Here is the Google Earth photo of 10211 E. Connor Rd., Valleyford, WA. This is the address Caitlin Ross listed on her campaign filing. Maybe that wheatfield where she is standing in that picture is where she actually lives.
April has done a bit of research. 10211 E. Connor Road appears to be part of Spokane County parcel 44325.9036 with an address of 12929 S. Dunn, the owner of the parcel is listed as JR H. Koch. There is a registered voter at the Dunn address by the name of Marjorie Koch, born 1922. Remember, a David Koch, Ross's campaign advisor, is registered to vote at the 10211 E. Connor Rd. address. Google Earth shows a house at 12929 S. Dunn, but no house at 10211 E. Connor Rd. The two addresses are diagonally across from each other on the same 200+ parcel.
This is nothing conclusive. The photos could be old, or the mapping coordinates could be off. Someone is going to check the actual physical mailing address and report back.
UPDATE FROM APRIL: The Spokane County Assessors office has an online searchable database. The mapping is slightly off so I missed the house the first check. There is a house at that address, it is with the parcel next door. It must be kinda cozy though, two bedrooms and one bath split between three unrelated individuals.