Hi Scott, I am in the Real Estate industry for the last 12 years as a developer, broker, investor and now with a Real Estate SaaS company.
I would love to have such a database of owners, but do not believe one exists.
From my experience the only way to get the data you want is through Title Search Registry, and that will cost money on a case by case basis. Know that there are between 5 and 10 million title transfers per year in the USA depending on what properties you include in your search so you would need to keep track of about +14,000 changes in ownership daily depending on what model you are after. That is about 10 changes per minute to keep track of. And each state and county may have a different title search system, so to do this across the USA will be a huge network and I do not believe any such system exists online. Generally names and contacts of owners is not public information. On a case by case basis if you know the address of a property you can search and scrap the web to try and find any link to the owners... through any public record like a listing in the phone book, but then again that is not 100% accurate and would assume ownership, but could be by a tenant and not an owner. you can check http://www.propertyshark.com/mason/ i tried it on a few properties that I know the owners of, it came up with no results. Try... usrealtyrecords.com I tried that too, very slow search and came back with nil in the way of owner info and they wanted $1.25 for the report that they did scrap from public records about the property. If you can solve this problem you will be very wealthy indeed. I know the guy who did it for Canada, the key there was to get the banks onboard for security registry on mortgages, in Canada there are only 7 major banks with about 90% of the business, and one bank Royal Bank with 50% of the business.... in USA there is about 12,500 different banks, so very fragmented for such a system. You would need a central property registry somewhere in the USA to do this. I would start on the state level. Please let me know if you find anything out there. All the best. J.