I have seen a lot of questions regarding construction of basements, but what i want to know is :
1) has anybody, any idea of construction/excavation of a basement in an already existing one story structure?
2)can it be done (realm of possibility)?
3)will it not be dangerous to the existing structure or will it affect it any way (considering the existing structure was build some 25 years ago)
4)do we have such expertise to keep the structure safe while excavation land below it?
5)and what will be the estimated grey structure cost of excavation and then building of basement