equationer

Hi there, I'm from Reading. I have never owned a house - have always rented. I was thinking about buying one but wanted to see if building one would be better. I am no millionaire , just a self-employed delivery driver doing some extra side hussles，and saved enough to put 1/3rd of down payment on a reasonable semi-detached house around here. So I will be sourcing the finance to built my house. My total budget will be between 300K to 400K right from the finding a plot to completion. Please don't judge me if I'm in the wrong place. I have been looking at several ways to build a house , and I do think ICF to be the best. I don't intend to build anything big, and the plots I am looking are no larger than 250 sqmeter and hopefully within already established residential postcodes. So ICF for a small house I think would be just as reasonable to build. One of the possible option I was looking at is to build a one storey dwelling with ICF, and add one storey built with SIPs on top of ICF dwelling. I don't know if that's ever been done. Would it be more expensive than a 2 storey ICF dwelling. I intend to have a garage , not for the car, but for a worktop where I can work on several projects. So The ground floor I imagine still needs to ICF given its excellent strength.