Applies to: Regional or local registration; there is no single Spain-wide checklist.
Before you start
- Identity documents for both partners.
- Evidence of civil status and any prior relationship ending.
- Required cohabitation/address evidence.
- Foreign-document authentication and translations where applicable.
The steps
Find the competent register
Use the autonomous community or municipality covering your address. Check eligibility and whether a local registration has the effect you need.
Read the cohabitation rule
Requirements vary. Madrid’s current published process requires twelve months of joint registration immediately before applying and residence in the community; do not apply that rule everywhere.
Order the right civil-status documents
Ask the register which certificates it accepts for your nationalities and how recent they must be before paying for translations.
Complete the registration process
Follow the appointment, personal-attendance, witness or notarial requirements published by that register. Save the issued certificate.
Assess any residence application separately
A registered partnership may be relevant to a family route. An unregistered durable relationship can be assessed under its own evidential rules; neither automatically gives immigration status.
Important details
Pareja estable
This term can refer to particular regional civil-law arrangements. Do not assume a notarial document has the same effect in every region or every immigration procedure.
Practical protection
Discuss property, inheritance and separation consequences with a qualified adviser where they matter. A certificate is not a substitute for understanding those consequences.
See the bigger picture
Pair these practical steps with the Spain-wide essentials.
Sources & next steps
Reviewed 30 September 2026. This independent guide provides general information. Requirements, fees and office arrangements can change; the responsible authority’s current instructions control your application. Commercial service links explain products, not official rules.