Adjustable-rate mortgages, or ARMs, will shape investor opportunities from 2025 to 2029 by offering lower initial debt costs compared to fixed rates but with higher risk if rates rise later. Investors should use ARMs only when planning very near-term exit or refinance strategies to avoid payment shocks. Fixed-rate financing remains preferable for long holds, providing predictable costs. Being strategic with ARMs allows investors to optimize cash flow while managing interest rate risks in a higher-rate environment.