Answer:
Firstly, write your address and date on the top most right side of your page.
Then you write the address of your landlord under at the left side of the page.
Write something like dear sir on ma directly on the address of your landlord
Since it a formal letter, give a title something like "reason for house rent delay" in capital letter.
After writing the letter give a paragraph and give reasons why the house rent has not been paid and conclude the letter.
At the bottom right side of the page write Yours faithfully, sign under that and write your full name under the signature
