San Diego is America's finest city and an expensive place to live. Some areas are more so than others. Mostly the cheapest places to live are not places I'd recommend. I live in Poway about 17 miles outside of downtown Dago. Beags lives in Scripps Ranch. Both are nice areas. Poway has a better school system but Scripps is upscale and a lot more expensive both to buy and rent. Your son could find a three bedroom 2 bath house in Poway to rent for around $1,800 a month.There's also Rancho Penesquitos next to Poway which is in the Poway school district that is a similar bedroom community., along with Carmel Mountain Ranch which has some areas like Poway and some like Scripps. Some areas of Escondido, San Marcos, Vista have gang problems so I would not recommend any of those areas. Lemon Grove is southeast of the city and is not too bad an area, not as nice as Poway, but solid middle class; prices should be lower than Poway. Avoid any part of National City. Chula Vista is ok and getting better, Bonita is good. Inner city San Diego is improving, but I would not recommend it for someone unused to the area. The beach towns of course are fabulous with prices to match except for Oceanside which is at least a 50 minute commute in light traffic, easily a 90 minute one in heavy traffic. The freeway system is super and getting any where in the county is easy once you master the interconnecting highways. As I said, San Diego is America's finest city and there is so much to do and enjoy that I cannot begin to name it all. The beaches are mostly free and readily accessible. Weather is the best of any place in the entire USA even better than Hawaii . Temps along the coast.average high 70's daytime and mid 60's nighttime in the summer months and about 10 degrees cooler in the winter Further inland where Beags and I live it is about 10 degrees warmer on average in the summer and cooler in the winter. Right now it is about 80 degrees at my house and about 73 down on the waterfront. Rent, energy, insurances, utilities, gas for vehicles- - - you know, the basics, probabaly total around $3,500 a month for a family of 4 in a decent area. Food is in my opinion cheaper than most places because so much of the nation's food needs are grown about 200 miles north of here in the San Juaqin Valley Hope this helps a bit