All realtors can access any house that's listed in our MLS (multiple listing service).
If you are interested in seeing the inside you can contact an agent.
CORE Construction and Real Estate
See if you can find a CRS (Certified Residential Specialist). Only 3% of Realtors actually obtain this designation and in most cases they're really familiar with investment properties.
Go to www.CRS.com and look for a CRS in that area. You can see what classes and specialty training they have. See in they have the investment class. Most there Realtors practice by doing so they usually hold a few investment holding themselves.