Selling in Ottawa
Life changes faster than construction schedules. If you've signed with a builder and need out before closing, an assignment sale — selling your purchase contract rather than the home — may be possible. It runs through the builder's consent, careful tax treatment, and paperwork that punishes improvisation. If you need to assign my contract before closing, this is what a preconstruction assignment involves — and why flipping a new build is taxed differently from selling a home.
Between signing a new-build agreement and getting keys can be a year or more — long enough for jobs to move, families to change and rates to shift. An assignment is the exit built for that gap: you sell your contract with the builder to a new buyer (the assignee), who steps into your shoes, completes the purchase, and takes the home at closing. You were never the owner; you sold your place in line. Done properly it's a legitimate, common transaction. Done casually it collides with the builder's contract and the tax system at the same time.
Everything starts with what your builder's contract says about assignment. Nearly all Ottawa builder agreements restrict it: assignment typically requires the builder's written consent, often involves an assignment fee plus the builder's legal costs, and frequently comes with marketing restrictions — many builders prohibit listing an assignment publicly (including on MLS) while they're still selling competing units in the same community. Some agreements bar assignment outright until a stage of construction or sales is reached. Violating these clauses can put your deposits and the deal itself at risk, so this is a read-it-with-your-lawyer moment, not a skim.
Two tax realities dominate modern assignment sales in Canada. First, HST applies to assignment sales of new homes: since 2022, assignments of newly constructed or substantially renovated residential property are taxable supplies for GST/HST purposes, which affects how the assignment price is structured and what the assignee actually pays. Second, profit on an assignment is generally not a capital gain: flipping rules and CRA's long-standing position mean assignment profits are typically taxed as fully taxable income, and quick residential dispositions face specific anti-flipping treatment. The details depend on your facts, intent and timing — which is precisely why an accountant belongs in this transaction before you price it, not at filing time.
An assignment is a real exit, not a loophole — a three-party transaction where the builder holds consent, the CRA holds the tax rules, and you hold a contract worth what today's market says it's worth. Respect all three and it works. The sellers who get hurt are the ones who priced the exit before reading the contract.
Two things blindside new-build buyers. Taking over someone else's purchase agreement is a different transaction from buying from a builder, and since May 2022 every assignment sale of new housing is taxable for GST/HST. And on closing day, adjustments and extras get added to a price you thought was fixed. What to establish before signing either.
Buying preconstruction is a different transaction from buying resale: the builder agreement is the builder's own paper, the home doesn't exist yet, and the timeline is measured in seasons. New vs resale, and the whole journey in the buyer's order.
The sale price is not what you walk away with. Commission and the HST on it, lawyer fees, mortgage discharge or a mortgage penalty, preparing your house for sale, moving and overlap all come off the top. Here is how to work out your net proceeds before you list — and which line regularly shocks sellers.
Most Canadians selling the home they live in owe no capital gains tax on the gain — but the exemption has conditions, reporting the sale is required even at zero tax, and rentals, flips and non-resident sellers change the picture entirely.
