In his last years, Štraus suffered injustice due to a process he undertook against the current owners of the Unis towers in Sarajevo (now Unitic).
[8] His major projects include:[2][3] Some of Štraus' works were destroyed during the Bosnian war, such as the Olympic Press Centre in Bjelasnica built in 1983.
Other works of him include Hotel Osmine in Slano near Dubrovnik (1972), Army Home in Derventa (1977), Hotel Onogošt in Nikšić (1982), Catholic Church in Zovik near Brčko (1996), Chapel in St. Ante's Monastery in Sarajevo (1996), redesign of the Facade of Ministry Building of Bosnia and Herzegovina with T. Neidhardt (2006), Catholic Church Dobrinja in Sarajevo (2010).
In 1984 the Academician Husref Redžić from Sarajevo wrote about Štraus, for the proposal for candidacy for his election to the Academy of Sciences of BiH : "Ivan Strauss is a complete architectural and artistic personality, he is primarily a man of ideas and a creator of space, but he is an architect-builder and architect-publicist.
The objects that Ivan Štraus designed recently, in the years of mature architectural activities, represent a small anthology of specific forms - pure in their geometry, powerful in their proportions, playful but disciplined in their rhythmic compositions and very often bold in constructive solutions.
[9] About Štraus' Sacral Architecture, architect Mihajlo Mitrović writes: "This whole cycle of unreleased and original artistic circles has a perfectly recognizable common denominator: complete beaconnamentality, masterly shaped lapidity of the form, and the sovereign presence of primary structures, which form the basis of the most unusual corners, dosed sacral mysteries.
The bells are a special storie, a pure Euclidean planimetry, and the interpretation of the cross, a lucid challenge to the oldest and simplest symbol of Christ.