Competition, comparables and the appraisal
New-unit pricing reaches existing owners through three channels. None is automatic, and each depends on how close the competing inventory is to your unit.
Competition for the same buyer. A buyer weighing a resale two-bedroom against a new unit nearby will compare price, fees, warranty coverage and move-in timing. When developers trim prices or add incentives on completed inventory, the resale listing has to justify its price against that alternative. The closer the new building, the stronger the effect.
Comparable sales. Agents price listings, and buyers judge them, using recent sales of similar units nearby. If discounted new units close in the same neighbourhood, those transactions can pull the range of recent comparables lower.
The lender's appraisal. Appraisals lean on recent, nearby sales and adjust for the direction of the market. As one documented example, the CMHC appraisal checklist for its former First-Time Home Buyer Incentive required comparables no more than six months old in urban areas and a time adjustment when market conditions are rising or declining. That checklist applied to one federal program, and individual lenders set their own requirements, but it illustrates the standard logic: recent sales and current market direction outweigh what an owner paid years ago. For condos, the same checklist also required comments on condo fees, the reserve fund and any special assessments.
The direction of causation is worth stating carefully. Falling developer prices and falling resale prices often move together because both respond to the same forces: rate conditions, investor demand and the volume of completions. A new-unit discount does not mechanically reprice the condo next door. It adds supply at a lower price point, which can set a practical ceiling on what buyers will accept for similar resale units.