In a very tactical but calm manner, state your demand. One example sentence would be something like: “I would like the damage to the toilet fixed immediately before further action is taken on my part and I withhold your rent at the court house.” The request should be early on and you should be very direct. The point of a persuasive letter is to scare them slightly without threatening them.

Include any reasoning that you feel the letter needs to be written. If the demand is that someone should fix something, feel free to state the reasoning behind the fix and why you feel it’s necessary. Sometimes, a list of bullet points will help you write out the reasons as to why the recipient is getting the letter in the first place.

Make sure both you and the recipient are informed of the actions to take next if the letter falls through with no action. Things to include might be: A deadline, a number to contact and what will happen next if nothing is done.

Thank the recipient for a prompt and hasty response. Also, thank them in advance for taking care of the issue so the issue might in fact be taken care of quicker.