I was in Long Beach, CA recently passing through, and I remembered they filmed a bunch of Dexter locations there, so after a quick Google search, I found several that I wanted to check out. Some of them looked just like they appeared on the TV show, but Rita's house had changed quite a bit.
Dexter’s childhood home (the Morgan house) - 2431 Chatwin Ave, Long Beach, CA
Dexter & Rita’s new house - 3319 E 1st St, Long Beach, CA
Dexter’s inherited house from his “father” - 5570 E Rolanda St, Long Beach, CA
Rita’s old house - 2348 San Anseline Ave, Long Beach, CA
Trinity (Arthur Miller)’s house - 4119 Locus Ave, Long Beach, CA