How about insurance, electricity, labor, property taxes and maintenance ... they are not going up in your area?
Electricity - not paid by landlord.
Labor - not sure what you mean.
Maintenance - fixed rates for home warranty for big things, minor costs for maintenance otherwise which are factored into rent monthly regardless of whether they are used. So that could account for single-digit percent rise in rates.
Anything else?
The rest are a small fraction of the total cost of ownership (vs financing the initial purchase).
Rents appear to be going up faster than the total cost of ownership (the financing costs are fixed, or nearly so).