Would i be required to have any formal teaching qualifications?
If you're taking people's money for it, yes. Also, the market isn't good at the moment.
I have contemplated starting my own business in Poland, as this is how ive worked in the past. Could anyone tell me how long it may take to start my own business and are there any cost implications.
The paperwork is annoying but straightforward. Anything else depends on your business plan. What sort of capital are you looking to invest? If you want limited liability there has to be a certain amount of share capital (50k zl when I last did it).
I have some experience of property development, is this something which is common in Poland? Does anyone know if there is scope to do this in Poland?
Quite high proprty prices in warsaw, but a very good letting market provided you're there in person. The Polish equivalent to Capital Gains Tax is an issue. So is VAT if the property is over 250sqm or on a luxury development with communal pool etc. Unless they've recently changed that.