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Cohabitation Agreements: Protecting Your Rights Without Marriage

Define financial, property, and personal responsibilities clearly to protect both partners in a shared life.

What Is a Cohabitation Agreement?

A cohabitation agreement is a legally binding document between two or more people who live together in an intimate relationship but are not married. It can define how you’ll handle finances, property, and other responsibilities, and what happens if you separate. Without the automatic rights granted by marriage, this agreement fills in the gaps—so all parties are protected.

  • Clarifies financial contributions and expenses
  • Protects individual and shared assets
  • Establishes how separation will be handled
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Is a Cohabitation Agreement Right for You?

Cohabitation agreements are for anyone building a shared life outside of traditional legal structures. Whether you’re in a committed long-term relationship, co-parenting without marriage, or part of a polyamorous or non-traditional family structure not recognized by New York family law, a cohabitation agreement can help protect what matters most.

Our cohabitation agreement clients include:

  • Couples living with a partner but not married
  • Partners in polyamorous or non-traditional relationships
  • Those living with others while sharing finances, property, and other responsibilities
  • Partners who have children together or from prior relationships

Why Consider a Cohabitation Agreement?

You don’t need to be married to build a life together—but you do need a plan. A cohabitation agreement gives unmarried partners the ability to make informed, intentional choices about how they share their lives.

Clearly define what belongs to each partner and how shared or acquired property will be handled—now and in the future. This includes real estate, vehicles, investments, and household furnishings. Avoid disputes by documenting expectations up front.

Whether you have children together or from previous relationships, the agreement can outline how expenses are shared, who takes on caregiving duties, and how parenting responsibilities are managed in day-to-day life or in the event of a breakup.

Determine how you’ll split rent, groceries, utilities, and other household expenses. If one partner earns significantly less than the other or takes on a greater caregiving role, the agreement can include financial support terms.

From healthcare decisions to estate planning, a cohabitation agreement can address topics that complement your estate plans and honor your long-term wishes, so there are no gray areas in times of illness or death.

Cohabitation Agreements for Unmarried Couples Living Together in New York
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How Does a Cohabitation Agreement Work in New York?

Unlike marriage, living together doesn’t give you automatic legal rights. But a cohabitation agreement can provide those protections—if done right. At Vacca Family Law Group, we guide you through every step with care and clarity.

We’ll help you understand your options, identify what matters most, and draft a legally sound agreement that reflects your unique relationship—not a one-size-fits-all template.

  • Customized to your values and lifestyle
  • Designed to prevent future conflicts
  • Reviewed and updated as life evolves
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Your committed relationship deserves the same legal care and consideration as any marriage. Let’s create a cohabitation agreement that protects what you’ve built—without compromising your values.
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Cohabitation Agreement FAQs

Yes, as long as it’s properly drafted and both parties enter into it voluntarily, a cohabitation agreement is enforceable in New York courts. Working with a knowledgeable and experienced family law attorney ensures its validity.

Yes. A cohabitation agreement can outline financial support as well as co-parenting rights and responsibilities for children who are part of your relationship.

A prenuptial agreement is for couples planning to marry. A cohabitation agreement is for couples who are not planning to marry and want to protect their individual and shared interests.

Yes. It’s strongly recommended. Each partner having independent legal counsel ensures fairness and helps avoid future disputes about the agreement’s enforceability.

Any time before or during cohabitation. The earlier, the better—especially if you’re planning to move in together, make large purchases, or have children together.