Hi all,

How much do you all think it cost to build from an old house (40+years old) to the 2 Youtube featured here.

https://www.youtube.com/watch?v=6OFopy6ysb8
https://www.youtube.com/watch?v=8albjm-C89U

I only know the below :

1. removing the stairs and put in a new one for 3 floors will take about 20 to 50k (depending on quality and design)
2. 4 Pane Super high folding doors will cost more then 50k

Thanks