Cohabitation Agreement Solicitors

If you’re planning to move in with your partner but don’t have plans to get married, we can help you set up a Cohabitation Agreement. This makes it clear what each of your financial responsibilities are.

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Choosing the right services for you

Our team are experts in creating Cohabitation Agreements and are here to help you.

What can Cohabitation Agreements cover?

Your Cohabitation Agreement can cover a range of issues, including:

  • Who pays what share of the rent or mortgage
  • Who’s responsible for paying which bills
  • How you plan on using a shared bank account
  • Who’s responsible for any debts you incur while living together.

Cohabitation Agreements can set out the financial terms of your relationship in a clear and transparent way. This can potentially prevent these issues from causing problems in the future.

If you’ve personal assets you want to protect, such as investments, property, or assets overseas, a Cohabitation Agreement can help you to keep them safe.

Why choose Irwin Mitchell to help set up your Cohabitation Agreement?

We’re a national law firm that offers a personal, one-to-one service. We’ll give you all the information you need clearly and transparently, without using jargon.

We're recognised by independent legal guides Chambers & Partners and The Legal 500 as one of the country's leading family law firms. Having spent decades representing couples in all aspects of family law - including high net-worth cases that successfully challenged and changed the law - we're ideally placed to help you get the protection you want in your relationship.

We’ve recently acquired one of the leading family law firms in the UK, Silk Family Law. Their team will join our family teams across the UK, adding to our already nationally recognised team.

We’re a full-service law firm that can help with a wide range of legal issues, including:

  • Wills – if you’d like to change your Will to add your new partner, our Wills team can help you with that. We also have an online Will writing service that can help you write a Will if you haven’t done one before.
  • Conveyancing and property – if you and your partner are thinking about buying a new property or selling your current one, our conveyancing and property solicitors will be there to help.

Mediation support services

Mediation has become increasingly popular with couples who are entering Cohabitation Agreements.

It gives you and your partner a safe space to discuss what you’d both like from the agreement and resolve any potential issues in a non-confrontational environment.

When you come to our Cohabitation Agreement solicitors, we’ll discuss mediation with you and whether we believe it’s suitable for you and your partner.

Speak to our experts

We have the largest private client team in the UK, our team of experts are here to provide discreet legal advice to support you and your family.

We’re here to help

Complete our enquiry form and one of our experts will contact you by the next working day.


Alternatively, you can call us now.


Our opening hours are Monday to Friday 8am to 6pm (Excluding Public Holidays).

0370 1500 100

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Making an enquiry

We have several ways you can contact us, either by completing our online contact form, by phone, or using our live chat. If you start your journey online, here are the first steps to working together.
  • contact us
    Complete our online form
    We need a few details to understand your situation and the kind of support you need.
  • Few questions
    We’ll contact you by phone
    On the call our experts will ask you a few more questions to make sure we connect you with the right legal advice from our team.
  • Appointment
    We arrange a full appointment
    Your next step is an in-depth appointment with a specialist solicitor to discuss how we could advise you.

Frequently Asked Questions

A Cohabitation Agreement sets out terms on how you and your partner will share finances, childcare, and other important things during your period of living together. If the relationship ever breaks down, it can be used to inform how you separate shared finances and assets.

Cohabitation Agreements can cover a range of issues, including:

  • The repayment of your mortgage and how this is affected by factors including incapacity, lack of employment, or if one of you unexpectedly comes into a sum of money
  • Who’s responsible for bills and debts
  • Financial support during or after your relationship
  • The division of money and personal possessions
  • Child support, custody, and access rights.

Our commitment to you

Our experts always start by listening, so we understand what matters most from day one.
  • 01
    Clear legal guidance

    You will always get straightforward, honest advice, with regular updates to keep you clear on the way forward.

  • 02
    Specialist knowledge

    A wide-ranging team of trusted specialists who understand what it takes to protect your future, your family or your business.

  • 03
    Your needs first

    Whether you’re navigating complex personal situations or business decisions, we take the time to understand your world and what’s at stake.

Information to support your claim

We can help with legal guidance and advice as well as other services you might need to aid your recovery and get your life back on track.
  • Civil Partnerships

    Our family law solicitors can help you with a range of legal issues, from pre-partnership agreements to separation.

  • Cohabitation Agreements

    How we can help if you are planning to move in with your partner but aren't getting married

  • Divorce & Relationship Breakdown

    Our family law experts offer professional, caring advice if you're going through this difficult process.

  • Prenuptial Agreements

    Protect your family, assets and business interests in the case of relationship breakdown.

Recognised for excellence. Chosen for care.

  • Legal 500 Top Tier Firm UK 2026
  • Sunday Times Best Places to Work 2025
  • ePrivateClient Top Law Firms 2025
  • Chambers High Net Worth 2025