You can only make a claim for the house you are living in, your principal residence, the second property will be assessed as means, also if the mortgage on your house was for any other purpose other than for purchasing it then that portion would not be included for supplement. For example if you remortgaged your house to put money into the buisness, buy a car, use as deposit on the second home etc etc none of that would be taken into account and you could only be assessed for the portion of the mortgage that was used to purchase or repair your principal private residence.