It comprises 27 legislators, 16 of whom are elected in a single province-wide multi-member district through proportional representation, while the remaining 11 seats are distributed through the majority bonus system.

[3][4] The Legislature has its seat on Mitre 550, in the provincial capital of Rawson.

[2] Since 2019, the building has endured repeated damage during protests against the provincial government of Mariano Arcioni.

Damage has included a major fire that affected the facade in 2019, and rendered most of the building unusable due to a high concentration of toxic soot.

[5] In 2021, following protests against Governor Arcioni's proposed pro-mining law, the building once again had to undergo renovations.