Also in 1923, she joined the architectural team of Georgy Simonov. Simonov was a proponent of Soviet constructivism. He wanted his assistants, including Katsenelenbogen, to incorporate their ideas into the projects.

Katsenelenbogen specialized in the design of public buildings. At the same time, urban planning and development in the Soviet Union were based on her plans. Together with other architects and urban developers she participated in projects of housing estates in St. Petersburg. Firstly, the housing estate “Baburinsky” from 1927-1930 and the Bateninsky Residential Complex, which was started in the same year and finalized in 1934. Both are located on the main street Lesnoy Prospekt. Furthermore, in 1930 she completed the planning and development of projects for the center of the northwestern city of Murmansk, as well as development projects of several districts in Kaluga.
Nevertheless, the elaboration of individual buildings remained a part of Katzelenbogen’s tasks. In 1938, in collaboration with Trotsky Noy Abramovich, she elaborated the Kuibyshev Palace of Culture (Дворец культуры имени Куйбышева) in the southeastern Soviet city of Samara. Operas, ballets, and plays are performed there, and the grounds of the building are still used for event purposes.
One of her most famous works is the sanatorium “New Sochi”(Санаторий “Новые Сочи”). The building was opened in 1955 as a vacation home in the style of a palace. The name of the work reveals the location – the city of Sochi, which at that time developed into a resort in the Russian SSR.