Developers Are Using NDAs to Move Unsold Inventory, And Buyers Have No Idea What They're Signing Away
A 29-year-old accountant in North York signed a six-page document in a sales office last month. She got $78,000 off a one-bedroom condo. She also got a clause that forbids her from disclosing the sale price to anyone, including her mortgage broker, for two years. She doesn't know if she got a deal or not, because she has no legal way to find out what the unit next door sold for three weeks earlier.
This is the new math of condo inventory management. Developers sitting on unsold units in buildings that are 60% or 70% sold face a problem: they need liquidity now, but they can't afford to drop the sticker price publicly. A $680,000 unit discounted to $602,000 on MLS or HouseSigma doesn't just hurt that one sale. It resets the comparable-sales data for the entire building, which means the bank appraising Unit 1407 for someone who bought at $680,000 six months ago now has a $602,000 comp on record. That appraisal comes in low. The buyer can't close. The deal collapses, and the developer is left holding not one unit but two.
The Private Discount Market
The NDA solves this by moving the transaction off the public record entirely. The buyer signs, gets the discount, closes quietly. The developer moves the unit, gets the cash, and the building's "market price" on paper stays intact. It's not illegal. It's not even uncommon anymore. Developers in the Greater Toronto Area have been using this structure with increasing frequency since late 2023, when condo inventory in the region hit a ten-year high and carrying costs began eating into already-thin margins.
The risk sits entirely with the buyer. Without access to comparable sales data, the buyer has no way to know if the "discount" they received was 11% off market or 3% off an inflated list price. More concretely, when they go to sell or refinance in three or five years, they cannot use their own purchase price as a data point in negotiations. The NDA typically survives the closing, which means even after you own the unit, you're contractually barred from disclosing what you paid. Your real estate lawyer can't use it. Your appraiser can't reference it. You're holding an asset with no transparent price history.
The Appraisal Problem No One Mentions
Here's the structural issue. Appraisals rely on recent comparable sales within the same building or immediate area. If 40% of the transactions in a building over an 18-month period are NDA-bound and therefore invisible to appraisers, the appraisal is being done with incomplete data. The buyer who paid $680,000 and the buyer who paid $602,000 under NDA both live in the same building, but only one sale is visible to the next appraiser. The market price, as recorded, is fiction.
This creates a secondary problem when the first wave of NDA buyers tries to exit. If comparable sales data shows the building trading at $680,000 but private NDA transactions were happening at $602,000, what's the unit actually worth? The buyer who signed the NDA doesn't know, and more importantly, the next buyer's lender doesn't know. Financing becomes harder to secure because the price history is opaque.
What You're Actually Signing
The NDA typically includes a non-disclosure period of 18 to 36 months, a liquidated damages clause if you breach it, and language that extends the confidentiality obligation beyond closing. Some versions include carve-outs for your lawyer and accountant. Most don't include one for your mortgage broker, which is a problem if you're trying to refinance and need to justify your equity position.
Developers will tell you this protects both parties. It protects one party. The developer gets liquidity without triggering appraisal contagion. The buyer gets a discount they can't verify and can't use. That's not a market. That's a private sale with all the risk on one side.
The smarter play, if you're being offered an NDA discount: ask what the average sale price in the building has been over the last six months, get it in writing, and if they won't provide it, don't sign.
