I love pergolas and they do solve a lot of issues. Search the box above for "curved pergola" under the dropdown "photos" and you'll find an idea that will work for you. Don't forget you can drape them for privacy and for sun protection with outdoor fabrics. Post your results for all to see.

Tess, I hope I'm not too late with the following advice. Don't ever paint brick. Your house is a simple design, exterior wise. Paint wont fix it. What's missing is a designed garden. Even the simplest brick house can look like an inviting, lived in home when it has a structured garden surrounding it. For less than the price of paint, invest in a landscaper to design a garden that will soften and greatly enhance your homes street appeal ...and add many $ in value. Painted brick detracts from value and has to be repainted periodically, defeating the purpose of brick, which is, no maintenance. Besides, your house, painted white or cream as has been suggested here, would stand out in the street like a proverbial sore thumb. Trust me, landscape, starting at the street boundary and leave the bricks alone. Good luck.

Ozbern: we had a similar dilemma, lovely backyard and then they started tearing down bungalows and building four story townhouses all around us. I built a single depth pergola along the back property line, the beauty of this is not only the privacy, but it brings the scale of the yard down to make it feel more intimate when we are outside. We also added a 10' x 10' (little over three meters) pergola right up against the house where we had a wall of windows. Will try to find that photo too. We have coral vine now growing in it. Dies in winter, comes back in spring. You can always do more contemporary details if this is too casual.

Thanks for all the great ideas everyone and sorry I didn't explain the polycarbonate a bit better :) This is along the lines of what we'll be using... http://www.psp.co.nz/building-brands/corrugated-sheeting/suntuf-polycarbonate The area is an absolute sun trap and we're hoping to use it as an extension to our living space, especially on rainy days! I've just sent my husband out to get a few pots of different stains for is to try - darkest brown (cedar) and a lighter brown (rustic oak) both by Cabots + the black we already have. Hopefully we can decide between one of those! I probably should have mentioned we will have black aluminium pool fencing running along the top of the second retaining wall - so the real question is do we keep everything black (pool fencing, horizontal fence, retaining walls and pergola) or do we go with a dark (or even light) brown for the pergola and retaining walls.... We just keep going around in circles at the moment. Decisions, decisions! Thanks again :)