Best of luck, we're all rooting for you

I had several root intrusions, and some spots where the pipe wasn't round but an oval. 

Does your family have roots in the neighborhood or in the local school?

At that time we found the sink cabinet was water damaged and replaced it (still not 100% sure if Tenant, we took the hit on it), sewer line backed up due to roots and had costs associated with jetting & roto-rooting sewer and hot water heater replaced.  

with  the duplex it could be annoying and a diamond in the ruff to find.there are some houses we would consider living in and letting our family plant some roots... 

Here in Chicago, demographics are extremely segregated and violence along with it, enough so that I'm surprised the federal gov't hasn't made more of an issue of the segregation (but that's a soap box for me to stand on in a different thread).

Society lets money be the root of all evil.

I'm hoping you stick around, grow some roots and give as much as you receive.

NYC is my hometown and someplace where I'd like to start spreading my roots. 

I will be responsible for the drain outside if it is tree roots.