I own properties in Pattaya and Bangkok. I live in one or the other when need be. I'm on a Non Immigration O visa registered at my Pattaya property. Many times I aren't there, which comes to my question. Do the Immigration Police in Pattaya do random check ups for people registered there but living elsewhere in Thailand. Cheers.

Immigration does not do random checks to confirm a person is staying at the address used when applying for extensions.