Comment by embedding-shape

We have something similar in Spain, except instead of "comparable rentals in the area" there is a index (called IRAV (Índice de Referencia de los Alquileres)) maintained by the government each year, which limits how much rents can be increased. My landlord just reference that each year, it's easy for me to check if it's right, then that's it. For the areas where supply is limited ("áreas tensionadas"), as some areas like Barcelona is geographically limited to expansion, there is a total limit as well, independent of the IRAV.

Of course, if there are improvements in the rental, you can go beyond the index as the property been "improved", but it's really handy to know each year that it's limited and the exact amount. For 2026 it's locked to 2.14% for example, for everyone.