[2][6] The architect of the line of Van's aircraft, Richard VanGrunsven, designed the RV-12 with several specific goals in mind.

[5][8] The prototype incorporated several new features for an RV-series aircraft including: removable wings, full-span flaperons and an all-moving stabilator.

It is intended that the RV-12 will be powered by a Rotax 912ULS engine of 100 hp and equipped with a Sensenich composite ground-adjustable propeller, although as a kit aircraft the builder can complete it as they choose.

The RV-12 is sold as six sub-kits: wings, fuselage, empennage & tailcone, finishing (cowling, wiring, canopy, etc.

It also incorporates a new cowling and throttle quadrant design, quick-retracting flaps, a quick-adjusting seat, redesigned landing gear attachments and fuel tank, among other improvements.

[16][17] In October 2012, Van's announced that the company would produce a limited run of twelve fully assembled RV-12s, sold as Special Light-sport Aircraft (SLSAs).

[5][18][19] In November 2013, the company announced that a follow-up batch of twelve RV-12s, again to be assembled by Synergy Air, would be sold fully equipped for US$123,000 or US$115,000 for the base model.