Oceanside airport KOKB is about 30 min South of Irvine but if I recall Pete McCoy mentioned finding it to be something like $500/mo for a real wreck of a hangar. It's a convenient location to the 5 freeway but not much of an airport.
EAA Tech Counselor
RV-9A #92103 - N803DK
G3X, Superior XO-320, Dual Pmags, Catto 3B
1974 Bellanca Super Viking - N16AW - Flying
RV-8 #83565 - N184DK - building
1968 Mooney M20C - N6801N - Sold
1956 C-182 - N744W - Sold