Buying a pre-construction home in the GTA can offer substantial appreciation upside, but it carries distinct financial commitments and risks that resale purchases don't. From staged deposits to complex HST treatment of assignment sales, pre-construction requires homework. Here's what you need to know before signing.
How Pre-Construction Works
When you buy a pre-construction home in Ontario, you're purchasing a promise rather than a finished product. You sign an Agreement of Purchase and Sale (APS) with the builder, and construction typically takes 2–5 years before you take possession.
Staged Deposits
The builder requires you to deposit funds in stages before construction completes. A typical total deposit structure is 15–20% of the purchase price, paid over time:
5% on signing the APS
5% at 30 days
5% at 120–180 days
Remainder at 365 days or a builder-defined milestone (e.g., first framing, electrical rough-in)
Balance paid on final closing, when the title transfers
These deposits cannot be financed via mortgage — they must be cash or liquid funds. For a $500,000 pre-construction unit, you might deposit $75,000–$100,000 over the project timeline.
Tarion and Deposit Protection: Under the Condominium Act, all condo builder deposits are held in trust by the builder's lawyer, protecting them if the builder becomes insolvent. For freehold pre-construction purchases, a new rule (effective April 1, 2026) requires you to register with Tarion within 45 days of signing to preserve up to $100,000 in deposit protection. Condo buyers receive a secondary $20,000 Tarion backstop. If the builder fails to return your deposit on time, Tarion steps in.
Interim Occupancy and the Final Closing Period
For condos, after construction finishes, you may take possession of your unit during an interim occupancy period — which can last anywhere from a few months to over a year. During this time, you do not yet own the unit; the title has not transferred. You're occupying it while the developer completes final inspections and the condominium corporation registers.
You pay an occupancy fee to the builder during this period, capped by Ontario law to cover estimated property taxes, estimated common expenses, and interest on the unpaid purchase balance at the Bank of Canada prescribed rate. Once the condo corporation registers and the mortgage funds, you close and take title.
The Costs Beyond the Purchase Price
When you buy pre-construction, the advertised price is only part of the story. Several additional costs are passed through to the buyer.
HST (Harmonized Sales Tax)
Ontario's HST on new homes is 13%. Builders collect this directly in the purchase price. However, two federal and provincial rebate programs can substantially reduce your HST burden:
Federal First-Time Home Buyers' GST/HST Rebate (New in 2025)
If you're a first-time home buyer (did not own a principal residence in the current or preceding four calendar years), you may qualify for up to $50,000 in rebate. The rebate covers 100% of the federal portion of HST paid. It applies to new homes valued up to $1,000,000 (full rebate) and homes $1,000,001–$1,500,000 (partial rebate, phasing to zero at $1.5M). You must apply within two years of taking possession.
Ontario Enhanced New Housing Rebate (2026 Temporary Measure)
Effective for agreements signed between April 1 and April 1, 2027, Ontario is offering an enhanced rebate on the provincial portion of HST — not just for first-time buyers, but for all eligible buyers (primary residence or qualifying rental properties). Combined with the federal program, eligible first-time buyers on condos up to $1,000,000 could recover up to approximately $130,000 in total tax relief. Confirm exact amounts with the builder and a professional accountant, as the combined benefit depends on home value and program stacking.
Development Charges
Municipal development charges (DCs) fund new infrastructure — roads, water, schools, transit. Most pre-construction APSs allow the builder to pass through any increase in development charges from signing to closing. These can be substantial — tens of thousands of dollars in rapidly growing municipalities. Some contracts cap DC pass-throughs; many do not. Review the APS development charge clause carefully with a real estate lawyer before signing. This is a negotiable item.
Occupancy Fees and Closing Adjustments
During the interim occupancy period, you pay occupancy fees (property tax + estimated common expenses + interest). On final closing, utility companies and property tax will be pro-rated — the seller reimburses you for pre-paid amounts, or you reimburse the seller for amounts owing through closing date.
