ) stained dark -- it would contrast and compliment the lighter honey stained timber . It looks like your idea though is to take it straight across to the window ? I'd follow the existing L shape -- it would make the room a bit darker , but the stairwell would be as light as at present , plus there'd be no extra problems with taller people or furniture up the stairwell .