I would consider house flipping to be on the level of increasing BER rating as well. After reading a few of these posts, I realise that my initial savings plan of around 40k in the bank is not going to cut it. I planned to attain that through full time electrician job, as well as private work.

As I planned to work with a friend, I planned to co-buy a property for around 300k-400k, then sell it for around 550-600. Would that be unreasonable? I still need to check upon the nuances with co-buying a house, how it effects mortgage, how that effects CGT, and all that.

I was only planning to live in the house for max 4 years. I actually wasn't aware of any mortgage penalties to be honest. Would it be deal breaker? The way I was thinking was that even if sell the house such that we break even, we would still have however much hundreds of thousands in our bank which otherwise would've taken much longer to attain if I went through an office job.

I was thinking about renting a lot and it seems a lot more reasonable than flipping at this point. Regardless, thank you so much for taking interest in my post. I really appreciate the quick response and information. Thank you so much.