You said you received a TRO from a 3rd atty. How was it delivered? In-person or mailed? Restraining orders are issued by the court. Can you please verify what you received was a court document.
If it was indeed a court issued RO, please heed the language on the document. Likely, any further personal interaction with neighbor will land you in an expensive legal defense.
That said, the TRO has no effect on your plumbing case if you choose to proceed. It is merely meant to intimidate you.
I’m not sure if you can get a property lien in a small claims decision.
You need an atty to help you present your case to include attaching a judgement to the title. I think a non-functioning sewer would qualify as a health and safety issue. Your atty may suggest to involve code enforcement for this reason.
Property liens are easily discovered in a Title Search (by title insurance company)when a new buyer starts escrow.
A judgement against the individual will not alert any potential buyers and will be very difficult to collect once he moves away.
