A landlord can increase the rent when resigning a lease with a tenant or if the original lease has a clause that allows him to do so. If you and your tenant have a month-to-month lease agreement, you can also raise the rent at anytime with proper notification. Should you plan on raising the rent amount, you must notify the tenant in writing with the new amount and when it goes into effect.
Write "Rent Increase Notice" at the top so it is clear to your tenant what the notice is about. On the following lines write the date, your tenant's name and the address of the rental unit. This will identify who will be affected by the increase and which property is involved.
Inform your tenant of the increase amount in the first paragraph. In the first sentence, state how much the increase will be, followed by the total amount of rent. For example, "Rent for the above listed unit will increase by $XX for a total monthly rent of $XXX." You will need to include the date that the increase goes into effect in the following sentence. Depending upon your local landlord-tenant laws, you will need to give anywhere from 30 to 60 days notice of the increase.
Give a reason for the increase in the next paragraph to give the tenant a better understanding of why you are raising the rent. Examples of reasons for rent increases include escalated costs of maintaining property, higher property taxes, required improvements, inflation and increased cost of living.
Leave a way for your tenant to contact you. Your tenant will most likely have questions or want to discuss the notice to increase the rent. Leave a phone number in the final paragraph where you can be reached. Do not forget to sign and print your name at the bottom of the notice.
Take the notice of the rent increase to your tenant and personally hand it to him. If you cannot personally deliver the notice, you can mail it with proof of mailing and delivery receipt to ensure that the tenant has received the letter. You will also be able to prove he received it within the required notification time before the increase takes effect.