Help me renovate and legalisation of my house

I live in 45+year old house and living there started to be hard. I live here with my fother,mom,grandma,my wife and my 4 year old son. as my salery is $500 a month i cant do any thing more then live from month to month and pay the bills and my house started to be a helth problem for me and my family. Biger problem is that my house didnt go throut legalisation process so there is allways a chance my family will need to move out and that my house will be demolished. I dont realy have any other option then to beg you to help me. Dont realy have anything more to sey so God bless you all.