For condos, the Condominium Corporation also assesses common element costs and may levy special assessments for reserve fund contributions or building repairs. Review the status certificate and reserve fund study with your lawyer to anticipate these ongoing costs.
Assignments Explained
An assignment is when you sell your contractual right to purchase the pre-construction home to another buyer before the building closes. Instead of waiting for construction to finish, you "flip" the contract itself.
Who Can Assign?
Not all builders allow assignments. Your APS will state whether assignment is permitted; many builders prohibit it entirely, or allow it only with written consent and an assignment fee (commonly $5,000–$10,000). Always review the assignment clause before signing.
GST/HST Treatment of Assignments (2022 Rule Change)
This is where assignments become tax-complex. Effective for assignment agreements signed on or after May 7, 2022, the federal government amended the Excise Tax Act to make all assignment sales taxable for GST/HST purposes — regardless of whether you're an individual or corporation.
What does this mean? The full assignment sale price — including the deposit you already paid — is subject to HST. So if you bought a $500,000 pre-construction unit for $75,000 down and assigned it six months later for $600,000, the assignee's cost might include HST on the entire transaction. The assignee (not the builder) collects and remits this HST.
CRA Treatment as Business Income
The Canada Revenue Agency may classify your assignment profit as business income rather than a capital gain if they determine you purchased primarily to profit from resale rather than occupy. Business income is fully taxable; capital gains receive the 50% inclusion rate (50% of the gain is taxable). If CRA audits and reclassifies a "flip," your tax bill can double.
Bottom line: Assignments trigger HST and possible business income taxation. Consult a real estate lawyer and accountant before assigning.
Warranty & Buyer Protections
Tarion Warranty
Every new home in Ontario must be registered with Tarion before being offered for sale, and all Ontario home builders must be licensed by the Home Construction Regulatory Authority (HCRA) under the New Home Construction Licensing Act, 2017.
Tarion provides a standard new-home warranty covering:
1 year: Workmanship and materials defects
2 years: Electrical, plumbing, heating systems, building envelope, and Ontario Building Code violations
7 years: Major structural defects
Verify the builder and project are registered at tarion.com before you sign. If the builder fails to honour warranty claims, Tarion steps in.
The 10-Day Cooling-Off Period (Condos)
Under Section 73 of the Condominium Act, 1998, buyers of pre-construction condominium units have a 10-day rescission right (cooling-off period). This period begins on the later of: (a) when you receive the fully signed APS, or (b) when you receive the developer's disclosure statement and Condo Buyers' Guide.
These are calendar days (weekends count). You can cancel for any reason and get your deposit back in full. This protection applies only to pre-construction condos, not resale condos, assignment sales, or freehold homes.
Note: A 10-day cooling-off period for freehold new homes has been legislated but is delayed to 2027 — don't rely on it yet for freehold purchases.
Risks to Watch
Construction Delays and Cancellations
Pre-construction timelines are not guaranteed. Supply-chain disruptions, labour shortages, or unforeseen structural issues can delay completion by months or years. In rare cases, projects have been cancelled entirely. Once you've signed, you can't easily exit without losing deposits or legal costs. Build in extra time before you plan to move.
Financing and Appraisal Risk at Final Closing
You're approved for a mortgage based on today's rate environment and income. At final closing (2–5 years later), the appraised value of the completed unit might not match the purchase price if the market has cooled. If the appraisal comes in low, the lender may reduce the mortgage advance, and you'll need to cover the shortfall in cash — or renegotiate with the builder.
Additionally, if your income drops, credit score declines, or employment changes before closing, lender re-qualification could derail your financing approval at the final moment.
HST Rebate Clawback
Both the federal FTHB rebate and Ontario enhanced rebate require that you occupy the home as your principal residence. If you assign the contract, sell the property within a short window, or purchase as an investment property, you may lose rebate eligibility — and CRA may demand repayment. Don't count on HST savings unless you're genuinely planning to live there.
