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Corroborated Contested Significant

An algorithm allegedly pooled rival landlords' confidential data to generate coordinated rent recommendations, triggering a Competition Bureau investigation.

Occurred: January 1, 2017 (year) to December 3, 2024 Reported: September 4, 2024

Canadian landlords have used RealPage's YieldStar algorithm — a revenue management system that aggregates confidential rental data from competing property managers and generates coordinated rent price recommendations. An investigation by The Breach in November 2024 revealed that at least 13 Canadian companies with $5+ billion in revenue were using the software (The Breach, 2024).

YieldStar collects competitively sensitive data that landlords would not normally share — current and historical rental prices, occupancy rates, signed leases, renewal offers, and future occupancy projections — and runs it through an algorithm that generates rent recommendations. RealPage marketed the software as delivering 3-7% outperformance versus market rates. For 22 John Street in Toronto's Weston neighbourhood, YieldStar recommended annual increases ranging from 7% to 54% (The Breach, 2024). The landlord, Dream Unlimited, implemented increases at the lower end — 9-10% annually — still far exceeding Ontario's 2.5% rent control guideline, under a November 2018 policy that exempted newer units from rent control (The Breach, 2024).

Canada's Competition Bureau opened an investigation in September 2024 (The Breach, 2024). The Bureau subsequently discontinued its investigation in November 2025, finding that revenue management tools were not sufficiently widespread in Canada to substantially harm competition. In December 2024, a proposed class action was filed on behalf of affected tenants, naming RealPage and 14 Canadian landlords including Dream Unlimited, GWL Realty Advisors, CAPREIT, Tricon Residential, and Choice Properties REIT (Financial Post, 2024). Federal Minister François-Philippe Champagne publicly called the situation "completely unacceptable" and urged the Competition Commissioner to act (MPA Magazine, 2024).

RealPage has stated that its software affects less than 1% of the Canadian rental market. Several landlords voluntarily discontinued YieldStar after media scrutiny: GWL Realty Advisors terminated use after an internal review in October 2024, and Dream Unlimited and Tricon Residential followed (CBC News, 2024). In the United States, the DOJ reached a settlement with RealPage in November 2025, effectively banning its core business model of pooling nonpublic landlord data for rent recommendations. The outcome of the US case may influence future Canadian regulatory approaches.

Materialized From

Harms

RealPage's YieldStar algorithm aggregated confidential, competitively sensitive rental data from competing landlords and allegedly generated coordinated rent recommendations, with documented suggestions ranging from 7% to 54% annual increases for a Toronto building — far exceeding Ontario's 2.5% rent control guideline for controlled units. Canadian renters experienced rent increases of 9-10% annually at buildings using the software.

Economic HarmSignificantPopulation

Low-income tenants and renters in non-rent-controlled units faced unaffordable rent increases driven by algorithmic pricing recommendations, with documented cases of tenants working multiple jobs to afford rent at buildings using YieldStar.

Economic HarmSignificantGroup

Evidence

5 reports

  1. Media — The Breach (Sep 4, 2024)

    Competition Bureau investigation and initial reporting on YieldStar use in Canada

  2. Media — The Breach (Sep 4, 2024)

    Dream Unlimited's use of YieldStar with documented 7-54% rent increase recommendations

  3. Media — Financial Post (Dec 1, 2024)

    Class action filed naming 15 defendants including RealPage and Canadian landlords

  4. Media — MPA Magazine (Nov 1, 2024)

    Federal government response and Minister Champagne's call for investigation

  5. Media — CBC News (Nov 1, 2024)

    CBC investigation into YieldStar use by Canadian landlords

Record details

Responses & Outcomes

Competition Bureau CanadainvestigationActive

Opened investigation into Canadian landlords' use of algorithmic rental pricing software for potential price-fixing

Editorial Assessment assessed

An algorithm that pools confidential data from competing landlords to generate coordinated pricing recommendations is the subject of antitrust investigations in both the US and Canada (The Breach, 2024; CBC News, 2024). The US DOJ reached a settlement with RealPage in November 2025, and Canada's Competition Bureau opened its own investigation in September 2024 (The Breach, 2024; MPA Magazine, 2024). RealPage has stated the software affects less than 1% of the Canadian rental market.

Entities Involved

RealPage Inc.
developerdeployer

AI Systems Involved

YieldStar

Revenue management algorithm that ingests confidential data from competing landlords and outputs rent price recommendations, allegedly enabling coordinated rent increases of 7–54% annually

Related Records

Taxonomyassessed

Domain
Retail & Commerce
Harm type
Economic Harm
AI pathway
Deployment Context
Lifecycle phase
Deployment

AIID: Incident #894

Changelog

Changelog
VersionDateChange
v1Mar 8, 2026Initial publication based on AIID cross-reference scan
v2Mar 12, 2026Neutrality/factuality review: removed unsourced 'since at least 2017' claim; corrected The Breach investigation date to November 2024; fixed Competition Bureau date to September 2024; added Bureau discontinuation to FR for EN/FR parity; removed 3 unattributable policy recommendations per CAIM neutrality policy.

Version 2