/ Cost to build in Eastern Poland - Ideally per m2
How did you you come up with this figure ? Heating ,floors??
First there would be the cost of the land. Then the cost (and time) of getting the building permit. And the time and cost of getting the water and electricity connected.
Then the builder comes in to do his thing. Next you have a shell.
First you'll need to have the internal walls put in (it says 'building shell' and that will mean load-baring walls only). Then you will need to have it wired throughout. And have the heating system installed. And then have the water and sewage pipes put in (oh, did the builder include in his price a septic tank? Or did his price include connection to the sewage system? You did remember to sort that out, didn't you). Then you're ready to have all the walls plastered. And then have the whole house painted (inside and out, assuming that it has been left in a state ready to be painted and already has the insulation on). Then you're ready to have the stairs put in and get the floors installed. Then have the bathroom fixtures fitted and the tiles put in. Then have the kitchen installed. And then have all the electrical fittings done. And you'll probably want to have some sort of hard surface put down for parking a car on, and a fence and a gate too. Then you can finally apply for permission to live in your house.
How terri thingk that all of the above can be done for 120,000zl (she says allow 1,000 per square metre) is quite beyond me: the kitchen alone would probably cost 20,000zl!