What Is The Usual Percentage Increase For Rentals?

[ghost]

If you pay in dollars and are being hit yearly for increases you need to move. Actually if you pay in dollars you should be entitled to a yearly decrease.

 

[ben]

20-25% annually is standard. Any less than that can and should be considered a good deal.
(In pesos of course - in dollar terms, a 20% peso increase is a decrease, as ghost noted).