We have so many homes built already, more that there are people to fill them in some places.
This is a very true statement...statistically...yet that does not mean those buildings are all worth saving or fixing...
Wouldn't it be better to fix what is already existing?
In some limited cases...yes. However, in most it would not...
Retrofit homes to be natural homes (strip out drywall, fiberglass insulation, carpets, shingles etc. and install natural materials). Why build another foundation and home frame, when the one that is already there perfectly fine and permitted and all?
That is just it...most even after having certain elements of modernity removed (and or encapsulated in some fashion) are not "perfectly fine." The efforts, both aesthetically and structurally to alter them in the fashion suggested will often be greater than if they are just razed and we start from scratch with an actual..."all natural-traditional design."
So my questions at this point are, one: does anyone know what is legal as far as retrofitting existing homes to be a strawbale or cob home?
Depends on the area of the country, the design/builders actual skill sets, and whether the structure actually warrants such treatment.
and two: what kind of licenses (if any) would be required to do something like that?
Almost the same
answer as above...
As I have followed your queries and concepts, I am excited for your future...at the same time you do need to get that degree (the other way of getting that education is very long and hard.) After that degree is secured...I must ask a few questions...
Have you built from scratch...on your own...more than 10 structures?
Can you design and facilitate a natural and/or traditional building from raw material on your own without assistance from others?
My next statement is not that of a "braggart" but to illustrate some realities of just how much further you may need to travel before achieving your aspirations...
By my 19th year of age...I could split stone, fell
trees, form cobb and understood foundational natural/traditional architecture. I could (and did) walk into a forest with traditional hand tools and build a stone, earth and timber frame structure from scratch that I (and later my mother in her
retirement) live in.
That was over 40 years ago...and those are the skill sets and experiences you need to compete well in this current market to sincerely and honestly give your potential clients the service they need (deserve) within this venue. Even to this day, I do not facilitate much without a team of Artisan working "with me" (not for me) on projects. Even with the skills I had at 19, I recognized I needed much more to learn. I would suggest that you try to join a firm...over time several firms perhaps...then maybe you will be ready to try your had at your own business.
Could you start a business now?...I would say at a minimum you would have to do what I did at 19 at least ten times first...and...like I learned to...each in different styles and/or modalities...
That is not meant to discourage...but to excite you, and also to give you a sense of the realistic realities you are thinking about...