Hello Angela. In CA, the foreclosure process starts with the recording of a notice of default and you can go to the county recorder's office and look up the property and see what's been recorded. You could also go to my website and search for foreclosures in your zipcode. While the search result will only give you street names (no street number), you'll be able to see if there's a foreclosure on your street. If you find a property on your street you can contact me and I'll look it up and give you the details
I believe the website for the Lancaster County Tax Collector is listed below. You can search by address, usually and determine the current status. Another way is to search the court records and see if a case has been filed against the owner/landlord; Check the pulic records for your county.
In Santa Clara County, you can search here: http://www.clerkrecordersearch.org/ However, it will not give you the property address - just a document number and name. You can also check Realty Trac, but I have found them to be highly unreliable.