How do I file a partition action? Understand the Concept of Partition.The first step to a partition action is to petition the court for a partition of the property. The following information is for general informational purposes only and should not be considered legal advice. Super Lawyers Rated Partition Attorneys in Walnut Creek. Ending Co-Ownership Disputes in Contra Costa County. Your development permit may require submittal of improvement plans, Parcel or Final Map, or just condition of approval compliance review. If you locate unlawful language, you may complete the Restrictive Covenant Modification form, and submit it to our office for review and recording. I am a land surveyor with a project in Contra Costa County. Where are the checklist for filing Maps, and what are the fees associated with map submittals?