I have spent some time drafting a house and believe that 70-75m2 should be enough.
Currently shortlisting builders / developers, mainly to answer 3 questions:
- Will they work on the project of this size?
- Do they have an experience building using "double brick" or steel frames?
- What's the estimated project cost and proposed implementation?
If you can recommend someone who is keen to take on such project - please reply here or via personal messages.