Unfortunately rents in San Diego do not fall below $1,000. He could rent a room in a home and pay around $500-600 but would have to share a kitchen. You should know however, that as a veteran he could get a VA loan with 100% financing, meaning $0 down payment, and get 3% in closing cost assistance from my lender. This means he could buy a home and pay about the same as rent with little out of pocket cost. Please contact me at email@example.com to discuss further if you are interested. Hope this helps.
LBG Real Estate