What CIR and CIN are — and why they're not the same
The CIR (Regional Identification Code) is the code that the Lombardy Region assigns to non-hotel accommodation facilities and short-term tourist rentals. It has existed for years as a regional census and anti-illegal-tourism tool.
The CIN (National Identification Code) is a code introduced at national level by art. 13-ter of Decree-Law 145/2023 (the so-called Anticipi decree), converted into Law 191/2023, and fully mandatory since 1 January 2025: it uniquely identifies every single tourist accommodation unit on Italian territory. It is issued by the Ministry of Tourism through the National Accommodation Database (BDSR).
Since 1 January 2025, both codes are mandatory for short-term tourist rentals in Lombardy: the CIR remains the regional reference, the CIN is added as the national one. Anyone publishing a listing on Airbnb, Booking, Expedia or any other portal must display the CIN in the title or description of the listing.
How to obtain the CIR in Lombardy
The CIR is requested online through the Lombardy Region's ROSS1000 portal (formerly Turismo5). The procedure requires authentication via SPID or CIE, entry of the property data (cadastral, address, accommodation type) and submission of the SCIA to the SUAP of the relevant Municipality. Issuance typically takes around 30 working days from the filing of the municipal SCIA.
If the property is managed by a third party, the owner can delegate the property manager to apply via a simple power of attorney; the manager operates on the portal with their own credentials but in the name and on behalf of the property owner.
How to obtain the CIN
The CIN is requested through the National Database of the Ministry of Tourism (BDSR), accessible with SPID or CIE. For Lombardy the process is streamlined: those who already have a CIR can obtain the CIN as a follow-on, in a single procedure that imports the data already registered at regional level.
The CIN must be displayed visibly on every online listing of the property and, for physical buildings, posted on the outside of the building as required by applicable fire-safety regulations.
Penalties: the real cost of not having them
Missing or incorrect display of the CIR on listings is sanctioned by the Lombardy Region with fines from EUR 500 to EUR 2,500 per non-compliant advertised activity (Regional Law 7/2018 amending Regional Law 27/2015). Repeated breaches double the fine; the Municipality may also suspend the activity for up to three months or order its closure.
On the national side, art. 13-ter of Decree-Law 145/2023 splits sanctions into two bands: failure to apply for the CIN is fined EUR 800 to EUR 8,000 per property, while failure to display the code on the listing carries fines of EUR 500 to EUR 5,000 per listing. On top of that, portals are required to remove non-compliant listings, so a non-compliant property effectively exits the market until it's brought back into line.
What we do on CIR and CIN
For the properties we manage, we handle end-to-end the application and maintenance of both codes: document collection, application filing, display on the primary channels (Airbnb, Booking, Expedia) and on long-stay secondary channels, monitoring of regulatory deadlines and updates to the codes in case of cadastral or management changes.
The owner receives a copy of the codes by email upon issuance, along with full documentation archived in the dashboard.