When evaluating homes for sale in Mobile, AL, it is important to consider both extrinsic characteristics that cannot be changed, like the property's surroundings, and intrinsic characteristics that can be adapted. Extrinsic characteristics to examine include environmental factors like air and electromagnetic pollution, nearby amenities, and views. Intrinsic characteristics refer to a home's formal and technical aspects that may be customized. Choosing a home involves balancing these fixed and flexible characteristics to suit one's needs.