Market Risk
If the GTA real estate market declines significantly between signing and closing, your pre-construction home could be worth less than you contracted. You're locked into the purchase price. Conversely, if the market appreciates, you win. Pre-construction is a bet on appreciation; it's not risk-free.
Frequently Asked Questions
What happens if the builder goes bankrupt before closing?
Under the Condominium Act, condo deposits are held in trust by the builder's lawyer, protecting them. For freeholds, Tarion covers up to $100,000 if you register within 45 days of signing. Without that registration, you may lose your deposit.
Can I get a mortgage for 30 years on a pre-construction condo?
Yes. First-time home buyers and all buyers of newly built homes (including pre-construction) can qualify for 30-year amortization on insured mortgages, effective December 15, 2024. Standard insured mortgages are capped at 25 years.
What's the difference between an assignment and a resale?
An assignment is selling your contractual right to buy the pre-construction home before it closes; you never take possession. A resale is buying a completed home from the original owner after closing (usually on the MLS®). Assignments are taxable for GST/HST; resale homes are not (unless you're a business flipping homes).
Do I need a home inspection on pre-construction?
Most builders resist inspections during interim occupancy, citing ongoing work. By final closing, you should hire an inspector to verify all defects noted in the builder's punch list have been corrected. Tarion warranty covers defects for 1–7 years after closing.
What's a status certificate, and do I need one for pre-construction condos?
A status certificate is a legal document provided by the Condominium Corporation detailing the building's finances, reserve fund, legal disputes, and your unit's status. For resale condos, it's mandatory. For pre-construction condos, you typically won't receive a status certificate until the corporation is registered (after interim occupancy). Request it before you waive conditions on final closing.
Will my occupancy fee during interim occupancy be high?
Occupancy fees are capped by law: property tax + estimated common expenses + interest at the Bank of Canada prescribed rate. They're usually much lower than final carrying costs because no mortgage is in place yet. The exact amount varies by unit size, municipality, and interest rate — ask the builder for a written estimate specific to your unit.
What if development charges increase by 20% before closing?
If your APS allows the builder to pass through DC increases (most do), you'll owe the difference at closing. Some builders cap DC pass-throughs at 10% or negotiate a freeze. Review and negotiate the DC clause before signing — this can add tens of thousands to your final bill.
The figures, rates, and rules in this article are for informational purposes and reflect rules current as of June 2026. Real estate transactions involve complex legal, tax, and financial considerations specific to your situation. Always confirm details with a licensed mortgage broker, Ontario real estate lawyer, and/or chartered professional accountant (CPA) before making any decisions.
Who Is Inna Gold?
Inna Gold is a REALTOR® and managing broker at RE/MAX Experts in Vaughan, Ontario, with deep expertise in the GTA's pre-construction and resale markets. She combines meticulous legal and financial literacy with genuine client advocacy to guide buyers through complex transactions.
"I pride myself for being knowledgeable and invested in real estate; keeping up with market trends and having my clients' best interests at heart. I master negotiation and never push my clients beyond their comfort levels. Real estate is a true passion of mine. I want to help everyone find their dream home and have the best experience throughout the journey." — Inna Gold, REALTOR®, RE/MAX Experts
Inna Gold, REALTOR® RE/MAX Experts — 277 Cityview Blvd Unit 16, Vaughan, ON L4H 5A4 Cell: 416-500-0696 | Office: 905-499-8800 info@innagold.com | innagold.com
Buyer Resources
Download Inna's Buyer's Guide — Essential reading for GTA homebuyers covering offers, financing, and closing costs.
Condo vs Freehold vs Townhouse — Understand the differences and find which ownership type fits your goals.
Deposit & Closing Costs in the GTA — Break down all the fees, taxes, and expenses you'll encounter at closing.
Search GTA homes for sale — Start your home search on the MLS® today.
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