Is your principal place of business in Alameda County? A partition deed is a legal document used to divide property among co-owners.Most Court documents are provided as PDF files. To view or print these files you need the free Adobe Acrobat Reader or other PDF reader. Super Lawyers Rated Partition Attorneys in Alameda County. Ending Co-Ownership Disputes in Alameda County. The document is a partition agreement between two parties to terminate their community ownership of a parcel of land and divide it between them. {SINGLE-PRIME CONTRACT). Another parcel of real property in the City of Hayward, County of Alameda,. The parties involved must record the contract after drawing it up, approving it, and signing it.