In 1917, she was one of the five architects who participated in the construction of 16 houses with thatched roofs in the park district of Bergen based mainly on the use of tiles and terracotta elements.

The successful part she had played in the project was noticed by H. T. Wijdeveld who commented on the fine work a woman had, for the first time, executed in the field of architecture.

[1] In subsequent years, Kropholler undertook further projects in the style of the Amsterdam School, receiving international recognition in 1925 when she was awarded a silver medal for her architectural work in the Dutch exhibit at the Paris Decorative Arts Exposition.

Staal appreciated her involvement, deeming her work artistically and technically excellent, especially the interiors she designed for the Beurs-World Trade Center in Rotterdam, completed in 1940.

[1] In the post-war years, Kropholler submitted a number of proposals for housing reconstruction which were turned down as a result of new criteria defining maximum volumes and floor space.