Accessory Dwelling Units
An increasing number of communities around the United States are exploring accessory dwelling units (ADUs) as a potential solution to housing affordability. Learn more about this missing middle housing type.
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In terms of affordability, we tend to think of a dichotomy between single-family detached homes and apartments and townhouses, and people quickly become concerned about increasing density affecting neighborhood character. One way many communities in the United States are increasing density while maintaining a streetscape that is compatible with single-family housing types is to incorporate the concept of “missing middle” housing types.
Missing middle housing can assist in both increasing the number of units built and providing units for a wide variety of price points. This involves allowing a broader diversity of housing types than most ordinances allow today, but that used to be built in many communities historically. Opticos Founder Dan Parolek coined the phrase “missing middle” housing to describe a range of multi-unit or clustered housing types. (See opticosdesign.com and missingmiddlehousing.com for more information).
Because land costs and home size often limit affordability, a classic solution is to aim for greater density and/or smaller lots and/or smaller homes. Missing middle housing examples include:
These and other missing middle housing types provide more units on less land that traditional single-family homes.
Learn what missing middle housing is, missing middle housing types, and how different communities are incorporating them.