The Minister of Presidency, Justice, and Local Administration, Miguel Ángel García Martín, revealed these details during a visit to the complex's construction site. He emphasized the project's magnitude, describing it as one of the largest public building endeavors in Spanish history, and highlighted the regional government's conviction that investing in justice is crucial for safeguarding citizens' freedom and rights.

The new courtrooms will be adapted to various jurisdictions, with 45 reserved for future needs. In the criminal sphere, differentiated routes will be implemented for detainees to access courtrooms directly without encountering victims or witnesses. The facilities of the Provincial Court will include specific waiting and deliberation areas for juries.

Regarding major cases, two courtrooms will be located in the Provincial Court, and the other two in the Commercial and Criminal sections of the Court of First Instance. These spaces will have a minimum capacity for 150 people, with a presiding table for up to six seats and nine additional seats on each side for lawyers and prosecutors.

The complex will also feature four assembly halls. The largest, spanning nearly 300 square meters with a capacity for 235 people, will be situated in the building of the High Court of Justice of Madrid (TSJM). Another hall will accommodate 108 attendees in the administrative services area, while the remaining two, located in the Court of First Instance and the Prosecutor's Office, will add 300 seats.

Currently, construction is in the earthmoving and pile-driving phase for the foundation, with an estimated 1.8 million tons of earth to be removed. Lot 1, which began in October 2025 and will house the TSJM and the Provincial Court, is expected to have its exterior structure completed in the first quarter of 2027 and conclude by the summer of that year. Lot 2, which will host the Court of First Instance and the Prosecutor's Office, recently commenced and is scheduled for completion by the summer of 2029.

The Community of Madrid will invest 653 million euros in this project, which will unify 26 judicial venues currently scattered across the city and is projected to save 80 million euros annually in rent and services. The future City of Justice, with over 470,000 square meters of built area—a 61% increase over current space—will include reserve areas for future judicial growth and 20,000 square meters of green spaces. The main access, the Plaza de la Justicia, will be similar in size to the Puerta del Sol and connect to a large avenue within the complex.