Unlawful Detainer
UD-100: Complaint — Unlawful Detainer
Current as of July 21, 2026 · tracked for revisionsFillable PDFJudicial Council of California
The UD-100 form is used by a landlord to start a court case to evict a tenant from a rental property. A landlord would need this form when a tenant stops paying rent, violates the lease agreement, or refuses to leave after their tenancy ends.
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Forms that go with UD-100
POS-010RequiredProof of Service of SummonsThis Proof of Service of Summons is required to document and confirm that the UD-100 complaint and summons were properly served on the defendant.›SUM-130RequiredSummons (Unlawful Detainer)This Unlawful Detainer Summons must be issued and served along with the UD-100 complaint to formally notify the defendant of the lawsuit.›UD-101AttachmentAttachment — Unlawful DetainerThis Prejudgment Claim of Right to Possession is attached to the UD-100 when unknown occupants may be present at the property, ensuring all occupants are properly notified.›UD-110Often filed with itJudgment — Unlawful DetainerThis Request/Counter-Request to Set Case for Trial is commonly filed after the complaint and answer stages to schedule the unlawful detainer hearing.›UD-105Next stepAnswer — Unlawful DetainerThe defendant uses this form to file their official response (Answer) to the unlawful detainer complaint, making it the direct next step after the UD-100 is served.›
More Unlawful Detainer forms
UD-104Declaration (Unlawful Detainer)›UD-106Form Interrogatories—Unlawful Detainer›UD-115Request for Entry of Default (Unlawful Detainer)›UD-116Declaration for Default Judgment by Court (Unlawful Detainer—Civ. Proc., § 585(d))›UD-120Verification by Landlord Regarding Rental Assistance—Unlawful Detainer›UD-125Request to Dismiss Unlawful Detainer Case›