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UDR, Inc. faces a class-action lawsuit in San Diego for allegedly using RealPage's YieldStar algorithmic pricing software to unlawfully inflate rental prices based on nonpublic competitor data.
In Keller v. UDR, Inc., plaintiff Jacob Keller alleged that UDR used RealPage pricing tools to set rents or occupancy levels at its San Diego properties after a city prohibition took effect on June 21, 2025. The complaint claims the tools relied on nonpublic competitor data and contributed to inflated rents for UDR tenants. UDR, a large publicly traded apartment owner and operator, had previously acknowledged using YieldStar in decisions concerning certain multifamily units.
Domain classification, causal taxonomy, severity scores, and national security assessments were LLM-classified and may contain errors.
AI-driven concentration of power and resources within certain entities or groups, especially those with access to or ownership of powerful AI systems, leading to inequitable distribution of benefits and increased societal inequality.
Also classified as
The lawsuit highlights concerns from economists and regulators that these algorithmic pricing models can perpetuate social harms and produce biased or discriminatory outcomes in the housing market.
The incident involves corporate landlords using a shared algorithmic pricing tool to centralize pricing power, leading to inflated rents and an unfair distribution of economic benefits at the expense of tenants.
AI system
Due to a decision or action made by an AI system
Intentional
Due to an expected outcome from pursuing a goal
Post-deployment
Occurring after the AI model has been trained and deployed
The financial harm was caused by the deployment of the YieldStar pricing algorithm, which was intentionally used by UDR to set rental rates post-deployment.
A class-action lawsuit in San Diego alleges UDR, Inc. used RealPage's YieldStar algorithmic pricing software to inflate rents using nonpublic competitor data. While raising significant concerns about algorithmic collusion, antitrust violations, and local housing affordability, the incident has minor national security implications, primarily affecting local economic conditions rather than national security.
The report describes UDR using YieldStar as 'one tool among others' to help with its decision-making regarding multifamily units, indicating it acts as an assistant to human decision-makers.
Risk Level 2: High Risk. The system is used in housing administration, which has significant implications for public interest, safety, and fundamental rights regarding housing access and affordability.
The YieldStar software is designed to compile proprietary information and make real-time suggestions on how to price floor plans and units.
The report clearly details the legal allegations, the specific software used (YieldStar), the user (UDR), and provides a concrete estimate of the financial impact ($99/month rent increase).
The pricing tool could be viewed as a standard database or statistical tool rather than an AI system, but the report explicitly refers to it as an 'algorithmic device' and 'AI model'.
Technology
Algorithmic Pricing Software
YieldStar automated real-time rental pricing suggestions.
Risk of Biased AI Outcomes
AI models can produce biased or discriminatory rental outcomes.
Data Inputs
Nonpublic Competitor Data
Software used nonpublic competitor pricing and lease details.
Granular Lease Insights
System captured niche, granular insights to set rental rates.
Human Factors
Reliance on Algorithmic Tool
UDR human operators relied on YieldStar suggestions for pricing.
Process and Methods
Algorithmic Rate Calculation
Process of using algorithms to set rents and occupancy levels.
Management
Decentralized Price Setting
Management adopted YieldStar as a tool for decision-making.
Failure to Halt Use
Management failed to stop using the software after June 2025.
Regulatory Environment
Ordinance Non-Compliance
UDR continued using the software after San Diego banned it.
New Local Legal Restrictions
San Diego passed Code 98.1103 outlawing algorithmic pricing.
AI system involved
Identified by automated extraction; can differ from the alleged developers above.
