With a low cantilever wing, fixed landing gear, and two open cockpits,[1] the aircraft was developed by Hanns Klemm, who used his previous design, the Daimler L20, as a starting point.

[1] About 30 different versions of the Kl 25 were made, and these were equipped with engines ranging from 32 to 70 kW (43 to 94 hp).

Depending on the model, the aircraft's weight was 620 to 720 kg (1,367 to 1,587 lb), and it had a 10.5 to 13 m (34 to 43 ft) wingspan.

About 600 were built in Germany between 1929 and 1936,[1] serving with various flight training organizations, with either wheels, skis, or floats.

[1] 15 were sold to Britain before the Second World War,[1] being fitted with a variety of domestic engines,[1] while 28 more were built by British Klemm Aeroplane Company as the B.A.