Detached Accessory Dwelling Units
![Granny Flat](/files/styles/small_400/public/images/47094325894_f84a26e81e_c.jpg.webp?itok=FRyrLHb3)
What Are Accessory Dwelling Units?
Sometimes referred to as mother-in-law units or granny flats, Accessory Dwelling Units are a hallmark of contemporary planning as jurisdictions of all sizes and histories legalize the construction of these supplementary residential units.
![Accessory Dwelling Unit](/files/styles/small_400/public/images/adu42637487460_f8a107d928_o.jpg.webp?itok=RCZf2GJx)
Seattle Companies Want to Drive Down Prohibitive ADU Costs
Legal barriers to accessory dwelling units may be disappearing in some places, but costs can still be prohibitive. Several companies are stepping forward with more affordable options.
Placer County
City of Morganton
HUD's Office of Policy Development and Research
Dongguan Binhaiwan Bay Area Management Committee
City of Waukesha, WI
Los Angeles County Metropolitan Transportation Authority
Indiana Borough
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