Holden's early buildings were influenced by the Arts and Crafts movement, but for most of his career he championed an unadorned style based on simplified forms and massing that was free of what he considered to be unnecessary decorative detailing. He believed strongly that architectural designs should be dictated by the intended functions of buildings.^[4][5] After the First World War he increasingly simplified his style and his designs became pared-down and modernist, influenced by continental European architecture.^[6][7] This list includes all buildings for which Holden was commissioned to produce designs.

Holden worked on the designs for 69 cemeteries for the dead of the First World War as part of his work for the Imperial War Graves Commission (IWGC, now the Commonwealth War Graves Commission (CWGC)) between 1918 and 1928.^[1] Up until 1920, he worked as senior design architect and his designs are thought to include two of the initial cemetery designs built at Forceville and Louvencourt where Reginald Blomfield was named as the principal architect.^{[71][72][note 3]} In 1920, he became one of the four principal architects for the cemeteries on the Western Front.^[1]

Holden designed two memorials for the missing dead of the First World War as part of his work for the Imperial War Graves Commission between 1920 and 1928. Both are memorials to the missing from the New Zealand Expeditionary Force. They are located in Belgium and are within cemeteries also constructed to his design.