Rental prices are the bane of San Franciscos existence right now. Theyre higher than ever, and in fact, in many cases theyre about as high as a mortgage payment. We started investigating: down payment aside, what can you buy in San Francisco for the same monthly mortgage payment amount as you would pay in rent? This week, were looking at a $4,075/month payment, which is the current average rent for a two bedroom apartment. We found two 2-bedroom units in NoPa – one for rent, and one for sale. Which looks like the betterdeal: renting or buying? Lets find out.