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ADUs Are an American Tradition <br /> While today's interest in ADUs may be new,the housing type is centuries old <br /> Early settlers often built a small home to live in while converted into rental homes. By becoming landlords, <br /> constructing their larger,primary house nearby. the owners gained income from their often unused <br /> When farming was a source of survival for most of the outbuildings. <br /> nation's households,families routinely constructed Automobile garages have a similar history.Some were <br /> additional homes on their land when needed. originally built with a housing unit upstairs.Over time, <br /> People with wealth and acreage regularly populated many garages were converted (often illegally or under <br /> their lands with secondary mansions and ancillary zoning codes no longer applicable today) into small <br /> buildings independent of the main estate house. homes when the spaces became more valuable for <br /> housing people than vehicles. <br /> In fact,until the 20th century,people who owned land With the rise of suburban single-family home <br /> built as many homes as they wished,often for developments following World War II,ADUs <br /> extended family or workers.There were few or no practically ceased to be built legally in the United <br /> zoning rules, municipal services or infrastructure States.Then as now, residential zoning codes typically <br /> needs (utilities, roads,schools,trash collection, allowed only one home per lot,regardless of the <br /> first-responders) to consider. acreage and with no exceptions.Attached and <br /> A historic precedent for the modern day accessory detached garages occupied yard space that might <br /> dwelling unit is the"carriage house,"or"coach otherwise have been available for ADUs. <br /> house."Originally built for horse-drawn carriages,the Some cities,including Chicago,grandfathered in <br /> structures associated with grander homes were pre-existing"coach house"ADUs—but only if they <br /> frequently large enough to double as living quarters remained consistently occupied. In Houston's historic <br /> for workers such as stable hands. and trendy Heights neighborhood,old and new <br /> Decades later,in response to housing shortages and garage apartments are common and desired. <br /> economic needs, many surviving carriage houses were Many communities don't allow new ADUs,even if they <br /> did in the past. Even in rural areas with ample land, <br /> I This carriage house containing a one-bedroom,one-bath property owners are often prohibited from creating <br /> ADU above a two-car garage sits behind a six-level,Gilded Age, <br /> Hoboken,New Jersey,townhome that was built in 1883.The secondary dwellings or continuing to live in preexisting <br /> dual residence property was on the market in 2018 for$5 million. ones. Countless units in single-family homes or yards <br /> are technically illegal simply because they date from <br /> _' it <br /> ,f , when such units were not allowed. <br /> J ' , 1 ADUs began making a comeback in the 1980s as cities <br /> �',' ,' 'i , . explored ways to support smaller and more affordable <br /> a". -4-' --- housing options within single-dwelling neighborhoods. <br /> . : - , ,N> In 2000,in response to a growing demand for ADU- <br /> supportive guidelines,AARP and the American <br /> Planning Association partnered to release a model <br /> .'' »ice' ' ' ' – --".-'-* state act and local code for ADUs.An updated <br /> `l a' resource was published by AARP in 2021. (See an o <br /> $" I ' image of it on the inside front cover of this guide) <br /> Many state and local governments are legalizing and x <br /> ,,;04,414 encouraging the creation of ADUs (see page 8), m <br /> zi <br /> driven by high housing costs and,in some cases,theT. <br /> belief that homeowners with suitable space shouldn't p <br /> be so restricted in the use of their property. a <br /> r <br />