This is a great analysis to determine if renting or buying makes sense moving forward in San Diego. The average rent for a 3 bed in San Diego County is $2,400 a month. As you can see, in just 3 years with less than 5% down and a purchase price under $450,000, buying real estate outweighs renting in just 3 years! Now, more than ever, one should consider buying. With rents in San Diego increasing on average 5-7% a year, it shows that with a fixed mortgage payment and the tax savings, the monthly payment shows without a doubt that Buying makes more sense than renting.