Bumping this thread because I'd love an answer to this question. I'm planning to do the same thing, i.e. buy reno and sell for profit, and I'd like to know how GST works in this scenario.
For example, let's say I do 3 renos in one year. Let's say each property was bought for $200k and sold for $250k and after costs netted $20k (not real numbers). Would my GST turnover be the total of the sales, i.e $750k? Or some other figure? If my total profit was $60k, i.e. less than $75k, would I need to worry about registering for GST? If I'm not doing new builds, or the renovations aren't substantial, would the sale still have a GST component? So confusing!
Any advice/links/resources will be gratefully received!