The Diamant LP was designed to comply with the German 1200NaN0 microlight category. The aircraft has a standard empty weight of 1180NaN0. It features a cable-braced hang glider-style high-wing, weight-shift controls, a single-seat open cockpit with a cockpit fairing, tricycle landing gear with wheel pants and a single engine in pusher configuration.
The aircraft fuselage is made from composites, with its double surface aluminum-framed wing covered in Dacron sailcloth. Its 9.71NaN1 span Bautek Pico L wing is supported by a single tube-type kingpost and uses an "A" frame weight-shift control bar. The wing has a two-point mounting system which allows the nose of the aircraft to be raised when flaring for landing. The pilot's seat is adjustable for both leg length and back angle. The landing gear features both disc brakes and fibreglass suspension. The powerplant is a twin cylinder, air-cooled, two-stroke, dual-ignition 500NaN0 Hirth F-23 engine.
The aircraft has an empty weight of 1180NaN0 and a gross weight of 2380NaN0, giving a useful load of 1200NaN0.