Potential House Hack Property Owner Has Counter Offered.

[Jason Toledo]

Hi All, 

I'm looking at a duplex in the Dallas Fort Worth Metroplex area; the seller has just counter offered with an addendum for reservation of the potential oil, gas and mineral reserves of the property. I offered 10K over the asking price, due the numbers still working. Is this a deal breaker in regards to real estate investing; as investors, wouldn't we want control the whole of the properties we are purchasing? Thanks in advance for the help!

Best Regards - 

Jason Toledo