You may not need a downpayment. If you're aggressive about looking, you may (and should) be able to find a property where the owner will finance.

You may also be able to find a property where the owner will allow you to rent until you've gathered a downpayment and can go to a lender for the balance.

I say this from experience - a longer drive to work is much easier when you know the homestead is safe and secure. Plus, there's no guarantee that you'll always have that job. I finally learned to put my family's welfare at the very top of the list - job convenience has dropped down almost to the bottom!