Registering for the use of the Historic Civic Archive and Trivulziana Library is free of charge. The institute allows for consultation of its material in two reading rooms: Girolamo Mopurgo (for books and documents) and Ornato Fabbriche (for records of buildings and streets, street appearance, planning regulations and the museum archives). 

Personnel can provide users with information on the collection both remotely and on site as well as assist in the use of the inventory, the descriptive catalogues and the cataloguing tools. The office can make photocopies and professional reproductions for a fee.