Filing a complaint for partition of real property is the best way to show your uncooperative coowner that you are serious about selling the property. This article will guide you through the process of creating a comprehensive retainer agreement and explain the critical clauses in detail.We have provided free online forms for partition actions that should only be used in conjunction with a partition attorney in California. 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.