John C Daley wrote:I doubt you will need an architect to build that.
In Australia we use Steel garage https://alansfactoryoutlet.com/metal-garages-missouri-mo/ kits and here is a company near you I found.
Looking at your list all items are easily created.
I would start with;
- the basement excavation
- basement slab, maybe not full size
- brick walls
- Suspended slab for the upper floor
- Have shed built on that.
As for your other points
- Metal roof is a perfect medium to use
- Details of rainfall collection are detailed in my signature
Patzcakes Mitchell wrote:I used Gorilla Crystal Clear waterproof patch and seal.
You can watch six short videos about how I did it here. What you see is what you get, I didn't edit anything. Voltage test included.
https://youtu.be/nhHwDZ-YIeE