How about buying the hulls as you would with other gear and finish the craft off yourself ?
These small 12 footers are alot smaller and easier to work on then a F18 or something.
I live in a high rise building and I've been working on my 6 landyachts requlary using the parking lot in front of the building. You'll be surprised how easy it is. The only major undertaking are building the hulls, the rest is pretty simple and can be done everywhere.
I have restitched my F16 jib two times already in my living room (one time by hand even) and my living room is small. A F12 mainsail will not require that much more space or be more difficult.
It is not envisioned that homebuilding will produce most of the boats, it is just an important way of starting the class after which (hopefully) a small commercial builder can be interested when the concept has been proven.
Wouter
Wouter Hijink Formula 16 NED 243 (one-off; homebuild) The Netherlands