[2] A resident in Vallecas, she became a civil servant of the Madrid City Council in 1986, and she worked in the Municipal Sports Institute until 1996.

[6] She left her seat in September 1999,[7] as she had successfully ran as candidate in the 1999 municipal election in Madrid and had become city councillor.

Sabanés became city councillor for another spell and, as member of the municipal government board presided by Manuela Carmena, she has served as councillor of Environment and Mobility of the corporation during the 2015–2019 term, in which she promoted Madrid Central, a plan for a new range of inner-city traffic restrictions[13][14] as well as the "re-naturalization" of the Manzanares river, opening the locks impounding the stream along its watercourse.

The municipal government of PP and Citizens made the most of the gap until her successor (Mar Barberán) took office, passing the annual budget in a controversial action that spearheaded the absence en bloc of the opposition councillors during the vote as sign of protest.

[18] Equo members elected Sabanés as Federal Co-Spokesperson of the party along Florent Marcellesi in February 2020.