Lawyer for Common-Law Separation: Protect your rights

Division of property, family residence, children, parental union: our lawyers guide you through every step of your separation.
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The Separation of Common-Law Partners

The end of a common-law relationship often raises many questions, particularly regarding the division of property, the family residence, children, and each partner’s financial obligations.
Unlike married or civilly united couples, common-law partners generally do not benefit from the same protections provided under the Civil Code of Québec. As a general rule, separation does not result in an automatic division of property or entitlement to spousal support between former partners, and common-law partners are not subject to the family patrimony — a regime reserved for married couples, which is established upon marriage.

However, this does not mean that no rights exist. Property acquired jointly, such as a jointly owned residence, remains subject to the general rules of civil law and may be divided according to each person’s ownership rights. Other legal remedies may also be considered depending on the particular circumstances of the case.

The Same Rules Apply When It Comes to Children

However, it is important to make a distinction when it comes to children born to common-law partners. Although common-law partners generally do not have the same property rights as married couples, different rules apply when children are involved.

Whether you are married, civilly united, or common-law partners, both parents have the same rights and the same responsibilities toward their children.

Accordingly, the same legal principles apply, in particular, to:

In all cases, the best interests of the child remain the fundamental criterion guiding the court’s decisions. Parents’ rights and obligations therefore do not depend on their marital status, but rather on the child’s needs and circumstances.

The New Law on Parental Union

Since June 30, 2025: Québec recognizes a new legal regime called parental union.

This regime automatically applies to common-law partners who become the parents of a child together on or after this date. Without treating these couples the same as married couples, the law now provides certain protections, particularly regarding the parental union patrimony, which may include certain family assets, such as the family residence or the furniture that furnishes it, when the conditions provided by law are met.

However, the application of this new regime depends on several criteria and does not apply to all common-law partners. A legal assessment is often necessary to determine each person’s rights and obligations.

First Consultation

Common-law separation? Your rights exist — have them assessed by a lawyer.

Favor an Amicable Agreement

Regardless of the nature of your relationship, it is often possible to resolve the consequences of separation through negotiation or mediation.

An amicable agreement generally helps reduce the delays, costs, and stress associated with court proceedings, while promoting solutions tailored to your family’s circumstances. Whenever possible, our team takes a collaborative approach to help the parties reach a lasting resolution while protecting their rights and interests.

Frequently Asked Questions About Common-Law Separation

1. Is it mandatory to go to court when separating?
No. Many cases can be resolved amicably through negotiation, family mediation, or a written agreement between the parties. When an agreement cannot be reached or certain issues remain in dispute, court proceedings may be necessary.
Yes. Common-law partners can enter into a cohabitation agreement or separation agreement to address, among other things:
Such an agreement can often help prevent disputes and provide better protection for each person’s interests.
Every separation is different, and the legal consequences may vary depending on several factors, including the presence of children, the property owned by the partners, and the potential application of the parental union regime. A lawyer can assess your situation, inform you of your rights and available legal remedies, and guide you toward the most advantageous solution.
Yes, but there is no automatic division as there is with the family patrimony of married couples. Each partner generally remains the owner of the property belonging to them. Property held in joint ownership, such as a residence purchased together, as well as movable property and vehicles, is divided according to each person’s ownership rights or in accordance with any agreement reached between the parties.
Parental union is a new legal regime that came into effect on June 30, 2025. It automatically applies to common-law partners who become the parents of a child together on or after this date, unless they choose to opt out when permitted by law. This regime provides certain protections concerning family assets, without treating common-law partners the same as married couples.
No. Parental union does not apply to all couples living in a common-law relationship. It only applies when the conditions provided by law are met, particularly to common-law partners who become the parents of a child together on or after June 30, 2025. Each situation must be assessed individually to determine whether this regime applies.
Yes, absolutely. This can be done before a notary by means of a notarized deed. Once they opt into the regime, the rules applicable to parental union apply in accordance with the terms provided by law. Before making this decision, it is recommended to consult a lawyer or notary to fully understand the legal consequences of opting into parental union on your financial and family situation.

Are you going through a common-law separation?

Do you have questions about a common-law relationship? Our lawyers, who primarily practice family law and youth protection law, can advise and represent you to protect your rights and those of your child. Contact us for an initial consultation.

Nassou Diop

Legal Technician

Driven by the legal field, particularly family law, Nassou Diop brings her rigor, professionalism, and versatility to the Riendeau Avocats team.

As a legal technician, she supports the lawyers in tracking their files and handling all the legal and administrative tasks necessary for the smooth execution of mandates.

Organized, discreet, and empathetic, Nassou places great importance on the quality of customer service. Her active listening skills and dedication to a job well done make her a valuable collaborator for both clients and colleagues.

