Ohio
Cohabitation agreements in Ohio: rights you have to write yourself Cohabitation agreements in Ohio: rights you have to write yourself
Cohabitation agreements in Ohio: rights you have to write yourself
Ohio drew a line on October 10, 1991: common-law marriages validly formed in Ohio before that date remain marriages; nothing formed after it counts, ever. For every modern unmarried couple in Ohio, the legal reality is stark — no equitable property division on separation, no spousal support eligibility, no automatic inheritance, no default authority in a hospital hallway. Ohio courts treat separating partners as legal strangers with, at most, contract and property claims against each other. Title controls. Paper controls. Memories don't.
A cohabitation agreement replaces that vacuum with rules you actually chose — and Ohio enforces such contracts like any other.
What Ohio's defaults actually do
The house follows the deed: a partner who paid half the mortgage for fifteen years without title holds an unjust-enrichment theory and a court date, not equity. Accounts follow their named owners. No support obligation survives separation regardless of who sacrificed what for whose career. At death, Ohio intestacy routes everything to blood relatives — an unmarried partner of thirty years inherits nothing without a will, and may not even control the funeral. Ohio case law does allow contract-based claims between former cohabitants, but litigating an implied deal is expensive archaeology. Writing an express one is an afternoon.
The exception running the other way: children. Parentage, custody, parenting time, and child support in Ohio don't depend on marriage — those rights and duties attach once parentage is established, on their own track.
What an Ohio cohabitation agreement should cover
- The home — ownership shares, contribution treatment (gift, loan, or equity — decide in writing now), buyout and sale mechanics with deadlines.
- Money and debts — joint versus separate, expense-sharing, and unwinding rules.
- Contribution imbalances — a partner who steps back from earning, or who pours work into the other's business, gets exactly what the agreement says and nothing more. Ohio law adds nothing.
- Business interests — labor or capital contributed to a partner's company: equity, wages, or gift? Unwritten, that's a lawsuit with terrible odds.
- Exit mechanics — timelines and process, so separation is administration rather than war.
And pair it with the estate documents Ohio's defaults make non-optional — wills, financial and health care powers of attorney, beneficiary designations. Ohio grants unmarried partners no status; documents grant them everything they'll have. See estate planning.
Write the rules before you need them
Brown Carrington drafts Ohio cohabitation agreements with litigation-grade precision, because we've priced the alternative.
Straight answers.
Are cohabitation agreements enforceable in Ohio?
Yes — ordinary contract principles govern, and a clear written agreement beats implied-contract litigation in every dimension: cost, certainty, and outcome.
Does Ohio recognize my pre-1991 common-law marriage?
If validly formed in Ohio before October 10, 1991 — yes, it's a real marriage, with divorce required to end it. Ohio also generally recognizes common-law marriages validly created in states that permit them.
We plan to marry eventually. Which agreement?
Sequence them: the cohabitation agreement governs now; a prenup takes over at the wedding — and since 2023, a postnup can update things later.
Does this apply to platonic co-owners — siblings, friends buying a duplex?
Identically. The vacuum and the fix are about non-marriage, not romance.
What does an Ohio cohabitation agreement cost?
Comparable to a focused estate-planning engagement, scaled to the property involved — against implied-contract litigation, the arithmetic is absurdly favorable. Couples with a house, a business, or income disparity are the obvious candidates.
Can we draft one agreement covering both the relationship and the house?
Yes — and you should. Ohio enforces the property architecture (deed-coordinated shares, buyouts, exit mechanics) most reliably when it's one coherent contract rather than scattered understandings.
What happens to our agreement if we later marry?
Plan the handoff: the cohabitation agreement governs until the wedding, then a prenup — or, since 2023, a postnup — takes over. Silent transitions create gaps; drafted transitions don't.
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Estate Planning
Estate Planning in Ohio. Divorce and Your Estate Plan in Ohio: What Changes, What Doesn't
Learn moreFamily Agreements & Planning
Family Agreements & Planning in Ohio. Family Agreements and Planning Under Ohio Law
Learn morePrenuptial & postnuptial agreements
Prenuptial & Postnuptial Agreements in Ohio. Prenuptial and Postnuptial Agreements in Ohio: The Old Rules and the New Era
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Partner