By using the equity you have in your home as security for your investment property loan, you’re effectively tying the two properties together.  If you do want to sell your home, you’ll have to refinance your investment property loan at the same time you discharge the mortgage on your home loan.  Make sure you have an alternative source of security for your investment property home loan before you put your home on the market.  Alternatively, wait until you have sufficient equity in your investment property so that no further security is needed to guarantee your investment property loan.