re: Selling stock to buy foreclosure

Probably more important than the the tax vs interest considerations, are you overweight these individual stock positions and what is their forward outlook. It may be time to trim those anyway. Also, you're going to eventually pay LTCG on them unless you anticipate holding until death, selling in a very low income year while in zero LTCG rate or donating shares. Unless the sale would trigger NIIT (additional 3.8% tax) or you plan to move to a state with lower tax on LTCG there may not be much advantage to putting of the LTCG bill.