Subject to the terms of this retainer agreement, in the event any bill from this firm remains unpaid beyond a 30-day period or, if in the judgment of this firm. This client Retainer Agreement is for ongoing service agreements between a client and consultant or contractor.The document is a partition agreement between two parties to terminate their community ownership of a parcel of land and divide it between them. Quoting retainer fees involves providing legal advice, determining complex and variable factors, and addressing professional liability concerns.