According to SanDiegoPet.com, Carlsbad does not allow dogs at ANY parks. I don’t know why…seems a bit harsh to me.
However, I bet you can find some great trails around C-Bad and don’t forget Dog Beach in Del Mar, which is arguably the most fun for dogs and owners. There must be some parks around CBad that “look the other way.”
Might want to just stay in S.Ranch and commute for a while and let homes get cheaper…