The Eight-Month Gap That Cost a St. Catharines Homeowner $55,000

The situation

Raymond was an electrician in St. Catharines, raising his daughter Gabriela on his own since she was a toddler. He owned the home they lived in, a modest three-bedroom with a mortgage he had been paying down for years. When he started seeing Alejandro, a real estate agent, the relationship moved at a comfortable pace. After about eighteen months together, they decided Alejandro would give up his rental and move into Raymond's house.

Both of them wanted to do this carefully. Raymond had a daughter to think about, a home he had built equity in on his own, and a general sense that mixing finances without a plan was a mistake he had seen friends make. Alejandro, for his part, did not want to move into someone else's house and later have no recognition for whatever he put into it. They agreed, in principle, that a cohabitation agreement made sense — a written contract between two people who plan to live together, setting out how property, debt and support will be handled if the relationship ends. They contacted our office to get one drafted before the move.

The gap that opened

The plan was sound. The timing was not. Alejandro's lease ended on a fixed date, and the landlord was not willing to extend it. Raymond and Alejandro still hadn't agreed on some of the harder terms in the draft agreement — specifically, how Alejandro's money toward the mortgage and an upcoming kitchen renovation would be treated if things didn't work out. Rather than have Alejandro pay for a short-term rental while the details were worked out, they decided he would move in on schedule and they would finish the agreement once things settled. That was the point where the plan quietly came apart.

Over the following eight months, life took over. Alejandro moved in, contributed roughly $1,200 a month toward the mortgage, and put about $40,000 from the sale of his previous condo toward gutting and rebuilding the kitchen. None of it was written down as a loan, a gift, or an investment. It was simply what a couple living together does. The draft agreement sat unfinished.

This is precisely the gap a cohabitation agreement is meant to close, and it matters more than most couples realize. In Ontario, married spouses divide the value built up during the relationship under a process called equalization of net family property, set out in the Family Law Act. Common-law partners — couples who live together but are not married — get no such automatic sharing. If the relationship ends, a partner who paid into a home they don't legally own has to rely on a claim called unjust enrichment: essentially, arguing in court that it would be unfair for the other person to keep a benefit they received without paying for it. Courts can respond to a successful claim by ordering repayment, or in some cases recognizing a constructive trust — a court-imposed share of the property itself, reflecting the value the contributing partner added. That kind of claim is fact-heavy, expensive to litigate, and its outcome is far less predictable than a signed agreement.

What we did

1. Reconstructed the record before drafting anything. Before finishing the agreement, our team had Raymond and Alejandro pull together what documentation existed — bank transfers, the renovation contractor's invoice, and a rough timeline of when the mortgage payments started. Getting the facts fixed in writing mattered more at this stage than the legal language around them.
2. Had a direct conversation about the exposure that already existed. We explained plainly that the eight months of undocumented contributions were not erased by finally signing an agreement — they were a real financial fact that a court could later be asked to weigh, agreement or not. Pretending the gap hadn't happened would have made the agreement weaker, not stronger.
3. Drafted the agreement to address the gap directly, not just the future. Rather than starting the clock from the signing date, the agreement recorded Alejandro's actual contributions to that point — the mortgage payments and the renovation cost — and set out how they would be treated if the relationship ended.
4. Built in a defined reimbursement formula instead of a property share. The agreement kept the home as Raymond's separate property, protecting it for him and for Gabriela, while giving Alejandro a contractual right to have his documented contributions returned, plus modest interest, if the relationship ended. It also set out how future contributions would be tracked, so the same ambiguity would not build up again.
5. Confirmed both partners received independent legal advice. Alejandro reviewed the final agreement with his own lawyer, separate from our office. A cohabitation agreement signed without each partner getting independent advice is far more vulnerable to being challenged later as unfair or not properly understood, so this step was not optional.

The outcome

The agreement was signed roughly eight months after Alejandro moved in — later than planned, but still years before anything went wrong. The relationship lasted another five years before it ended. By then, the St. Catharines home had appreciated substantially, helped along by the very kitchen renovation Alejandro had funded.

Because the agreement addressed the gap period directly, the outcome at separation was straightforward to calculate rather than something to fight over. Alejandro was entitled, under the formula in the agreement, to the return of his roughly $40,000 renovation contribution and the roughly $9,600 in mortgage payments made before signing, plus the interest the agreement specified — a total of about $55,000, paid out when Raymond refinanced the property.

That was a real cost, and it is worth being honest about it: had the agreement been signed before Alejandro moved a single box into the house, none of that $55,000 would necessarily have been owed, since the parties could have simply agreed the home stayed entirely separate from day one with no reimbursement mechanism at all. The eight-month gap created a genuine financial exposure that the final agreement could contain but not erase.

The contrast that mattered was with the alternative. Without any agreement, Alejandro's path to recovering anything would have been an unjust enrichment claim, argued years after the fact, over renovation invoices and bank records that would have been harder to locate and harder to tie to a clear promise. That kind of claim could easily have sought a share of the home's appreciation rather than a repayment of contributions — plausibly a larger number than $55,000 — and it would have taken a contested court process, likely well over a year, to resolve. Instead, the separation was handled through the terms both partners had already agreed to, with a defined number and no litigation. For Raymond, and for Gabriela's stability at home, that was the difference between a manageable outcome and an unpredictable one.

What you can learn from this