Chasing Down Unpaid Invoices for Custom Built-Ins

Had a client ghost me after I finished a set of Festool Domino-joined cabinets for their kitchen remodel, total bill came to $4500. Sent three reminders through Jobber but nothing, now I'm looking at small claims or a lien on the remodel permit. Anyone got tips for collecting on these high-end woodwork jobs without burning bridges? FML, this is eating into my tool budget.

Screw the bridge, file that mechanics lien ASAP on the built-ins - it's your best leverage and most clients pay up once they see the paperwork. I've collected every time with Festool-level work like that, no exceptions.