Property with a Realtor, How can I find the seller?

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Hey BP!

So there is this home in my neighborhood. It is in a very great location here in Richmond Texas. I always knew for awhile no one lived there due to the condition of the fence and the backyard is trashed. Unfortunately now a realtor is dealing with the property and it has been listed for a little over a month now. I do not think she will be able to sell it. I plan on wholesaling this property. I know the only way I can invest in this property is by having the owner remove the realtor. I want to go into the house to see what kind of condition it is in, however I do not know how I can do this if I cant find a way to get in contact with the owner. 

Any ideas how I should approach this property?