Guide · For buyers
Smart Moves: The Co-Buying Guide
Buying a home with a partner, friend, sibling or parent can make ownership achievable sooner by sharing the cost and the responsibility. It also needs clear agreements. This guide walks through co-buying in seven steps, plus how to protect the investment afterward.
Key takeaways
- Align on the shared vision first: why you are buying together, how long each of you plans to stay, and your deal-breakers.
- Get a joint pre-approval. All co-buyers are jointly responsible for the mortgage, so one missed payment affects everyone's credit.
- Choose an ownership structure: joint tenancy (equal, with survivorship) or tenants in common (flexible shares, passes to your estate).
- Have a lawyer draft a co-ownership agreement covering shares, expenses, renovations, renting, exit and disputes.
- Pick a property that gives each party privacy and is comfortable for everyone to maintain.
- Review shared expenses every six months and keep a joint emergency fund.
Welcome to co-buying
Buying a home together is one of the smartest ways to enter today's market. For first-time buyers especially, co-buying can make ownership achievable sooner while sharing both the responsibility and the reward. This guide helps you and your co-buyers navigate the process with confidence and the right questions to ask before you start house-hunting: how co-buying works, what legal agreements are needed, how to qualify for financing together, and how to build a foundation that lasts.
Step 1: Define your shared vision
Before you talk mortgages or listings, align on goals. Ask each other:
- Why are we buying together?
- How long does each of us plan to live here?
- Is this a long-term home or an investment stepping stone?
- What are our non-negotiables, and our deal-breakers?
Honest conversations now prevent tension later. Write your answers down and revisit them as you go. A short co-buyer meeting every few weeks during the search keeps everyone aligned on priorities, timing and budget.
Step 2: Get pre-approved, together
A joint pre-approval gives everyone a clear picture of purchasing power and responsibility. Lenders look at each buyer's income, debts and credit score, the total down payment contribution from each party, and the combined debt service ratios (GDS and TDS) that show what you can comfortably afford. Once approved, decide together how much each person will contribute and how the monthly payment will be divided.
Important: all co-buyers are jointly responsible for the mortgage. If one person misses a payment, everyone's credit can be affected.
Step 3: Choose the right ownership structure
In Ontario, co-owners typically choose one of two options:
- Joint tenancy: equal ownership and equal rights of survivorship. If one owner passes away, their share automatically transfers to the other owner or owners.
- Tenants in common: flexible shares, for example a 60/40 split. Each owner's portion becomes part of their own estate.
Your lawyer will help you decide which is right for your situation. Always have each buyer's contribution recorded in writing, even among family or friends. It protects everyone fairly.
Step 4: Create a co-ownership agreement
Think of this as the rulebook that keeps friendships intact and finances protected. A lawyer drafts it, and it should include:
- Ownership percentages and financial contributions.
- How monthly expenses such as utilities, taxes and insurance are divided.
- Rules for renovations, pets, or renting rooms.
- What happens if one person wants to sell, move out or refinance.
- Dispute resolution and timelines for decision-making.
Step 5: Find the right property
This is where teamwork meets lifestyle planning. Consider:
- Layout: separate bedrooms or units for privacy.
- Parking: more than one vehicle? Check any restrictions.
- Upkeep: choose something all parties can maintain comfortably.
- Future potential: resale value and neighbourhood growth.
Once you have clarified your must-haves, Laura searches beyond MLS® listings, tapping into her network to find homes that match your combined goals and budget.
Step 6: Make an offer
When you have found the home, Laura conducts a detailed market analysis to determine fair value. Together you set an offer price, conditions such as financing, inspection and lawyer review, and the deposit. Laura prepares and submits the offer on your behalf, then works through the conditions with you until the sale is firm. Throughout this stage, both co-buyers understand every clause and are equally represented.
Step 7: Closing day
Your lawyer coordinates the transfer of funds, title registration and final paperwork. Before closing, you will arrange home insurance in all owners' names, confirm the down payment and closing costs are ready, and book a final walkthrough to confirm the property's condition is unchanged. Then the keys are yours. Take a moment to acknowledge what you have accomplished together.
After you buy: protecting your investment
Co-ownership is a partnership, and it thrives on communication and respect. Keep the investment healthy by reviewing shared expenses every six months, scheduling an annual home maintenance day, and maintaining a joint emergency fund for repairs and unexpected costs. A shared online folder or spreadsheet for payments, receipts and key documents keeps everything transparent.
When it is time to move on: life changes. Your co-ownership agreement should outline next steps if one person wants to sell or refinance. Common options are buying out the other person's share, selling and dividing the proceeds, or agreeing to rent it out under joint ownership. Open communication and legal guidance keep the process smooth and fair.
Co-buying in Ajax and Durham Region
Ajax, Whitby, Pickering and Oshawa have condos, townhomes and detached homes with in-law potential that suit co-buyers well, within reach of the GO train and the 401. If this is also your first purchase, pair this with the First-Time Home Buyer Guide. For local context, see Ajax and Pickering.
Want more?
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The full guide is above and free to read. For the designed, printable PDF plus a session with Laura to structure your co-purchase safely and start the search, enter your details and she will follow up.
Prefer to talk it through? Book a quick chat with Laura.
Co-buying: common questions
What is co-buying a house?
Purchasing a home together with one or more other people, such as a partner, friend, sibling or parent. It can make ownership achievable sooner by sharing the down payment, mortgage and ongoing costs, as well as the equity and responsibility. It works best when the co-buyers align on goals up front and put the terms in writing.
What is the difference between joint tenancy and tenants in common in Ontario?
Joint tenancy means equal ownership with right of survivorship: if one owner dies, their share automatically passes to the others. Tenants in common allows flexible shares, such as 60/40, and each owner's portion becomes part of their own estate. A real estate lawyer helps you choose.
Do co-buyers need a co-ownership agreement?
Yes. A lawyer-drafted agreement keeps the arrangement fair and the relationship intact. It should cover ownership percentages and contributions, how expenses are split, rules for renovations, pets and renting rooms, what happens if someone wants to exit, and how disputes are resolved.
Are all co-buyers responsible for the mortgage?
Yes, jointly. If one person misses a payment, every co-owner's credit can be affected. That is why a joint pre-approval and a clear written agreement on who pays what matter before you buy.
Thinking about co-buying?
Book a complimentary co-buyer session
Whether you are buying with a friend, sibling or partner, Laura can help you structure it safely, find the right property, and protect your investment. Laura McBride, REALTOR®, Revel Realty Inc., Brokerage, serving Ajax, Pickering, Whitby and Durham Region.
This guide is general information, not legal or financial advice, and is not intended to solicit clients already under contract with a brokerage.