Thank you all for your valuable advice here.
I am definitely going with pebbles and not worry at all about termites. I think White and Black pebbles will transform my front of the house dramatically, with some cactus, etc.
I measured the height between my soil and pavement as 45-70mm as shown in the picture below.
To me, it seems like the surface is too low for turf.
Do you think, I need to add some soil and bring up the level to flush with pavement?
You might like to add a 50mm layer of Scotts Lawn Builder 25L Organic Lawn Soil Topdress & Underlay. Not only will this raise the lawn level, but it will provide some organic medium for the grass to grow in. It is possible to grow grass in sand though it's fairly free-draining and won't retain much water for long. Because of this, you'll require frequent waterings, and the lawn will be harder to maintain overall without the underlay.
I think you are right. The ground consists of a higher proportion of sand than pure soil. Adding this organic lawn soil should help in this case.
Since the ground is sloppy, I might need to distribute the soil more towards the pavement and less towards away from it, as you can see in the image below.
Rainy weather in Gold Coast during the weekend and PH on Monday did not really help me to achieve on this weekend. Left this job for next weekend.
@Sugar always good to have any areas near the house sloping slightly away from the house. Reduces the risk of seepage under the house & flooding.