A development of the early Richard 125 Commuter flown in 1969, the 150 Commuter is a braced high-wing monoplane with all-metal construction of the wings, monocoque fuselage and tail unit. It has a non-retractable conventional landing gear with a tailwheel. The prototype was powered by a 1500NaN0 Lycoming O-320-A2A air-cooled engine with a two-bladed metal tractor propeller. The enclosed cabin has two side-by-side seats with dual controls and a baggage space behind the seats. After the prototype first flew in 1972, a new wing was designed with different wing section and an area of 1002NaN2.