What is the process of purchasing a new-build?

Apologies that this is going to be a silly question to most people.
I'm very new to property investing so I'm still not familiar with what the processes are.

Say, I was to purchase a new-build in a good area (for the government $20k rebate) and the build would take 16-20 weeks, how does that work in terms of when I put down my deposit and when do mortgage repayments start?

Assuming I'm taking into account the burden of paying off the mortgage based on rental income, would there be a long extended period where I'll be paying off a mortgage (while the house is being built) without any rental income?
Are there any justifiable Pros in purchasing a new-build, rather than an existing home and getting rental income much earlier on?

Thanks in advance!

 

What do you think are the pros of a new build for investment?

when you say good area, do you mean new, or established area with lots of older houses?

 

During construction, just think of your loan like a credit card, everytime the builders invoices you for a job they've done, you'll have to get the bank to pay it and then you'll start paying interest/repayments on it, including your land loan.

 

Engage a good mortgage broker to discuss these things prior to making any purchase decision.

 

So does that mean that the further off a new-build is from building completion, the worse off I would be?
I will speak with my broker about options, but just curious to know what the "standard" or common practice is for investors who purchase brand new properties.

Thanks!