It will probably be a material which will become dated. Given the number of programmes on TV dealing with renovations on limited budgets (not the rubbish ones where it is a game show in a different format) it is becoming a 'fad' material so in the future a plywood interior will be dated to the early 21st century. The material just like colours will go out of favour and back again in cycles.

@Tribble - the situation is the same in Em Bee's part of the world as in ours. Aging demographic, lots of immigration and also internal migration, and of course offshore buying. But where I live, the issue isn't so much competition, as the inability of builders/developers to read the market. Our own builder (small builder, one project at a time, some of them industrial, not housing) told us that the two-story houses in our town were simply not selling that quickly, whereas the one-story houses were listed and gone. (He sold us our house before he tore down the old one, and sold the other house on the block about 3/4 of the way through the build and before it was ever listed. The two story house around the corner from us was on the market for 8 months). I'm not a huge fan of government intervention in housing (I saw public housing in the UK and that was not a good thing) but I do think strong regulation on foreign property buyers is appropriate. That said, I also think the builders need to get their heads together and recognize that there's a boomer population that has a bit of money and wants something different than the bog-standard two-storey box house. Time for the developers to catch up. Okay, sorry, second rant for the day.

Our house is similar, but we are empty nesters and down sized about 4 years ago, our needs would be a bit different to a growing family, we are currently in the throes of having two smaller rooms made into one area to further open up a previous renovation to give us a bigger open space..we also have an ensuite and a combined laundry / second laundry space. The good thing is that being a brick veneer house the reconfiguring is relatively easy with modern technology and big beams. As above try and have a big open space, we have been out of our home for a month now and still a way to go, add living away from home to your budget or stay with family. I will try and post the plan but here are a couple of journey pics ..the last photo was before trying to show how the two rooms decided the space making the living room very small and a bit dark...the aim of this project is to have space for a bigger gathering than about 4 people before overcrowded. Light is really important, nice big windows essential, the darkness of the living I thought I could live with, but it did get me down, I a, looking forward to having a much lighter space

Not sure how it would go in Brisbane but what about trying a conifer? They grow fast and very tall. You can shape them or leave them natural. They are plain and certainly not tropical. Maybe speak to a local nursery and find out if they would grow in the sub-tropical climate of Brisbane first, as they are usually in colder climates (Sydney and south). Leightons Green Conifer – Leyland Cypress http://www.evergreengrowers.com.au/shop/hedging-screening/leightons-green-conifer-leyland-cypress/ Your quite limited if there's not enough sun and you dont use bamboo or tropical plants. Many other screening plants or hedges wont get tall enough for that space and climate. I hope you find something.