How many investment properties is too many?

[Oh_hunnihunni]

We've got one rental property, it is our first house and we decided to rent it out when we bought a new house to live in.

It is run as a business, and any successful businesses goal is to be competitive.

Therefore we try to ensure the house is a nice house to live in, and is rented out at the lowest possible price.

Therefore we have had 100% occupancy with the same tenant the whole time who doesn't trash the house and pays the rent every fortnight. So everyone wins.

Unfortunately with these new interest on loan rules coming in we will have to raise the rent as otherwise we won't have enough money to buy food.

Dear friend of mine has been a tenant in the same property for 26 years. She has just been given notice to vacate because the LL is selling up.
Imagine the shock that must be.