I googled “Mapleton Murrieta” and found this article from March 31, 2005:
Parents picket against sex offender
Angry residents hold signs Wednesday morning protesting convicted sex offender Edison Mercado who lives in their Mapleton neighborhood in Murrieta.
…
A homeowner living on Mercado’s street said that she recently put her home up for sale.
“Now, I’m stuck, because nobody’s going to want to buy my home,” said the woman, who declined to give her name. The woman’s real estate agent said she shares the concern.
“No one is going to want to live up the street from a sex offender,” said Alma Rodriguez, a real estate agent with Century 21 Tri-Valley in Murrieta. “Homes are going to be going down in value until he moves out of here.”
Rodriguez said that sex offenders can be anywhere. So rather than drawing a lot of negative attention to the neighborhood by picketing and putting up signs, “parents should just start taking care of their kids; then they wouldn’t have to worry about who is living next door.”