For many modern couples, buying a home together is a moment of hope and promise—a tangible step towards a shared future. The decision to co-purchase a property often springs from deep commitment, whether or not there’s a ring involved. However, when that commitment isn’t formalised through marriage, the legal footing under that shared investment becomes significantly less secure.
At Buckles, we often meet clients who are surprised to learn just how vulnerable they are under UK law when purchasing property as an unmarried couple. Unlike their married counterparts, cohabiting couples have no automatic legal rights to each other’s assets, regardless of how long they have lived together or how much they have contributed. This reality can come with devastating financial consequences, unless proper legal protections are put in place.
Asking the important questions upfront
It’s easy to get swept up in the logistics of house-hunting: mortgages, surveys, offers. But long before you pop open the celebratory champagne, there are harder, more personal conversations that must be had – ideally before you sign a contract or transfer a deposit.
Who’s paying what? Who will be on the deeds? What happens if we separate? What if one of us wants to sell? What if one of us dies?
These aren’t unromantic questions. They’re the foundations of joint homeownership. And avoiding them can mean building on shaky ground.
Discussing expectations early helps set a precedent for fairness, honesty, and practical planning. If one person is contributing a larger deposit or covering more of the mortgage, that should be recorded and respected. If one partner is temporarily unable to contribute financially due to maternity leave, redundancy, or illness, how will that affect ownership or repayments?
We understand these conversations are not always easy to begin. Talking about finances and the potential for separation can feel like a cloud over the sunny horizon of your new life together. But, just like taking out home insurance or writing a Will, legal planning isn’t a sign of mistrust. It’s a sign of maturity, care, and shared responsibility.
Framing the discussion around fairness and mutual protection can help ease the discomfort. You’re not preparing for failure; you’re investing in clarity, security, and peace of mind. You’re saying: “I value what we’re building together, and I want to make sure it’s safe for both of us.”
Too often, we see cohabiting couples facing unnecessary legal disputes because they didn’t seek advice early on. Whether it’s a breakup that leaves one partner locked out of their home or a tragic bereavement where a surviving partner has no claim to the property they called home. These are not rare scenarios. And courts cannot always offer a sympathetic solution if there is no written agreement to fall back on.
Legal safeguards are not just about protecting assets, they’re about protecting people from drawn-out litigation, unexpected financial loss, and emotional strain at life’s most vulnerable moments.
Planning for property ownership
There remains a persistent, and dangerous, belief in “common law marriage.” The assumption is that simply living together for a long time offers the same rights as a legally recognised marriage. But under UK law, this idea holds no legal weight. Unmarried partners are not entitled to a share in property or assets by default, no matter how entwined their lives may feel.
In real terms, this means if you buy a house with your partner and the relationship breaks down, you could find yourself with no legal claim to a property you’ve financially supported for years, unless you’ve put the right legal documents in place.
For example, imagine you and your partner put down a deposit on a house. One of you pays 70%, the other 30%. You split the mortgage and bills going forward. Without a legal agreement, that 70/30 contribution could vanish into ambiguity should the relationship falter. Similarly, if one of you passes away unexpectedly without a Will or formal ownership rights, the surviving partner may find themselves without a home.
It’s in these emotionally and financially charged moments that the absence of legal clarity can deepen heartbreak. That’s why legal instruments like Cohabitation Agreements and Declarations of Trust are so vital they provide a framework that reflects your intentions and protects your contributions.
What is a Cohabitation Agreement?
A Cohabitation Agreement is a legally binding contract that sets out how you and your partner will manage your finances while living together and what happens if your relationship ends. More than just a tool for emergencies, it lays out clear expectations while you’re happily cohabiting, making joint living smoother and more transparent.
Such an agreement can specify how you will divide your property, how you’ll manage household expenses, and what should happen to jointly owned items. It may also include arrangements around debts, pets, and even ongoing support in the event of a breakup.
By openly discussing and recording these matters from the outset, couples often report stronger relationships and less financial stress. It’s not about planning for failure, it’s about fostering fairness, mutual respect, and future-proofing the life you’re building together.
What is a Declaration of Trust?
While a Cohabitation Agreement reflects the broader picture of your financial lives, a Declaration of Trust focusses solely on one of your most significant shared assets: your home.
This legal document, also known as a Deed of Trust, specifies the precise ownership proportions of a property. It records who contributed what to the deposit, who pays what towards the mortgage, and how proceeds should be divided if the property is sold or one partner decides to move out.
Think of it as a map of both your financial contributions and your intentions. If you put in more money, it ensures that equity is reflected in legal ownership. Without a Declaration of Trust, courts are unlikely to consider verbal agreements, no matter how sincere they felt at the time.
Don’t forget the Will
When it comes to homeownership, Wills are often the missing link in many couples’ legal arrangements – particularly for those who are unmarried. You might assume that if something were to happen to you, your partner would “naturally” inherit your share of the property or other assets. But in the eyes of the law, that’s simply not the case.
Under UK intestacy rules, unmarried partners do not automatically inherit anything, not even jointly owned property if it is not structured correctly or if they’re not included in a Will. This means that your surviving partner could lose their home, face financial hardship, or even enter into disputes with other family members during an already devastating time.
By drafting a valid Will, you gain control over where your share of the property and other assets go after your death. It allows you to:
- Name your partner as a beneficiary, ensuring they receive your share of the home or other assets;
- Appoint guardians for children or dependants if relevant;
- Set aside funds for things like funeral arrangements or ongoing care;
- Minimise the risk of family disputes over your estate;
- Coordinate your Will with a Declaration of Trust for property to ensure your intentions are legally consistent.
In combination with a Cohabitation Agreement and Declaration of Trust, a Will forms a comprehensive, interlocking legal framework that gives both partners long-term peace of mind.
While it may be uncomfortable to contemplate worst-case scenarios, doing so now can prevent your partner from having to navigate legal and financial uncertainty later. It’s one final expression of the same care, commitment, and responsibility that likely led you to buy a home together in the first place.
Taking the next step with confidence
Buying a home is about creating a life together, not inviting uncertainty. With the right legal tools in place, you can ensure your relationship’s emotional commitment is matched with legal clarity. That way, no matter what the future holds, both partners are treated with fairness and respect.
At Buckles, our family law specialists work with couples to put fair, bespoke agreements in place that reflect each person’s contribution and vision for the future. Whether you are planning to buy your first home or you’ve already taken that step, it is never too early (or too late) to seek advice.
We offer expert guidance on drafting Cohabitation Agreements, Declarations of Trust, and Wills for cohabiting couples. Our aim is always to equip you with practical, compassionate advice tailored to your circumstances, so you can move forward together with confidence and security.
