Designed by Charles H. Day, the D-25 was developed from his four-passenger D-24 which was equipped with a 180 hp (134 kW) Hispano-Suiza E eight-cylinder radial engine and built in Paterson, New Jersey.

This was underpowered, and production switched to a 220 hp (164 kW) Wright J-5 engine, the new model being renamed the D-25.

[1] Some of the existing D-24s were converted to D-25 specification, including one by its owner, famous barnstormer Johnny Miller.

The rugged structure gave the New Standard Ds a long-life, leading to the respectable number that survived the abuse of joy-riding, mail carrying and crop dusting for many years.

New Standard ceased trading in 1930 but production restarted with around nine being built from 1933 through 1937, most of these being used for crop dusting.