The information was given to councillors at a meeting on Thursday morning at the city hall, at a presentation of a report on urban tourism in Lisbon.
The restrictions will cover the parishes of Santa Maria Maior, Estrela and Misericórdia.
The municipality estimates that the regulation to restrict the rental of private apartments and homes to tourists will be published in November.
The diploma that allows city councils and owners assemblies to intervene in the authorisation of local accommodation comes into force on 22 October.