A client called me last month with a question I’m hearing more and more: “Can my sister and I buy a house together?”
The answer is yes. And she’s not alone in asking. According to recent data from RE/MAX, 28% of prospective home buyers are considering co-buying with family or friends to get into homeownership. Rocket Mortgage reports that 11% of homebuyers plan to purchase with a friend in 2026.
With the median home price in the Denver metro sitting above $600,000 and mortgage rates hovering near 6%, co-buying is becoming a practical strategy for people who want to stop renting and start building equity. Here’s how it works in Colorado, what you need to know before you jump in, and the mistakes to avoid.
What Is Co-Buying, Exactly?
Co-buying simply means two or more people purchase a property together. They share the mortgage, the down payment, ongoing costs, and the equity that builds over time.
This isn’t a new concept, but it’s gaining serious traction. Rising home prices have pushed solo ownership out of reach for many buyers, especially first-timers. Combining two incomes opens doors to better loan terms, larger down payments, and more competitive offers.
Common co-buying arrangements I see in Colorado include siblings purchasing together, unmarried couples buying their first home, friends pooling resources, and adult children buying with a parent who contributes the down payment.
How Colorado Law Handles Co-Ownership
In Colorado, there are two main ways to hold title on a property with another person. Understanding the difference matters more than most people realize.
Tenancy in Common (TIC): This is the default in Colorado law. Each owner holds a separate, undivided interest in the property. Ownership shares can be unequal. If one person contributes 60% of the down payment, they can own 60% of the property. If a co-owner passes away, their share goes to their estate (not automatically to the other owner).
Joint Tenancy with Right of Survivorship (JTWROS): Both owners hold equal shares. If one owner passes away, the surviving owner automatically inherits their share. This must be explicitly stated in the deed using the phrase “as joint tenants with right of survivorship.” It doesn’t happen automatically.
For friends or siblings co-buying, tenancy in common usually makes more sense because it allows for unequal ownership percentages. For couples planning to build a life together, joint tenancy offers simpler survivorship protections.
The Mortgage: Everyone Is on the Hook
Here’s the part that makes some people nervous, and rightfully so. When you apply for a joint mortgage, the lender looks at all borrowers’ credit scores, income, and debt. Everyone’s debts count toward the group’s total debt-to-income ratio.
The benefit: combining incomes can qualify you for a significantly larger loan. Two people earning $75,000 each have much more buying power than one person earning $75,000.
The risk: each co-borrower is legally responsible for the full mortgage payment, not just their portion. If your co-buyer stops paying their half, the lender doesn’t care who was supposed to pay what. They’ll come after both of you, and missed payments will damage both credit scores.
This is why a co-ownership agreement is essential. More on that in a moment.
Financial Benefits of Co-Buying in Colorado
Let’s look at real numbers. Say you’re eyeing a $500,000 home in Parker. Solo, you’d need:
Down payment (10%): $50,000
Closing costs (3%): $15,000
Monthly mortgage (6% rate, 30-year): approximately $2,700
Add taxes, insurance, HOA: approximately $3,500 total per month
Split two ways:
Down payment each: $25,000
Closing costs each: $7,500
Monthly cost each: approximately $1,750
At $1,750 per month, you’re paying less than many one-bedroom apartments in the Denver metro. But instead of paying a landlord, you’re building equity in a real asset.
Over five years at 4% annual appreciation, that $500,000 home could be worth $608,000. That’s $108,000 in equity, split between two owners. Try getting that return from a rental.
The Co-Ownership Agreement: Don’t Skip This
This is the single most important step in any co-buying arrangement, and the one people most often skip. A co-ownership agreement is a legally binding document that spells out the rules of your partnership.
At minimum, your agreement should cover:
Ownership percentages and how they were determined. Monthly payment responsibilities and what happens if someone can’t pay. How expenses are split for maintenance, repairs, and improvements. Exit strategy covering what happens if someone wants to sell their share, including right of first refusal, timeline, and how the buyout price is determined. Dispute resolution outlining whether you’ll use mediation, arbitration, or another process. Property use rules such as who lives in which areas, guest policies, and renovation decisions.
A real estate attorney in Colorado can draft a co-ownership agreement for $500 to $1,500. That’s a small price to protect a relationship and a major financial investment.
Tax Implications for Co-Buyers
Both co-owners can deduct mortgage interest and property taxes on their federal tax returns, proportional to their ownership share. If you each own 50%, you each deduct 50% of the eligible expenses.
The capital gains exclusion is another benefit. Each owner who uses the property as their primary residence for at least two of the past five years can exclude up to $250,000 in capital gains when selling. For a co-owned property, that’s a combined $500,000 exclusion.
Talk to a tax professional about your specific situation. The rules get more complex if one co-owner doesn’t live in the property or if ownership percentages change over time.
When Co-Buying Doesn’t Work
I’ll be direct: co-buying isn’t right for everyone. It tends to go wrong when expectations aren’t aligned from the start. One person wants to sell after three years while the other planned to stay for ten. One person treats the house casually while the other wants everything maintained perfectly. Financial situations change and one person can no longer afford their share.
Before committing, have honest conversations about your financial health, timeline, lifestyle expectations, and what happens if life throws a curveball. If those conversations feel uncomfortable, that’s actually useful information. If you can’t talk openly about money and plans now, co-owning a property together will only amplify those tensions.
Getting Started with Co-Buying in Colorado
If co-buying sounds right for your situation, here’s my recommended sequence:
First, have a detailed financial conversation with your co-buyer. Share credit scores, debts, income, and savings openly. Second, get pre-approved together so you know your combined buying power. Third, hire a real estate attorney to draft your co-ownership agreement before you start house hunting. Fourth, work with a REALTOR who understands co-buying transactions and can guide the process.
The housing market right now actually favors co-buyers. Inventory is growing, sellers are more willing to negotiate, and mortgage rates, while not low by historical standards, are stable. Two qualified buyers shopping together have real leverage.
Homeownership shouldn’t be a solo struggle. Sometimes the smartest path forward is building something together.
Related: First-Time Home Buyer Guide for Colorado | Mortgage Rate Lock Strategies | Home Appraisal Guide
Thinking about buying or selling a home in Colorado?
Your home journey should feel exciting, not overwhelming. As your trusted advisor, I am here to make sure it does.
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Prerna Kapoor is a REALTOR® and Certified Luxury Home Marketing Specialist (CLHMS) with REAL Brokerage, specializing in residential real estate across Parker, Aurora, Lone Tree, Castle Pines, Highlands Ranch, Cherry Creek, Greenwood Village, and Centennial. She is fluent in English, Hindi, and Japanese (native) and is recognized as an International Sterling Society Award winner (2023, 2024, 2025). Prerna holds the RENE (Real Estate Negotiation Expert), PSA (Pricing Strategy Advisor), and ABR (Accredited Buyer’s Representative) designations.
