EXPLANATION: A standard house lease contains many aspects of leasing and how it should be kept. It also contains the tenure of stay and the responsibilities of both the parties engaged in signing the agreement. Few landlords may have a problem with pet entering their home which is why they clearly mention it while the agreement is being prepared. If it's not mentioned, one can assume that the landlord doesn't have any problem with pets. A mandatory that a lease will contain is monthly cost of rent, how much should be paid by the renter. Another point added in a lease is the what repairs should be a renter's responsibility. But, purchasing a homeowner's insurance is an optional decision for the homeowner. No one can force anyone to buy an insurance and so it is not mentioned in any lease agreement.