Check with appraisers in Mohave County, AZ--Lake Havasu City, Bullhead City and Kingman. I did most of the residential appraisals in Needles and Havasu Lake, CA for two years about eleven years ago. Several of the Arizona appraisers in that area are licensed in AZ, CA and NV so they can cover that area which includes Laughlin, NV. Needles, CA, Ft Mohave and Bullhead City AZ, and Laughlin are all across the river from each other. When I worked there I had a very detailed data base that I maintained. One time I was working on an appraisal in Havasu Lake, which is 99 year leases on Indian Reservation land, so nothing of public record--you had to get the information from the blue eyed indian lady in the tribal office. Was walking up to the front door to go inside a property and realized some one was taking photos from the shore and street. When he saw me unlocking the door he came running up there--turned out it was an appraiser from 200 miles away doing a driveby. Asked him if he had been to the tribal office yet, he hadn't and wasn't going to take the time since he had to drive over 400 miles round trip. Always wondered how he completed his report without any sales data. Fifty miles from Needles and one hundred miles from anything else.