Due to the value drops in those areas over the past few years it has become a prime area for investment, and home ownership. The influx of short sales and foreclosures in those areas though have led to making them also prime areas for rentals since some of those home owners are now becoming renters.. Since the rental markets in the Tri Valley are averaging $2000/month on the low end and the average rent in Tracy/Mountain House is about $1500, it's a $500 savings to the renter. Now the location also falls into play as some of the newer 4+bd/2+bth homes can rival the lower end markets in Dublin/Livermore, and with the expansion of lanes on 580 people are still viewing Tracy/Mountain House as viable areas for living. The newer homes built in 2000+ will rent faster then the older community you find near downtown Tracy, but the single family homes to the west of 11th street also have a lot of appeal.