Abstract
Real estate portfolio management operates through quarterly review cycles consuming three to five business days per cycle for typical institutional portfolios. While artificial intelligence has demonstrated value in individual asset analysis, the industry lacks systematic frameworks for autonomous portfolio rebalancing where AI agents continuously monitor performance, analyze market conditions, and generate strategic recommendations. This research develops and empirically validates a multi-agent AI architecture for institutional portfolio management through controlled testing with ChatGPT-4 and Gemini using an eighty-million-dollar multifamily portfolio across five Sun Belt markets. The framework achieved ninety-four percent time reduction while generating institutionally-viable rebalancing strategies that synthesized performance analytics, market intelligence, and risk assessment. Testing revealed AI agents independently converged on identical strategic recommendations despite initial analytical disagreements, demonstrating sophisticated conflict resolution capabilities. However, a critical eight-hundred-thousand to one-million-dollar timing trade-off between competing AI recommendations validated the framework's human oversight requirements for final fiduciary decisions. The research contributes a practical six-agent architecture that mirrors institutional investment committee workflows while eliminating systematic biases including sunk cost fallacies.