Me Coralie Andende

Director of the family law department

Me Coralie Andende has been a member of the Barreau du Québec (Quebec Bar) since 2012 and joined our team in June 2026 as Lawyer – Team Lead.

Over the course of her career, she has developed diverse experience notably in family law, youth law, debt collection, civil litigation, and housing law.
Before joining our firm, she practiced for nearly eight years within a CIUSSS, where she gained in-depth knowledge of matters related to youth protection, children’s safety and development, as well as complex family issues. This experience allows her today to approach each case with a comprehensive, strategic, and pragmatic vision.

An experienced litigator, Me Andende represents her clients before the Court of Québec, the Superior Court, and various administrative tribunals. Her mastery of judicial procedures, rigorous preparation, and determination allow her to effectively defend her clients’ interests.

Recognized for her calm demeanor, attentiveness, and human approach, Me Andende prioritizes building a relationship of trust with her clients. She supports them with rigor and empathy in defending their rights, offering solutions tailored to their reality and ensuring effective management of their cases.

Me Karen Godefroy

Family Lawyer

Me Karen Godefroy joined the Riendeau – Family Law team in January 2026. A member of the Quebec Bar since 2024, she is distinguished by her strong commitment to upholding human values.
Upon her admission to the Bar, Me Godefroy focused her practice on representing the CIUSSS de l’Est-de-l’Île-de-Montréal in mental health law, where she gained extensive experience handling sensitive cases requiring legal rigor, discernment, and compassion.
Driven by a desire to practice in areas where people are at the center of the issues, she subsequently continued her practice in labor law and family law, developing hands-on expertise in these fields before joining the firm Riendeau Avocats.
Recognized for her human-centered approach, strong listening skills, and dedication, Me Godefroy places particular importance on understanding her clients’ needs. Her professional rigor and sense of responsibility enable her to provide strong representation in her cases while maintaining a relationship of trust with her clients.
Education and Professional Affiliations

  • Faculty of Law, Université Toulouse I Capitole – Master’s Level I
  • Faculty of Law, Université de Pau et des Pays de l’Adour – Master’s Level II
  • School of Continuing Education, Université de Montréal
  • Member of the Quebec Bar

Valérie Lafontaine

Legal Technician

A dedicated legal technician, Valérie graduated from Institut Teccart as a legal technician in April 2020, having completed her internship with the Superior Court.
Being naturally empathetic and having a strong interest in family law, she joined the Riendeau – Family Law team in September 2020.

Me Marie De Santis

Family Lawyer

Marie De Santis is a member of the Quebec Bar and joined the team in May 2025.

Holder of a Bachelor’s and a Master’s degree in law, she completed her Bar internship with the Director of Criminal and Penal Prosecutions (DPCP). Throughout her training, she was involved with multiple associations and legal clinics, specializing in family law, criminal law, and the law of persons.

Her multicultural background and openness to the world enrich her perspective on complex cases and enable her to support clients from diverse backgrounds with sensitivity, rigor, compassion, and respect. Her clients benefit from strong technical representation and attentive, personalized support at every stage of the process. Highly attentive to the general and specific needs of children, she ensures that each step of the process prioritizes their best interests and well‑being.

Her practice encompasses cases involving divorce, annulment of marriage, and separation, as well as matters related to termination of parental authority, parenting time, child support, and adoption.

Education:
LL.B. (Bachelor of Laws, Université de Montréal and Université Paris II Panthéon-Assas), 2022
LL.M. (Master of Criminal Law, Université de Sherbrooke), 2023
Comparative Law of African States and OHADA (Université Cheikh Anta Diop, Dakar, Senegal), 2020
Public and Criminal Law of Asian States (Keio University, Tokyo, Japan), 2021
Introduction to Criminology Seminar (Université Paris II Panthéon-Assas), 2022

Languages:
French
English

Mélissa Belaroussi

Legal secretary
Mélissa Belaroussi is a legal secretary at Riendeau Avocats. Passionate about the legal field and known for her strong professional rigor, she supports the team of lawyers in managing complex cases. Her versatility and organizational skills make her a valuable asset in ensuring the smooth handling of legal matters within the firm. Always committed to providing excellent service, she works closely with clients and lawyers to ensure the proper conduct of legal procedures.

Me Yann Yankey

Family and Employment Law Lawyer

Me Yann Yankey has been a member of the Quebec Bar since 2021. Passionate about law and deeply committed to defending human values, he gained valuable experience right after his admission to the Bar by working on various labor law cases at the Commission des normes, de l’équité, de la santé et de la sécurité du travail (CNESST).

