IP developed into 2 townhouses CGT question

Hi Guys
First time post here.
I have an interesting question re CGT on a property we have built recently.
We bought an old house in 2010 with the plan to renovate and make it PPOR.
This was idea was scuttled and decided to develop and build 2 townhouses instead.
The planing and council BS and issues had taken 5 years!!!!
In the meantime the house was rented as an IP.
We have built the first unit and have been living in it for 6 months now; and are just about to complete the second.
We invited an agent to look at the near completed unit for either renting or selling purposes.
He came into our unit to discuss and loved it and found a buyer for the one we are currently living in.
He has come up with a great offer above market expectations, and the buyers also don't want to wait.

So, my question is after living in the house for 6 months do we qualify for CGT exemption?
we have a big decision but don't want to be slapped with a tax bill at the end?
thanks in advance

 

CGT isnt a factor for profit making or or other enterprises. Personal tax advice would be a good idea to address gst and tax

 

Were you always going to live on the townhouse that you built?

 

Even if on capital account the main residence exemption could not apply in full because the property was rented out before you lived in it.