How is the septic inspection basically Free? 

Nobody wants to be surprised after the purchase of a home by having the previous owner’s sewage backing up into your new home!  It is highly suggested that home buyers pump the septic tank when taking ownership of a home.  This is normal maintenance for homes on a septic system.   There is a good chance that you will perform this same service after you take ownership of the home.  The information in regards to the condition of the system will not be useful in negotiating after this transaction has taken place.  The inspection includes the system being pumped and is basically the same price as the pump itself.  We consider this evaluation almost free because it is something that you will likely perform in the near future anyway.  We have no desire to upsell you on what services should be performed, but we do desire to educate you so that you will be in the best position to make the best decision before you make the investment in your next home.  Most people would rather have the information on a potential defective system before we purchase our new home?  Most home buyers desire this information in hopes of negotiating these expenses and not having to bear the burden of this cost alone.

When it may not make sense to do this inspection?

It is possible that the current home owners maintained and pumped the system as well as had it evaluated before listing their home.  You may want to inquire if they had performed this service and if you could reach out to the company who performed the service to further discuss the condition of the system.
You may have other major concerns about the home that you first want to be informed on before you add an additional expense such as pumping the septic tank.   That would be a reasonable and prudent position and we could schedule the septic inspection after clearance of these items if the inspection period on the contract allows for that extra time frame.

This is not an inspection that we perform, but one that we can sub-contract with a local septic company.  We would be happy to coordinate their services to also be performed for you at the same time as our inspection.  Call our office for pricing and further questions.