Dear [Agent's Name],

Thank you for informing me of the possibility of a rent increase with the upcoming end of my rental lease. I understand that landlords have the right to increase rent, but I was quite surprised to hear that my rent will be increased by 20%. As a valued tenant, I would like to express my concern and respectfully ask for a reconsideration of the proposed rent increase.

I have always paid my rent on time and taken good care of the property during my tenancy. I hope we can come to a mutually beneficial agreement that will meet both parties' needs. If possible, could you provide me with an explanation of why the rent is being increased by this amount, as well as any comparable rents for similar properties in the area?

Thank you in advance for your time and consideration, and I look forward to hearing back from you soon.

Sincerely, 
[Your Name]
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