Deciding to move in together is a significant and exciting step. While it may feel unromantic to think about legal documents at such a positive time, putting the right protections in place early could save you considerable stress, expense, and heartache in the future. A cohabitation agreement is one of the smartest and most practical decisions any unmarried couple can make. At MPG Solicitors in Cardiff, our experienced family law team is here to help you get it right from the start.
What Is a Cohabitation Agreement?
A cohabitation agreement is a legal document between unmarried partners who live together, outlining how finances, property, and other shared matters will be handled, both during the relationship and in the event of a change in circumstances. Sometimes referred to as living together agreements, these documents provide clarity and a firm legal framework that can help prevent costly disputes between cohabiting couples in the future.
Contrary to popular belief, there is no such thing as a “common law spouse” under English and Welsh law. Unmarried couples have very limited automatic legal rights when a relationship ends, compared to married couples, regardless of how long they have lived together. Without a properly drafted agreement in place, you may have little legal protection over shared property, financial arrangements, or personal belongings. This is true even if you have been cohabiting for many years and consider yourself as committed as any married or civil partnership couple.
What Does a Cohabitation Agreement Cover?
Every couple has unique circumstances, but a thorough cohabitation agreement checklist will typically address the following key areas:
- Property ownership: including how any shared property or family home will be divided if the relationship ends
- Mortgage payments: determining each party’s contribution and what happens if one person cannot or will not continue paying
- Household expenses, household bills, utility bills, and how any joint bank account will be managed
- Personal belongings and shared assets: establishing clear ownership to avoid disagreement later
- Property or savings held individually: ensuring these remain protected and are not subject to dispute
- How the agreement will be updated if circumstances change, including having children, receiving an inheritance, or changes in employment
It’s essential to include the right clauses for your situation. Our solicitors will work closely with you to ensure nothing important is overlooked and that every element of the agreement is tailored to protect your financial interests and those of your partner.
Why Using a Solicitor Is Essential for Cohabiting Couples
For a cohabitation agreement to be legally binding and withstand scrutiny, it must be prepared correctly. Both parties must fully disclose their financial assets and liabilities before signing the agreement. Each person should also receive independent legal advice from their own solicitor, so they fully understand the legal obligations and implications of every clause. Crucially, the agreement must be entered into voluntarily, free from any pressure or undue influence; otherwise, its enforceability could be challenged in court proceedings.
Online templates may seem like a quick and affordable option, but they cannot account for your individual situation or ensure your agreement meets the legal requirements needed to make it enforceable. Our experienced cohabitation agreement solicitors will draft a robust legal document that properly reflects your intentions, provides clear protection, and gives you confidence that your financial future is secure.
Protect Your Future With Our Family Law Team
Signing a cohabitation agreement before you have even unpacked the moving boxes might feel unnecessary, but choosing to live together without any legal protection in place is a risk that too many couples only recognise when it is too late. Cohabiting couples may find that what seemed like a minor misunderstanding quickly escalates into a serious and expensive legal dispute over shared assets, mortgage payments, or property ownership. A cohabitation agreement removes that risk by clearly defining both parties’ rights and responsibilities.
It is also worth reviewing your agreement as your life together evolves. Circumstances change, whether you decide to buy property together, start a family, or one partner takes a career break, and your legal document should reflect those changes. Our family law team at MPG Solicitors will help you keep your agreement up to date and ensure it continues to protect your assets.
Need a Cohabitation Agreement? Contact MPG Solicitors Today
Whether you are planning to move in together for the first time or have been cohabiting for years without any formal arrangement, it is never too late to seek legal guidance and safeguard your financial future. MPG Solicitors in Cardiff offers clear, compassionate, and expert legal advice to unmarried couples across Wales and England. Our experienced family law solicitors are ready to help you draft an agreement that protects you both.
Complete the form on our website or call our Cardiff office today to speak with one of our experienced cohabitation agreement solicitors and protect your future.



