This document discusses the pros and cons of cross-collateralizing property loans. Cross-collateralization occurs when multiple properties are used as security for a single lending portfolio. While it provides advantages like lower interest rates, cross-collateralization also poses disadvantages for serious property investors, such as lack of flexibility and control over the portfolio. The document analyzes the disadvantages in depth and concludes that while cross-collateralization may be suitable for some, serious long-term investors are generally better off with their loans structured separately without cross-collateralization.