Hi Matt,
Welcome to SAT!
We have several RVs under construction or based at Bulverde Airpark (1T8), several at San Geronimo Airpark, and at least two more (in the same hangar) under construction at Kestrel (1T7). These fields are also the base for flying RVs to include my RV9a at Bulverde. Stop by some time--I am in hangar 36.
Additionally, you could come by Luby's Cafeteria (1604 and Blanco Rd) any Wed. at noon--an informal RV builders group has lunch there every Wed. We typically gather in the entry until noon, at which time the chow hounds push us into the serving line.
Again, welcome to SAT.