I also don't know if there were signs that there was already a problem from the tree roots when the neighbor purchased the property.

If they ran a camera first and observed a broken, bellied, or root filled section, then I would be digging, but not before.What were the specific issues with the three year old toilets?

I believe that OP has a broker that they are working under, but it doesn't appear that Bert can hold a license anymore.Something else, the root of the problem that I've seen appears to be with OP but Morris has certainly covered for them.

The area is pretty big and there will be lots of large roots from a huge pine tree in the middle of the yard, which is why I was hesitant.

If the system is under sized (to many bedrooms) the tank will need to get pumped more frequently.The other thing to consider are roots from trees and bushes they have a way of getting into (clogging) septic lines.I would try and find out when the last time the tank was pumped, and when they recommend pumping.

It’s exciting to just be getting started and I’ll be rooting for you to have tons of future success!

If the other sewage lines pass through your lot or your line passes through other lots, then the owner of the sewage line may not be able to control if large trees (that can have roots grow into the line) are planted nearby. 

Hi Ali, I think Orange County is a great spot to set down roots and acquire a highly appreciable asset down the road.

While Colorado may be turning red, many of the laws or lack there of on the books are due to it's blue roots.

So that's essentially the root of my question.