Driven by his desire to make a difference, Me Yankey naturally directed his career towards family law. He joined the family law team at Riendeau Avocats in September 2024, bringing with him an unwavering commitment to providing quality legal and emotional support to his clients with a human-centered approach. Specializing in child custody, alimony, and divorce cases, Me Yankey stands out for his attentive listening, strong writing skills, rigorous analysis, and calm demeanor even in the most delicate situations. With his wealth of experience, Me Yankey also handles cases in civil law, labor law, and uncontested adoption matters.

Beyond his undeniable legal skills, Me Yankey is known for his warm personality and human approach. His smile and friendliness make him not only a competent lawyer but also a very pleasant person to work with, providing his clients with reassuring and personalized support.

Portrait professionnel de Me Rosalie Larouche, Directrice du département de droit familial, Avocate.

Me Rosalie Larouche

Department Head

Rosalie Larouche is the head of the Family Law Department.

Her focus includes family conflicts in the Superior Court, such as child custody, divorce, child and spousal support requests, as well as matters related to youth protection in the Youth Division of the Quebec Court.

Arts and music hold a special place in Me Larouche’s life. Before practicing law, she worked as Communications Manager for Jeunesses Musicales du Canada and later as Artistic Coordinator for the Concours Musical International de Montréal.

A member of the Bar since 2020, Me Larouche holds degrees in law from the Université du Québec à Montréal, in piano from the Royal Conservatory of Music in Brussels, and in cultural organization management with honors from HEC Montréal.

She serves on the board of the Festival de Lanaudière and is a member of the Association des Avocats et Avocates en droit de la famille du Québec.

Portrait professionnel de Me Leila Nemouchi, Adjointe juridique.

Me Leila Nemouchi

Legal Assistant

With years of experience in administrative roles and customer service, Leila is an experienced professional dedicated to optimizing efficiency and client satisfaction. Her extensive background enhances our team’s commitment to providing superior quality service.

Me Aurélie Messang

Family Lawyer

Me Aurélie Messang joined our team as a student-at-law and later as a family law attorney. Her practice includes handling divorce, separation, parenting time, child support, and adoption cases. 

Ms. Messang recognizes the sensitivity of family matters and will guide you through the process with care. Meticulous and attentive to client concerns, she is dedicated to fiercely advocating for your interests.

Education and Memberships:

Faculty of Law, Nancy (Master’s I)
Faculty of Continuing Education – Université de Montréal
Member of the Barreau du Québec
Languages: French

Me Sofia Perez

Lawyer

Ms. Perez joined the Riendeau Lawyers team as a lawyer after completing her Bar internship. A graduate of the Université de Montréal, Me Perez practices before the Superior Court of Quebec, covering all aspects of family law, including divorce, child custody, alimony, and financial interests division.

In her practice, Me Perez stands out for her humane approach, attentive listening, and professionalism. Committed to safeguarding her clients’ interests, she will guide you towards sustainable and appropriate solutions for your situation.

Education and Memberships:

University of Montreal (LL.B)
Member of the Barreau du Québec
Languages: French, English, Spanish

Me Ndeye Ndoye

Family and civil law lawyer

Ms. Ndoye joined the family team at Riendeau Avocat in January 2022. A member of the Quebec Bar since 2015, her experience and expertise are valuable assets to our firm, her areas of practice include civil law, family law, youth law, international law, and international child abduction.

Ms. Ndoye studied law in Africa, France, and Canada, earning multiple law degrees from universities on three different continents. This diversity has equipped her with solid knowledge in international law.

Over the years, she has successfully litigated significant cases in the Superior Court and the Court of Appeal of Quebec, covering civil law, family law, and international law. Dedicated to her clients’ interests, she consistently goes above and beyond to reassure them and provide the best chances of success.

Education and Memberships:
LL.L : University of Ottawa
PhD (Doctorate) in Law: University of Strasbourg (France)
Master’s in Law: University of Perpignan (France)
Bachelor’s in Business Law: Université Gaston Berger (Saint-Louis)
Languages: French, English

Andréann Paquin

Legal Technician

Andréann graduated from Collège Ahuntsic in Legal Techniques in May 2020 and spent a year as a court clerk at the Superior Court.

With Riendeau since January 2021, she is deeply passionate about law and legal research. Organized and efficient, Andréann has applied her clerkship skills and knowledge to benefit our firm.

Marie de Guise

Law student
Graduating from the University of Montreal in 2024, Marie de Guise first worked as a student in the family law team at Riendeau Avocats. She then joined the team as an intern in 2025, under the supervision of experienced lawyers.

Marie de Guise practices family law, focusing primarily on parental time, child support, and youth law. Empathetic and attentive, Marie de Guise understands the delicate issues in her cases and supports her clients through their legal processes.

Marie de Guise won the award for Best Litigator in Canada in a national moot court competition in 2024. She will defend your case with determination in court.
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