Homeownership with your partner, simplified.

Co-ownerOS™ is an app for unmarried couples to manage homeownership. Protect and grow, together.

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By the original co-ownership experts.

CoBuy featured by

Homeownership is tough for unmarried couples.
With Co-ownerOS™, it's easy.

We’ve spent 46,500+ hours and helped hundreds of unmarried couples navigate co-ownership to bring you Co-ownerOS™.

Streamline decision-making

Tackle big decisions—and little ones, too—with expert guidance at every step. Co-ownerOS™ makes it easy to discuss and get on the same page about finances, ownership interests, rights and responsibilities, risk-handling, and more.

No guesswork, no uncomfortable chats.

Product animation shows how Co-ownerOS™ simplifies decision-making for unmarried couples who co-own a home.

Product animation from Co-ownerOS™ shows ability of unmarried couples who co-own a home to create and digitally sign Co-ownership Agreements on the platform.

Create customized agreements

You love each other, but that's not a legal framework. Co-ownerOS™ helps you get everything in writing to clarify mutually-agreed terms and protect one another.

Create your Co-ownership Agreement

Generate a Memorandum of Agreement

Digitally sign to execute from anywhere

Update anytime with a few taps

Plan for the future

Things change. It's not just a breakup you have to think about. Define your exit strategy to ensure a smooth transition for the eventual sale, transfer, or unwind of your co-ownership arrangement.

Product animation shows how Co-ownerOS™ simplifies creating an exit strategy for unmarried couples who co-own a home.

Product animation shows how Co-ownerOS™ simplifies managing documentation around co-ownership for unmarried couples who co-own a home.

Manage paperwork, like a boss

Keep track of all your important files, records, and receipts related to co-ownership in one place. Your secure document vault provides easy access, sharing, and version control.

Blockchain authentication from both partners keeps things transparent and ensures your docs are always there when you need them.

How it works

Plan, manage, and track co-ownership with your partner—in one place.

Don't wing it.

Take control of home co-ownership.

	Wing it	Attorney-drafted	Co-ownerOS™ Pass May 20-27 only
Cost	TBD	$7k-$10k+ *	Lifetime from $1,199 Annual from $399
Risk level	High	High	Low
Planning	None	Low	Guided
Protection	None	Low	Strong
Guidance	None	None	Ongoing
Support	None	None	Ongoing

*Sources: ABA 2024, Thomson Reuters 2025.

💪 No guesswork, more upside.

Save $10k on upfront legal fees

Save 120 hours a year on admin

Avoid conflict, court, and probate

FAQs

Your questions, answered.

What is co-ownership?

Co-ownership is when two or more people who are not married to one another own a home together.

Friends, family members, couples—or any combination—can own a home together.

Co-ownership is sometimes called shared homeownership or joint homeownership.

What is Co-ownerOS™?

Co-ownerOS™ is an app to help you plan, structure, and manage co-ownership together efficiently and effectively.

What does it do?

With Co-ownerOS™, you’re able to manage co-ownership like a pro:
‍
🤝 Streamline decisions
💸 Plan finances, expenses, payments
📝 Create a Co-ownership Agreement in 45 minutes
✍️ Digitally sign from anywhere
🔐 Manage key documents
🚪 Define an exit strategy
🪄 Update anytime

Co-ownerOS™ puts you in control over the full co-ownership lifecycle.

• Avoid guesswork and conflict
• Save $1,000s on legal fees
• Save 120 hours a year on admin
• Protect relationships, investments, and the home

Why wing it when you can de-risk, protect, and build wealth?

Who is it for?

Co-ownerOS™ serves both Co-buyers and Co-owners:

✅ Co-buyers planning to purchase a home together.
✅ Co-owners who already share a property.

It works for relationship types including:
‍
• Friends
• Relatives
• Unmarried partners
• Any combined group

We support groups of up to four people on Title to a U.S. residential property.

We're working on expanding access for more use cases.

What if we don't co-own a home yet?

Great—Co-ownerOS™ is built for Co-buyers too:

• Align budgets, contributions, and risk safeguards before you make an offer.
• Co-create terms and generate your agreement in minutes, ready for digital signatures at closing.
• Stay on one platform from first brainstorm through exit strategy—no hopping between apps.

Ready to start?
‍
See our Pricing page.

Want a primer first? Explore our free course: How to CoBuy a Home with Friends, Family, or Your Partner.

Our co-owners say it best

"CoBuy was most helpful in ironing out the details and helping us ask questions we might not have asked. To have a structured agreement is great."

CoBuy customers Starla and Robert, an unmarried couple who own a home together.

Starla, Robert

Unmarried Couple Co-owners

"Here are people who know how it works. I feel like our investment is protected and know that if something should happen, we have a plan in place."

Candace, Gabriel

Unmarried Couple Co-owners

CoBuy customer Genya talking about co-owning a home with her partner and their family members.

"We had a lot of what-ifs. Each of our parents are [financially] involved as well. The big things for us: to make sure everyone is on the same page and feels secure in their investment.

Having a step-by-step process helps, especially with the nitty gritty. It makes things feel feasible and reasonable.

Now it’s like ‘if that happens, we've already got this plan in place’.

I would absolutely recommend CoBuy!"

Genya, partner, family

Unmarried Couple + Family Co-owners

✨ Reserve Your Pass

Limited‑time campaign. 200 passes only — May 20 – 27.

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