What are your opinions regarding accessory dwelling units?

An accessory dwelling unit (ADU) is a smaller, secondary dwelling unit on the same lot or within a house, attached house, or manufactured home.  The unit includes its own independent living facilities with provisions for sleeping, cooking, and sanitation, and is designed for residential occupancy independent of primary dwelling unit.  The unit may have a separate exterior entrance or an entrance to an internal common area accessible to the outside (source: Wikipedia).

ADUs provide many benefits to residents, neighborhoods and property owners.  They allow for additional housing for those desiring to live in Littleton and provide an efficient use of existing infrastructure while avoiding sprawl.  They diversify housing stock while maintaining neighborhood character.  ADUs may provide an option for older residents to stay in their homes and neighborhoods, and gives property owners a means for additional income.

Because of the possible benefits of ADUs, cities may provide incentives for the construction of ADUs.  But to ensure neighborhood character is maintained, cities may adopt standards for the additional housing units.  Please answer the following questions: