Fifty-something years ago my dad built a garage / tractor shed, with a 6" thick concrete slab (mixed the concrete by hand) and what I think is called post and beam construction using creosote 4x4s for the posts, and corrugated galvanized sheet metal for the roof and sides. Some of the sides were replaced with wood siding and insulated when he finished a work room in there, but most of it is still "tin". The tin is about rusted out, especially the roof which is starting to leak. Also the neighborhood has gotten way more residential. My brother wants to replace the building with something that actually looks like a garage. A slab like that would cost a fortune to replace, and AFAIK creosote poles like that are no longer made and these are still in great shape. So basically the roof needs to be replaced; probably with a residential metal roof, and the sides need to be redone with something like Hardie Plank, and garage doors put on the front where it just has open bays now. If they do nothing the building is just gonna fall apart in a few years.
I have no idea how you find a contractor that knows how to do post and beam construction, much less do that kind of work (a pole barn, basically) and have it look nice. For example, there are very few studs in the walls, just what would be called purlins if they were on the roof. (and the roof does have purlins instead of decking) The walls might need to be framed to do it right, but the posts should be the structural members and none of the walls need to be load-bearing.
This is still out in the country where you don't need a permit. My mom has a handyman that probably could figure it out (he repaired a rotten top plate last year and did a good job) but redoing the whole building too big a job for one person (even tho' one person built it 50 years ago)
So how do you find someone to work on a project like that? (this is in Montgomery County, Texas, BTW, not far from Conroe)