With zero knowledge and zero skill I have almost single handily built an entire mainly underground house .
So that tells you everything. You can do it all . I estimate in Labour savings ; I’ve saved maybe 500k ( if I had to employ to build today ) . Taken 7 years - not finished it …
You have money then get it built .
You have time and tenacity- then you build it .
You have no money and no time , you sell the plot .