A lender will probably offer you a home loan based on your income and score alone. They probably won't touch him. That means that you will be able to purchase a home that you could easily afford by yourself. He will not be on the property deed or anything else. That being said, for now, I would settle for the lower priced home. Add him as AU as suggestd aboove, give it 5 yrs to build equity andthen reapply jointly ifyou're readyto move on to bigger and better things. If your one income can't support the house you'd like. Still add him and take active steps to improve his score. Once he hits 620 or above, thecombined scores and income may make you an A+ candidate.